Themed collection FOCUS: Recent progress on bioimaging technologies

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

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

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.

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.

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.

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

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

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.

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.

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.

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.

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.

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

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.

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.

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

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

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

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.

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.

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

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).

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

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.

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.

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.

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.

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.

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.

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.

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.

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

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%.

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

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.

The Er³⁺ single-doped NaGdTi_1.8Al_0.2O₆ 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.

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.

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.

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.

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.

A radiochromic semiconductor detector for dual-mode direct X-ray detection, showing rapid color changes and high sensitivity upon X-ray exposure, is reported. This allows quickly capturing object information through visual inspection and serves as an alternative means of direct X-ray detection.

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.

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

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.

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.

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.

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

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.

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.

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.

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

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.

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.

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.

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.

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.

Centimeter-sized Cs_mSb_nCl_m+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.

Lead-halide perovskites exhibit excellent photovoltaic properties.

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

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.

Due to strong overlap between the triplet emission of DPTA and ¹S₀ → ³P_x 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.

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

A gradient TiO₂/a-TaN_x 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.

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

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.

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.

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

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.

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.

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.