Themed collection FOCUS: Perovskite Materials and Devices

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Does it mix? Insights and attempts to predict the formability of single phase mixed A-cation lead iodide perovskites

Current data suggest that radii and N–H bonds control the solubility and phase segregation in mixed A-cation lead iodide perovskites.

Graphical abstract: Does it mix? Insights and attempts to predict the formability of single phase mixed A-cation lead iodide perovskites
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Surface engineering in CsPbX3 quantum dots: from materials to solar cells

Summarized CsPbX3 QD surface engineering strategies to achieve high-efficiency and high-stability PQD solar cells.

Graphical abstract: Surface engineering in CsPbX3 quantum dots: from materials to solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Perovskite and layered perovskite oxynitrides for efficient sunlight-driven artificial synthesis

Perovskite and layered perovskite oxynitrides are regarded as promising visible-light-responsive semiconductors for efficient artificial photosynthesis to produce renewable value-added energy resources, including H2, formic acid, and ammonia.

Graphical abstract: Perovskite and layered perovskite oxynitrides for efficient sunlight-driven artificial synthesis
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Reinforcing built-in electric field to enable efficient carrier extraction for high-performance perovskite solar cells

This review presents an overview of the carrier separation and extraction mechanism influenced by the built-in electric field (BEF) in PSCs and various strategies used to enhance the BEF.

Graphical abstract: Reinforcing built-in electric field to enable efficient carrier extraction for high-performance perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Applications of multifunctional metal–organic frameworks in perovskite photovoltaics: roles, advantages and prospects

Recent progress of applications of multifunctional MOFs in achieving efficient, durable and eco-friendly perovskite photovoltaics is systematically reviewed, and the profound prospects of MOFs inadvancing development of optoelectronics are outlined.

Graphical abstract: Applications of multifunctional metal–organic frameworks in perovskite photovoltaics: roles, advantages and prospects
From the themed collection: FOCUS: Perovskite Materials and Devices
Open Access Review Article

Self-assembled molecules as selective contacts for efficient and stable perovskite solar cells

In this review, we summarize the recent advances about self-assembled molecules (SAMs) applied as selective hole or electron contacts for perovskite solar cells.

Graphical abstract: Self-assembled molecules as selective contacts for efficient and stable perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Defect passivation engineering of wide-bandgap perovskites for high-performance solar cells

This article provides a comprehensive review of the strategies for passivating defects in wide-bandgap perovskite solar cells.

Graphical abstract: Defect passivation engineering of wide-bandgap perovskites for high-performance solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Interaction mechanism between water molecules and perovskites

By discussing the interactions between water and perovskites, this review offers both a theoretical foundation and practical guidance for enhancing the stability and optoelectronic performance of perovskite photovoltaic devices.

Graphical abstract: Interaction mechanism between water molecules and perovskites
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Towards scalability: progress in metal oxide charge transport layers for large-area perovskite solar cells

In this review article, we aim to offer a focused overview of metal oxide CTLs for large-area PSCs, emphasizing recent advancements in deposition techniques, modification strategies, and their suitability for large-area device applications.

Graphical abstract: Towards scalability: progress in metal oxide charge transport layers for large-area perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Open Access Review Article

Transition metal ion-doped cesium lead halide perovskite nanocrystals: doping strategies and luminescence design

We herein briefly review the recent advances in transition metal ion-doped cesium lead halide perovskite nanocrystals including the typical strategies for effective doping and optical properties manipulation.

Graphical abstract: Transition metal ion-doped cesium lead halide perovskite nanocrystals: doping strategies and luminescence design
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

The role of organic spacers in 2D/3D hybrid perovskite solar cells

This review highlights the crucial role of organic spacers in the fabrication process and formation mechanism of different types of 2D/3D perovskites for PSCs including the bulk incorporation model, surface treatment model, and the coexisting model.

Graphical abstract: The role of organic spacers in 2D/3D hybrid perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Recent progress of two-dimensional Ruddlesden–Popper perovskites in solar cells

This review mainly focuses on the research progress, performance improvement methods, surface passivation application, and limitations of 2D RP PSCs with several typical spacer cations, their challenges and outlook also are briefly described.

