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Themed collection Perovskites

27 items
Feature Article

Charge transitions in perovskite oxides containing unusually high-valent Fe

Localisation of charge carrying ligand holes in perovskite oxides containing high-valent iron leads to unusual structural, magnetic, and transport behavior.

Graphical abstract: Charge transitions in perovskite oxides containing unusually high-valent Fe
From the themed collection: Perovskites
Feature Article

Atomic layer deposition for efficient and stable perovskite solar cells

Extended understandings of perovskite solar cells by recent ALD application studies as well as challenges toward enhancing the efficiency and stability will be addressed.

Graphical abstract: Atomic layer deposition for efficient and stable perovskite solar cells
From the themed collection: Perovskites
Feature Article

Hexagonal perovskite derivatives: a new direction in the design of oxide ion conducting materials

A structural rearrangement is observed in Ba3MM′O8.5 hexagonal perovskites above 300 °C, which enhances the oxide ionic conductivity.

Graphical abstract: Hexagonal perovskite derivatives: a new direction in the design of oxide ion conducting materials
From the themed collection: Perovskites
Feature Article

Morphological and compositional progress in halide perovskite solar cells

Perovskite solar cells (PSCs) reached a certified 23.7% efficiency in 2018 by boosting their surprisingly high open-circuit voltage (VOC) and photocurrent.

Graphical abstract: Morphological and compositional progress in halide perovskite solar cells
From the themed collection: Perovskites
Accepted Manuscript - Communication

Efficient Large Guanidinium Mixed Perovskite Solar Cells with Enhanced Photovoltage and Low Energy Losses

From the themed collection: Perovskites
Communication

Performance enhancement of AgBi2I7 solar cells by modulating a solvent-mediated adduct and tuning remnant BiI3 in one-step crystallization

We modulated a solvent-mediated adduct for one-step crystallization of lead-free AgBi2I7 at a lower temperature (90 °C) and to obtain remnant BiI3 by controlling the nature of the substrate and precursor concentration.

Graphical abstract: Performance enhancement of AgBi2I7 solar cells by modulating a solvent-mediated adduct and tuning remnant BiI3 in one-step crystallization
From the themed collection: Perovskites
Communication

Squeezing electrons out of 6s2 lone-pairs in perovskite-type oxides

Unit cell volume collapse in Ba2BiRuO6, Ba2BiIrO6 and Ba2BiOsO6 when Bi(III) is oxidised to Bi(V) by external applied pressure.

Graphical abstract: Squeezing electrons out of 6s2 lone-pairs in perovskite-type oxides
From the themed collection: Perovskites
Communication

Enhanced visible light absorption for lead-free double perovskite Cs2AgSbBr6

Lead-free double perovskite Cs2AgSbBr6 is synthesized to show a low indirect bandgap of 1.64 eV.

Graphical abstract: Enhanced visible light absorption for lead-free double perovskite Cs2AgSbBr6
From the themed collection: Perovskites
Communication

The hidden story in BaNiO3 to BaNiO2 transformation: adaptive structural series and NiO exsolution

Crystal-to-crystal transformation from BaNiO3 to BaNiO2 is reported.

Graphical abstract: The hidden story in BaNiO3 to BaNiO2 transformation: adaptive structural series and NiO exsolution
From the themed collection: Perovskites
Communication

Mn2CoReO6: a robust multisublattice antiferromagnetic perovskite with small A-site cations

Small A-site cations (Mn2+) induce complex magnetic structures in this transition-metal-only double perovskite.

Graphical abstract: Mn2CoReO6: a robust multisublattice antiferromagnetic perovskite with small A-site cations
From the themed collection: Perovskites
Communication

A perovskite-type Nd0.75Sr0.25Co0.8Fe0.2O3−δ cathode for advanced solid oxide fuel cells

Perovskite-type Nd0.75Sr0.25Co0.8Fe0.2O3−δ (NSCF) has shown excellent oxygen reduction reaction properties (an area specific polarization resistance of 0.1 Ω cm2 at 700 °C) as a composite cathode (30 wt% La0.8Sr0.2Ga0.8Mg0.2O3−δ (LSGM)) with remarkable chemical stability under CO2.

