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Themed collection Electronic Properties and Characterisation of Perovskites

12 items
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Halide perovskites for resistive random-access memories

Halide-perovskites-based resistive random-access memory (ReRAM) devices are emerging as a new class of revolutionary data storage devices because the switching material—halide perovskite—has received considerable attention in recent years owing to its unique and exotic electrical, optical, and structural properties.

Graphical abstract: Halide perovskites for resistive random-access memories
Paper

Efficient and stable all-inorganic perovskite solar cells based on nonstoichiometric CsxPbI2Brx (x > 1) alloys

Overstoichiometric alloy-type material Cs1.2PbI2Br1.2 delivered superior optoelectronic, morphological and photovoltaic characteristics in combination with the enhanced stability thus outperforming conventional CsPbI2Br perovskite.

Graphical abstract: Efficient and stable all-inorganic perovskite solar cells based on nonstoichiometric CsxPbI2Brx (x > 1) alloys
Paper

Deprotonation and vacancies at the CH3NH3PbI3/ZnO and CH3NH3PbI3/GaN interfaces, detected in their theoretical XANES

Fingerprints of dehydrogenation and atomic vacancies at the MAPbI3/ZnO and MAPbI3/GaN interfaces in their theoretical XANES.

Graphical abstract: Deprotonation and vacancies at the CH3NH3PbI3/ZnO and CH3NH3PbI3/GaN interfaces, detected in their theoretical XANES
Paper

Intrinsic stability enhancement and ionic migration reduction by fluorinated cations incorporated in hybrid lead halide perovskites

Improving the stability of the hybrid perovskite solar cell is believed to be the main step toward large scale commercialization of this technology. Low controlled concentrations of fluorinated methylammonium cations added to the absorber could prevent its degradation due to water and ionic migration under applied bias due to of the reduction in the migration rate.

Graphical abstract: Intrinsic stability enhancement and ionic migration reduction by fluorinated cations incorporated in hybrid lead halide perovskites
Paper

Effect of small molecule additives on efficient operation of all inorganic polycrystalline perovskite light-emitting diodes

The effect of the small molecule PBD additive on the performance of the all inorganic polycrystalline CsPbBr3-based PeLEDs was studied.

Graphical abstract: Effect of small molecule additives on efficient operation of all inorganic polycrystalline perovskite light-emitting diodes
Paper

Effect of density of surface defects on photoluminescence properties in MAPbI3 perovskite films

This work investigates the effect of energetically shallow and deep surface defects in MAPbI3 films on the evolution of their photoluminescence properties upon exposure to ambient environment.

Graphical abstract: Effect of density of surface defects on photoluminescence properties in MAPbI3 perovskite films
Paper

On the effect of atomic layer deposited Al2O3 on the environmental degradation of hybrid perovskite probed by positron annihilation spectroscopy

Doppler broadening-positron annihilation spectroscopy (DB-PAS) provides insights into the structural degradation of pristine and ALD Al2O3 capped CH3NH3PbI3−xClx under ambient air exposure.

Graphical abstract: On the effect of atomic layer deposited Al2O3 on the environmental degradation of hybrid perovskite probed by positron annihilation spectroscopy
Paper

The hysteresis-free behavior of perovskite solar cells from the perspective of the measurement conditions

We investigate how far the hysteresis-free behavior of perovskite solar cells can be reproduced using particular pre-conditioning and measurement conditions.

Graphical abstract: The hysteresis-free behavior of perovskite solar cells from the perspective of the measurement conditions
Paper

A sodium citrate-modified-PEDOT:PSS hole transporting layer for performance enhancement in inverted planar perovskite solar cells

A sodium citrate-modified-PEDOT:PSS hole transporting layer assists in the growth of the perovskite crystal, and favors the charge collection in the perovskite solar cells.

Graphical abstract: A sodium citrate-modified-PEDOT:PSS hole transporting layer for performance enhancement in inverted planar perovskite solar cells
Paper

Amine additive reactions induced by the soft Lewis acidity of Pb2+ in halide perovskites. Part I: evidence for Pb–alkylamide formation

Simple aliphatic amine additives are shown to react with PbI2 in perovskite inks to form amido Pb and alkylammonium species.

Graphical abstract: Amine additive reactions induced by the soft Lewis acidity of Pb2+ in halide perovskites. Part I: evidence for Pb–alkylamide formation
Paper

Amine additive reactions induced by the soft Lewis acidity of Pb2+ in halide perovskites. Part II: impacts of amido Pb impurities in methylammonium lead triiodide thin films

The beneficial and detrimental effects of amido Pb impurities incorporated in methylammonium lead triiodide thin films are characterized by photoemission spectroscopy.

Graphical abstract: Amine additive reactions induced by the soft Lewis acidity of Pb2+ in halide perovskites. Part II: impacts of amido Pb impurities in methylammonium lead triiodide thin films
Paper

Low cost triazatruxene hole transporting material for >20% efficiency perovskite solar cells

Organic hole-transporting materials (HTM) have shown excellent ability in achieving high efficiency perovskite solar cells.

Graphical abstract: Low cost triazatruxene hole transporting material for >20% efficiency perovskite solar cells
12 items

About this collection

Guest Edited by Derya Baran, King Abdullah University of Science and Technology, KAUST, Chittaranjan Das, Institute for Applied Materials at Karlsruhe Institute of Technology, KIT, Malgorzata Kot, Brandenburg University of Technology Cottbus – Senftenberg, and Michael Saliba, Adolphe Merkle Institute, University of Fribourg.

This themed issue on ‘Electronic Properties and Characterisation of Perovskites’ will showcase work across all aspects of the electronic properties and characterisation of perovskite materials and devices. Submissions can be theoretical and/or experimental studies that focus on the preparation or understanding of materials for perovskite solar cells. The novelty and advance in submitted work should focus on the properties, characterisation or applications of the materials produced, or on the chemistry used to produce the materials.

Moreover, the scope of this issue will align with an accompanying Symposium at the 2018 Fall E-MRS meeting: Symposium C: Perovskite solar cells: surface, interface and materials aspects, which was held at the Warsaw University of Technology, from 17-20 September 2018.


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