Graphical abstract: Recent progress of two-dimensional Ruddlesden–Popper perovskites in solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Recent advances in electrode interface modifications in perovskite solar cells

Advances in electrode interface modifications in perovskite solar cells are briefly reviewed for achieving efficient and stable solar energy conversion.

Graphical abstract: Recent advances in electrode interface modifications in perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Fabrication strategies for high quality halide perovskite films in solar cells

Fabrication strategies for high quality halide perovskite films in solar cells are reviewed from the aspects of intermediate engineering, reaction-controlled, additive-controlled, and mass-controlled crystal growth.

Graphical abstract: Fabrication strategies for high quality halide perovskite films in solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Organic–inorganic hybrid perovskite materials and their application in transistors

Hybrid organic–inorganic perovskites (HOIPs) are emerging materials for versatile electronics. This review focuses on the HOIP-based field-effect transistor (FET) and the potential applications of HOIPs in functional FETs.

Graphical abstract: Organic–inorganic hybrid perovskite materials and their application in transistors
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Recent progress in metal halide perovskite photocatalysts for hydrogen evolution

The basic design principles and recent progress in halide perovskite-based photocatalysts are summarized, aiming to achieve efficient and stable photocatalytic hydrogen production.

Graphical abstract: Recent progress in metal halide perovskite photocatalysts for hydrogen evolution
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Regulation engineering of the surface and structure of perovskite-based electrocatalysts for the oxygen evolution reaction

Perovskite oxides of low cost and with an adjustable structure have been widely used as electrocatalysts for the oxygen evolution reaction (OER).

Graphical abstract: Regulation engineering of the surface and structure of perovskite-based electrocatalysts for the oxygen evolution reaction
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Towards cost-efficient and stable perovskite solar cells and modules: utilization of self-assembled monolayers

Self-assembled monolayers (SAMs) are wonderful interfacial modification materials for adjusting the energy level and passivating the defects.

Graphical abstract: Towards cost-efficient and stable perovskite solar cells and modules: utilization of self-assembled monolayers
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Halide perovskite photovoltaic-electrocatalysis for solar fuel generation

This review covers the principles and recent advances in photovoltaic-electrochemical fuel production. It suggests the structural, compositional, and interfacial engineering of OER, HER, bifunctional, CRR catalysts, and halide perovskite solar cells.

Graphical abstract: Halide perovskite photovoltaic-electrocatalysis for solar fuel generation
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Magic guanidinium cations in perovskite solar cells: from bulk to interface

This review introduces the elementary properties of the GA-based perovskite and summarizes the development history of utilizing guanidinium materials in PSCs, along with proposing a perspective of future opportunities and challenges.

Graphical abstract: Magic guanidinium cations in perovskite solar cells: from bulk to interface
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Solvent-free synthetic protocols for halide perovskites

We discuss new opportunities in solvent-free synthesis of halide perovskites, including vapor deposition and mechanochemical methods.

Graphical abstract: Solvent-free synthetic protocols for halide perovskites
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Light outcoupling strategies in oriented perovskite light-emitting-diodes: recent trends, opportunities, and challenges toward innovation

The engineering of the refractive index, transition dipole moments, the integration of photonic structures, and the photon-recycling process are the representative strategies to improve the outcoupling in perovskite light-emitting diodes (PeLEDs).

Graphical abstract: Light outcoupling strategies in oriented perovskite light-emitting-diodes: recent trends, opportunities, and challenges toward innovation
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Stability improvements of metal halide perovskite nanocrystals and their optoelectrical applications

This review provides a current progress survey on the fundamental properties, stability problems, stability enhancing strategies, and applications of metal halide perovskite nanocrystals.

Graphical abstract: Stability improvements of metal halide perovskite nanocrystals and their optoelectrical applications
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Issues of phase segregation in wide-bandgap perovskites

This review summarizes the recent research progress in phase segregation and instability in wide bandgap perovskites, and strategies are discussed and proposed to facilitate the development of their performance and stability.

Graphical abstract: Issues of phase segregation in wide-bandgap perovskites
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

Phthalocyanine in perovskite solar cells: a review

This review critically analyses the chemical design and functionality of phthalocyanines in perovskite solar cells, which are generally applied in the perovskite layer, as the hole transport layer, or as an interlayer.