Graphical abstract: A perovskite-type Nd0.75Sr0.25Co0.8Fe0.2O3−δ cathode for advanced solid oxide fuel cells
From the themed collection: Perovskites
Communication

Anionic order and band gap engineering in vacancy ordered triple perovskites

Exchanging the iodide for bromide on Cs3Bi2Br9 redshifts the absorption band while maintaining the Cs3Bi2Br9 structure.

Graphical abstract: Anionic order and band gap engineering in vacancy ordered triple perovskites
From the themed collection: Perovskites
Communication

Topochemical nitridation of Sr2FeMoO6

The topotactic nitridation of cation ordered Sr2FeMoO6 in NH3 leads to cubic, Fm[3 with combining macron]m oxynitride Sr2FeMoO4.9N1.1 showing ferromagnetic order and negative magnetoresistance below 100 K.

Graphical abstract: Topochemical nitridation of Sr2FeMoO6
From the themed collection: Perovskites
Open Access Communication

Negative thermal expansion in high pressure layered perovskite Ca2GeO4

We report the high pressure synthesis of a layered perovskite Ca2GeO4 which is found to have the Ruddlesden–Popper structure with I41/acd symmetry, and to display pronounced uniaxial negative thermal expansion.

Graphical abstract: Negative thermal expansion in high pressure layered perovskite Ca2GeO4
From the themed collection: Perovskites
Communication

Polymorphism in M(H2PO2)3 (M = V, Al, Ga) compounds with the perovskite-related ReO3 structure

The connectivity of the ReO3 structure is reproduced in a series of hypophosphite compounds, M(H2PO2)3, where M = V, Al, Ga.

Graphical abstract: Polymorphism in M(H2PO2)3 (M = V, Al, Ga) compounds with the perovskite-related ReO3 structure
From the themed collection: Perovskites
Communication

Linear assembly of lead bromide-based nanoparticles inside lead(II) polymers prepared by mixing the precursors of both the nanoparticle and the polymer

Preparation of 1D assemblies of lead halide-based nanoparticles inside a lead bromide polymer by concurrent formation of lead(II) oligomers and the nanoparticles in the presence of cyclohexanemethylammonium bromide.

Graphical abstract: Linear assembly of lead bromide-based nanoparticles inside lead(ii) polymers prepared by mixing the precursors of both the nanoparticle and the polymer
From the themed collection: Perovskites
Communication

BaCoO2+δ: a new highly oxygen deficient perovskite-related phase with unusual Co coordination obtained by high temperature reaction with short reaction times

A pinch of oxygen: incorporation of small additional oxygen introduces partly square planar coordination into BaCoO2+δ.

Graphical abstract: BaCoO2+δ: a new highly oxygen deficient perovskite-related phase with unusual Co coordination obtained by high temperature reaction with short reaction times
From the themed collection: Perovskites
Communication

A low-temperature carbon electrode with good perovskite compatibility and high flexibility in carbon based perovskite solar cells

A low-temperature carbon electrode with good perovskite compatibility is employed in hole-transport-material free perovskite solar cells, and a champion power conversion efficiency (PCE) of 11.7% is obtained.

Graphical abstract: A low-temperature carbon electrode with good perovskite compatibility and high flexibility in carbon based perovskite solar cells
From the themed collection: Perovskites
Communication

Tuning octahedral tilts and the polar nature of A-site deficient perovskites

This work explores the possibility of tuning the structural chemistry of A-site deficient perovskite materials Ln1/3NbO3, and the balance between proper and hybrid-improper mechanisms for polar behaviour in these systems.

Graphical abstract: Tuning octahedral tilts and the polar nature of A-site deficient perovskites
From the themed collection: Perovskites
Open Access Communication

Ferri- and ferro-magnetism in CaMnMReO6 double double perovskites of late transition metals M = Co and Ni

Doubly ordered perovskites are reported for CaMnMReO6 (M = Co, Ni). CaMnNiReO6 is a remarkable example of a ferromagnetic oxide with four distinct spin sublattices all collinearly ordered below TC = 152 K.