Graphical abstract: Phthalocyanine in perovskite solar cells: a review
From the themed collection: FOCUS: Perovskite Materials and Devices
Review Article

The nonhalides in perovskite solar cells

This review summarizes the current research progress of SCN, HCCO, Ac, BF4, BH4, and PF6 as emerging nonhalide anions to realize high structurally stable perovskites and related solar cells.

Graphical abstract: The nonhalides in perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Reversible “on–off” conversion and ultra-high temperature sensitivity of a zero-dimensional lead-free Cs2InBr5(H2O):Sb3+ perovskite

We observed that the water molecule in the Cs2InBr5(H2O):Sb3+ molecular structure acts as a switch, facilitating an “on–off–on” cycle that can be repeated multiple times, overcoming the limitations of materials that exhibit singular responses.

Graphical abstract: Reversible “on–off” conversion and ultra-high temperature sensitivity of a zero-dimensional lead-free Cs2InBr5(H2O):Sb3+ perovskite
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Temperature-tunable multiple dielectric switch in hybrid rare-earth perovskites regulated by hierarchical guest dynamics, lanthanide contraction and doping

Here we report a unique class of cage-like hybrid rare-earth perovskites, (i-PrNHMe2)2[RbLn(NO3)6] (Ln = La, Ce, Nd or Sm), capable of functioning as temperature-responsive multiple dielectric switches.

Graphical abstract: Temperature-tunable multiple dielectric switch in hybrid rare-earth perovskites regulated by hierarchical guest dynamics, lanthanide contraction and doping
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

A lead-free zero-dimensional hybrid antimony halide perovskite X-ray scintillator with exceptional emission efficiency and excellent stability as a highly sensitive fluorescent probe

A zero-dimensional perovskite [FPPP]2SbCl7 with 99.26% PLQY is an efficient X-ray scintillator (46 927 photons per MeV) with a low detection limit and a PL probe for nitrobenzene.

Graphical abstract: A lead-free zero-dimensional hybrid antimony halide perovskite X-ray scintillator with exceptional emission efficiency and excellent stability as a highly sensitive fluorescent probe
Research Article

Discovery of Rb-based auric–aurous halide perovskites as promising narrow bandgap semiconductors for energy conversion applications

Inorganic gold halide perovskites, owing to their excellent stability and tunable bandgaps, are poised to serve as environmentally benign alternatives to lead halide perovskites in the field of energy conversion applications.

Graphical abstract: Discovery of Rb-based auric–aurous halide perovskites as promising narrow bandgap semiconductors for energy conversion applications
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Inorganic Cu2ZnSnS4 hole transport layer for perovskite light-emitting diodes

Optimal surface state regulation of CZTS can effectively passivate defects and minimize its direct contact with FAPbBr3, which is significant for the enhancement of the performance of CZTS-based PeLEDs.

Graphical abstract: Inorganic Cu2ZnSnS4 hole transport layer for perovskite light-emitting diodes
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Guarding the heterogeneous interface of perovskite solar cells by the anion-barrier synthesized using residual PbI2

Multi-effect optimization of the heterogeneous interface is realized by inserting the in situ synthesized anion-barrier, simultaneously improving the device efficiency and stability.

Graphical abstract: Guarding the heterogeneous interface of perovskite solar cells by the anion-barrier synthesized using residual PbI2
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

High performance inverted planar perovskite solar cells enhanced by heteroatomic functionalized hole transport materials

Two heteroatomic functionalized hole transport materials with the rhodanine group have been developed, and the PSC devices with a high-quality perovskite layer and excellent interfacial contacts are fabricated, resulting in a champion PCE of 21.5%.

Graphical abstract: High performance inverted planar perovskite solar cells enhanced by heteroatomic functionalized hole transport materials
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Switchable coordination bonds in 3D cyano-bridged perovskite ferroelastics: achieving the largest leap of symmetry breaking and enhanced dielectric switching performance

Serial 3D cyano-bridged perovskite ferroelastics are designed by H/F substitution. Notably, the C–F–M coordination bond of them achieves enhancing Tc, resulting in the largest leap of symmetry breaking, and enhancing switchable dielectric response.

Graphical abstract: Switchable coordination bonds in 3D cyano-bridged perovskite ferroelastics: achieving the largest leap of symmetry breaking and enhanced dielectric switching performance
Research Article

A polar two-dimensional lead-free hybrid perovskite for self-powered polarization-sensitive photodetection

The first polar 2D lead-free hybrid perovskite (4BrPEA)3BiI6 was synthesized by reducing the occupancy rate of Bi3+ ions, and the self-powered polarization-sensitive photodetector achieved a large photocurrent anisotropy factor of 2.16.

Graphical abstract: A polar two-dimensional lead-free hybrid perovskite for self-powered polarization-sensitive photodetection
Research Article

Multicolor and multimodal luminescence in an Er3+ single-doped double perovskite for advanced anti-counterfeiting and encryption

The Er3+ single-doped NaGdTi1.8Al0.2O6 double perovskite material achieves multicolor luminescence, afterglow, and upconversion emission by responding to several types of excitation ranging from UV to NIR and thermal disturbance.

Graphical abstract: Multicolor and multimodal luminescence in an Er3+ single-doped double perovskite for advanced anti-counterfeiting and encryption
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Chiral defect-induced blue photoluminescence and circularly polarized luminescence of zero-dimensional Cs4PbBr6 perovskite nanocrystals

Chiral-defect-induced strategy is employed to synthesize zero-dimensional chiral Cs4PbBr6 perovskite nanocrystals (NCs) with blue photoluminescence and CPL response via a phase transition process.

Graphical abstract: Chiral defect-induced blue photoluminescence and circularly polarized luminescence of zero-dimensional Cs4PbBr6 perovskite nanocrystals
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Reducing hot carrier cooling rate in metal halide perovskites through lead vacancies: time-domain ab initio analysis

Pb vacancies slow down hot carrier cooling dynamics in MAPbI3 perovskites by introducing intraband states that can trap holes and by decreasing the deformation of the [PbI6]4− octahedron, which leads to weakened electron–phonon coupling.

Graphical abstract: Reducing hot carrier cooling rate in metal halide perovskites through lead vacancies: time-domain ab initio analysis
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Enhancing persistent radioluminescence in perovskite scintillators through trap defect modulation

High-efficiency persistent radioluminescence at room temperature was achieved by modulating the depth and density distribution of trap defects through codoping with Mn2+ and Sb3+ in CsCdCl3 scintillators.

Graphical abstract: Enhancing persistent radioluminescence in perovskite scintillators through trap defect modulation
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Self-assembled manganese acetate@tin dioxide colloidal quantum dots as an electron-transport layer for efficient and stable perovskite solar cells

Self-assembled manganese acetate@tin dioxide colloidal quantum dots are synthesized and utilized as an electron-transport layer for efficient and ambient-air-stable PSCs.

Graphical abstract: Self-assembled manganese acetate@tin dioxide colloidal quantum dots as an electron-transport layer for efficient and stable perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Achieving high-sensitivity dual-mode optical thermometry via phonon-assisted cross-relaxation in a double-perovskite structured up-conversion phosphor

By adjusting the phonon energy of the host crystal (Ca2+/Sr2+/Ba2+) LaLiTeO6:Yb3+, Tm3+ phosphor, combined with the cross-relaxation phenomenon, a high-sensitivity thermometer for dual-mode temperature measurement was constructed.

Graphical abstract: Achieving high-sensitivity dual-mode optical thermometry via phonon-assisted cross-relaxation in a double-perovskite structured up-conversion phosphor
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Synthesis and characterization of a CsPbCl3 perovskite doped with Nd3+: structural, optical, and energy transfer properties

The levels of Nd3+ in CsPbCl3 lie below the top of the host's VB. Consequently, Nd3+ luminescence is not observed.

Graphical abstract: Synthesis and characterization of a CsPbCl3 perovskite doped with Nd3+: structural, optical, and energy transfer properties
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Adhesion, stability, structural and electronic properties of perovskite/BaWO4 heterostructures: first-principles and experimental characterizations

The interfacial behavior and mechanism of the CsPbBr3/BaWO4 and MAPbBr3/BaWO4 heterostructures have been extensively investigated by a combined first-principles and experimental analysis.

Graphical abstract: Adhesion, stability, structural and electronic properties of perovskite/BaWO4 heterostructures: first-principles and experimental characterizations
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Simultaneously excited downshifting/upconversion luminescence from lanthanide-doped core–shell lead-free perovskite nanocrystals for encryption and data storage

The constructed Cs2AgInCl6-based core–shell NCs with separated optically active centers can not only prevent the adverse energy interactions between dopants, but also achieve dual-modal PL in the visible region and improved photostability.