Graphical abstract: Ferri- and ferro-magnetism in CaMnMReO6 double double perovskites of late transition metals M = Co and Ni
From the themed collection: Perovskites
Communication

Selective fluorination of perovskite iron oxide/ruthenium oxide heterostructures via a topotactic reaction

SrFeO2F/SrRuO3 epitaxial bilayer films were fabricated via a topotactic reaction with polyvinylidene difluoride while maintaining the epitaxial relationship.

Graphical abstract: Selective fluorination of perovskite iron oxide/ruthenium oxide heterostructures via a topotactic reaction
From the themed collection: Perovskites
Communication

Atomic layer deposition of a SnO2 electron-transporting layer for planar perovskite solar cells with a power conversion efficiency of 18.3%

High-efficiency planar type perovskite solar cells were fabricated by atomic layer deposition (ALD) of SnO2 and subsequent annealing at 180 °C.

Graphical abstract: Atomic layer deposition of a SnO2 electron-transporting layer for planar perovskite solar cells with a power conversion efficiency of 18.3%
From the themed collection: Perovskites
Open Access Communication

Assessment of magnetic properties of A2B′B′′O6 double perovskites by multivariate data analysis techniques

Multivariate data analysis is used in search of novel magnetically ordered perovskite oxides of the A2B′B′′O6 type.

Graphical abstract: Assessment of magnetic properties of A2B′B′′O6 double perovskites by multivariate data analysis techniques
From the themed collection: Perovskites
Communication

Iodide-ion conduction in methylammonium lead iodide perovskite: some extraordinary aspects

Certain surprising aspects of iodide-ion conduction in MAPbI3, such as the low migration barrier and the dominance of anti-Frenkel disorder, are discussed.

Graphical abstract: Iodide-ion conduction in methylammonium lead iodide perovskite: some extraordinary aspects
From the themed collection: Perovskites
Communication

Magnetic interactions in the S = 1/2 square-lattice antiferromagnets Ba2CuTeO6 and Ba2CuWO6: parent phases of a possible spin liquid

Magnetic interactions in double perovskites Ba2CuTeO6 and Ba2CuWO6 are characterized leading to a prediction of a spin-liquid-like state in Ba2Cu(Te1−xWx)O6.

Graphical abstract: Magnetic interactions in the S = 1/2 square-lattice antiferromagnets Ba2CuTeO6 and Ba2CuWO6: parent phases of a possible spin liquid
From the themed collection: Perovskites
Communication

The capricious nature of iodine catenation in I2 excess, perovskite-derived hybrid Pt(IV) compounds

Perovskite-derived hybrid platinum iodides with the general formula A2PtIVI6 (A = formamidinium FA and guanidinium GUA) accommodate excess I2 to yield hydrogen-bond-stabilized compounds where the I2 forms catenates with I anions on the PtI6 octahedra.

Graphical abstract: The capricious nature of iodine catenation in I2 excess, perovskite-derived hybrid Pt(iv) compounds
From the themed collection: Perovskites
Communication

Ambient condition retention of band-gap tuning in MAPbI3 induced by high pressure quenching

In the present work, we show a successful approach to achieve stable structural and optical changes induced by pressure on bulk amounts of MAPI after pressure release.

Graphical abstract: Ambient condition retention of band-gap tuning in MAPbI3 induced by high pressure quenching
From the themed collection: Perovskites
27 items

About this collection

We are delighted to bring you this Themed Collection on Perovskites, Guest Edited by Michael Hayward (University of Oxford), Nam-Gyu Park (Sungkyunkwan University) and Peter Slater (University of Birmingham). Perovskite materials are ubiquitous in a range of areas, e.g. magnetism, ionic and electronic conduction, catalysis. Hybrid organic-inorganic perovskites have also attracted an explosion of interest due to their potential applications in low cost solar cells. Research in all these areas has shown the flexibility of the perovskite structure, which allows the structure and properties to be tailored through appropriate chemical manipulations on both cation and anion sites.

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