Graphical abstract: Simultaneously excited downshifting/upconversion luminescence from lanthanide-doped core–shell lead-free perovskite nanocrystals for encryption and data storage
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Competition mechanism of self-trapped excitons and Te4+ ions emission in the Te4+ doped vacancy-ordered double perovskite Rb2HfCl6 and its excellent properties

The luminescence mechanism of Te4+-doped VODPs is reported. Te4+-doped Hf-based VODPs exhibit luminescence characteristics that are more in line with those of Te4+ ions, while Te4+-doped Sn- and Zr-based VODPs have STEs emission characteristics.

Graphical abstract: Competition mechanism of self-trapped excitons and Te4+ ions emission in the Te4+ doped vacancy-ordered double perovskite Rb2HfCl6 and its excellent properties
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Durable dielectric switching and photo-responsivity in a Dion–Jacobson hybrid perovskite semiconductor

D–J phase perovskite (BDA)MA2Pb3Br10 reveals excellent photo-responsivity antifatigue merits and remarkable switching stability.

Graphical abstract: Durable dielectric switching and photo-responsivity in a Dion–Jacobson hybrid perovskite semiconductor
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Perovskite photoinitiated RAFT-mediated polymerization-induced self-assembly for organic–inorganic hybrid nanomaterials

An efficient strategy is proposed to construct PQD/polymer organic–inorganic nanohybrids by PET-RAFT polymerization-mediated PISA and the nanohybrid assemblies can maintain excellent luminescence originating from PQDs with enhanced stability.

Graphical abstract: Perovskite photoinitiated RAFT-mediated polymerization-induced self-assembly for organic–inorganic hybrid nanomaterials
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Achieving a near-unity photoluminescence quantum yield and high stability of CsPbI3 nanoplatelets by hydroiodic acid-assisted ligand treatment

We demonstrate a near-unity photoluminescence quantum yield and high stability of CsPbI3 nanoplatelets achieved through a hydroiodic acid-assisted ligand treatment strategy, showcasing their application in perovskite LEDs.

Graphical abstract: Achieving a near-unity photoluminescence quantum yield and high stability of CsPbI3 nanoplatelets by hydroiodic acid-assisted ligand treatment
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

X-ray-activated ultra-long UVA persistent luminescence from a Bi-doped perovskite LaGaO3 for photodynamic activation

X-ray-activated LaGaO3:Sb,Bi, engineered with a generic design utilizing intrinsic oxygen-defect perovskite as the host material, demonstrates robust UV persistent luminescence lasting over 2000 hours.

Graphical abstract: X-ray-activated ultra-long UVA persistent luminescence from a Bi-doped perovskite LaGaO3 for photodynamic activation
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Efficient quasi-2D tin perovskite solar cells based on mixed monoammonium and diammonium terminal molecules

The use of a diammonium ligand, p-Xylylenediammonium thiocyanate, enhances the carrier transfer and improves device efficiency.

Graphical abstract: Efficient quasi-2D tin perovskite solar cells based on mixed monoammonium and diammonium terminal molecules
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Solvent-free synthesis of stable heterostructured-CsPbBr3/Cs2PbBr5 assisted by SiO2 for white light-emitting diodes

We developed a facile synthesis for preparation of stable CsPbBr3/Cs2PbBr5 heterostructures at room temperature, which could be used to scale up production of perovskite phosphors without compromising their performance. This process used SiO2 nanospheres to avoid using hazardous organic solvents.

Graphical abstract: Solvent-free synthesis of stable heterostructured-CsPbBr3/Cs2PbBr5 assisted by SiO2 for white light-emitting diodes
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Antisolvent solubilization achieves simultaneous passivation of shallow and deep defects in perovskite solar cells

An antisolvent solubilization (AS) approach has been developed to enhance the solubilization of the bulk organic ammonium salt and passivated both shallow and deep defects of perovskites, which increased the PCE and stability of PSCs.

Graphical abstract: Antisolvent solubilization achieves simultaneous passivation of shallow and deep defects in perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

H/F substitution activating tunable dimensions and dielectric–optical properties in organic lead-bromide hybrids

H/F substitution has been successfully applied to achieve structural dimension tailoring at the molecular level coupled with tunable dielectric and optical properties in organic lead-bromide hybrids.

Graphical abstract: H/F substitution activating tunable dimensions and dielectric–optical properties in organic lead-bromide hybrids
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Manipulating the crystallization and interfacial charge behavior with a jellyfish-like molecular template for efficient perovskite solar cells

A jellyfish-like molecular template was constructed using MoS2 and glycine to obtain highly oriented perovskite films to enhance interfacial charge transfer in perovskite solar cells.

Graphical abstract: Manipulating the crystallization and interfacial charge behavior with a jellyfish-like molecular template for efficient perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

High-pressure observation of elusive iodoplumbic acid in different hydronium-hydrate solid forms

High-energy conditions stabilize iodoplumbic acid in the form of hydronium acid hydrates. The high-pressure reaction of PbI2 and aqueous concentrated hydriodic acid led to two types of hydrated acids and revealed a new polymorph of lead(II) iodide.

Graphical abstract: High-pressure observation of elusive iodoplumbic acid in different hydronium-hydrate solid forms
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Regulating the microscopic structure of solutions to synthesize centimeter-sized low-dimensional CsmSbnClm+3n perovskite single crystals for visible-blind ultraviolet photodetectors

Centimeter-sized CsmSbnClm+3n single crystals were prepared by using DMSO and hydrochloric acid. The α-Cs3Sb2Cl9 photodetector exhibits excellent wavelength selectivity and fast response speed, demonstrating its great potential in UV applications.

Graphical abstract: Regulating the microscopic structure of solutions to synthesize centimeter-sized low-dimensional CsmSbnClm+3n perovskite single crystals for visible-blind ultraviolet photodetectors
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Enhancing broadband blue luminescence efficiency and stability in Bi3+-doped Cs2ZnCl4 nanocrystals from STEs and advancing energy applications

Lead-halide perovskites exhibit excellent photovoltaic properties.

Graphical abstract: Enhancing broadband blue luminescence efficiency and stability in Bi3+-doped Cs2ZnCl4 nanocrystals from STEs and advancing energy applications
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Excitation-dependent efficient photoluminescence in an organic–inorganic (C4H12N)2HfCl6 perovskite induced by antimony doping

Organic–inorganic lead (Pb)-free halide perovskites exhibit considerable potential as photoluminescence materials because of outstanding photophysical properties.

Graphical abstract: Excitation-dependent efficient photoluminescence in an organic–inorganic (C4H12N)2HfCl6 perovskite induced by antimony doping
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Zero-dimensional mixed-cation hybrid lead halides with broadband emissions

The synthesis and study of three novel compounds comprising Cs+ and metylhydrazinium cations show that mixing of cations is a promising way to develop novel 0D lead halides exhibiting broadband emission.

Graphical abstract: Zero-dimensional mixed-cation hybrid lead halides with broadband emissions
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Efficient triplet energy transfer in a 0D metal halide hybrid with long persistence room temperature phosphorescence for time-resolved anti-counterfeiting

Due to strong overlap between the triplet emission of DPTA and 1S03Px absorption of Sb3+, efficient triplet energy transfer occurs between DPTA and Sb and the afterglow persistence time of DIC:x% Sb can be easily tailored through Sb3+ doping.

Graphical abstract: Efficient triplet energy transfer in a 0D metal halide hybrid with long persistence room temperature phosphorescence for time-resolved anti-counterfeiting
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Multifunctional dielectric/optical response with broadband white light emission in a hybrid stannic halide crystal

This study investigates dielectric switching response equipped with broadband white-light emission in a single hybrid material (3-methoxypropylamine)2SnCl6.

Graphical abstract: Multifunctional dielectric/optical response with broadband white light emission in a hybrid stannic halide crystal
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Developing a gradient titanium dioxide/amorphous tantalum nitride electron transporting layer for efficient and stable perovskite solar cells

A gradient TiO2/a-TaNx electron transport layer was developed for perovskite solar cells. Insights into the relation between the surface elements, charge transfer dynamics, and crystallization of the perovskite have been elucidated in detail.

Graphical abstract: Developing a gradient titanium dioxide/amorphous tantalum nitride electron transporting layer for efficient and stable perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Enhanced performance of perovskite solar cells via a bilateral electron-donating passivator as a molecule bridge

Benefiting from the successful introduction of 6-amino-1-hexanol (HAL), the HAL-modified perovskite solar cell achieves an optimal efficiency of 23.58%.

Graphical abstract: Enhanced performance of perovskite solar cells via a bilateral electron-donating passivator as a molecule bridge
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

An interdiffusion-controlled nucleation strategy for efficient sequential deposition of perovskite photovoltaics

A new interdiffusion-controlled nucleation (ICN) strategy is presented, which introduces sulfamic acid agents to improve the sequential deposition of perovskite crystals, achieving low defect density and high-quality perovskite films.

Graphical abstract: An interdiffusion-controlled nucleation strategy for efficient sequential deposition of perovskite photovoltaics
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Engineering the oxygen-evolution activity by changing the A-site rare-earth elements in RSr3Fe1.5Co1.5O10−δ (R = La, Nd, Pr) Ruddlesden–Popper perovskites

By tuning the A-sites of RP-type perovskites to correlate their structure and physical properties with OER activities, we highlight the importance of tuning A-site elements for improving OER activities.

Graphical abstract: Engineering the oxygen-evolution activity by changing the A-site rare-earth elements in RSr3Fe1.5Co1.5O10−δ (R = La, Nd, Pr) Ruddlesden–Popper perovskites
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Stapled ligand for synthesis of highly emissive and stable CsPbBr3 perovskite nanocrystals in polar organic solvent

A perfluoroglutaric acid stapled ligand for synthesis of highly emissive CsPbBr3 perovskite nanocrystals in polar organic solvent.

Graphical abstract: Stapled ligand for synthesis of highly emissive and stable CsPbBr3 perovskite nanocrystals in polar organic solvent
From the themed collection: FOCUS: Perovskite Materials and Devices
Open Access Research Article

Small molecule dopant-free dual hole transporting material for conventional and inverted perovskite solar cells

Small molecule dopant-free HTL with the ability to self-assemble shows a dual performance that leads to very similar efficiencies in p–i–n and n–i–p perovskite solar cells.

Graphical abstract: Small molecule dopant-free dual hole transporting material for conventional and inverted perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Engineering the intermediate adduct phase to control the crystallization of perovskites for efficient and stable perovskite solar cells

This work provides a simple and effective method to improve the performance of perovskite solar cells by replacing DMSO with FAI. As a result, the crystallinity and morphology of the perovskite layer are improved, and a PCE of 20.79% resulted with higher long-term stability.

Graphical abstract: Engineering the intermediate adduct phase to control the crystallization of perovskites for efficient and stable perovskite solar cells
From the themed collection: FOCUS: Perovskite Materials and Devices
Research Article

Oxygen vacancies confined in hierarchically porous CsPbBr3@Pb-MOF through in situ structural transformation for promoting photocatalytic CO2 reduction

Via in situ structural transformation, hydrophobic hierarchically porous CsPbBr3@Pb-MOF with oxygen vacancies is prepared for efficient photoreduction of CO2 in the gas–solid mode.

Graphical abstract: Oxygen vacancies confined in hierarchically porous CsPbBr3@Pb-MOF through in situ structural transformation for promoting photocatalytic CO2 reduction
Research Article

Fast rotating dipole array inducing large dielectric response in a Ruddlesden–Popper hybrid perovskite ferroelastic

A 2D RP hybrid perovskite shows dynamic rotating motion of the polar rotor which inducing ferroelasticity and a tremendous dielectric response. This study provides a new vision for the development of dynamic functional materials.

Graphical abstract: Fast rotating dipole array inducing large dielectric response in a Ruddlesden–Popper hybrid perovskite ferroelastic
From the themed collection: FOCUS: Perovskite Materials and Devices
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About this collection

Perovskites have been extensively researched in the past decade, and explored in fields stepping out from photovoltaics towards photothermal and thermoelectric energy conversion, light emission, high-energy electromagnetic radiation detection, memristors/artificial synapses, ferroelectricity, etc.

This focus collection highlights the exciting research on the perovskite materials and devices that recently appeared in Materials Chemistry Frontiers and Inorganic Chemistry Frontiers. Articles featured in our focus collections are handpicked by Editors. We hope you find them enjoyable to read.

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