Themed issue on electronic properties and characterisation of perovskites
Guest editors Małgorzata Kot, Chittaranjan Das, Derya Baran and Michael Saliba introduce this Journal of Materials Chemistry C themed issue on the electronic properties and characterisation of perovskites.
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.
The role of excitons in 3D and 2D lead halide perovskites
Excitons in lead halide perovskites often go unnoticed as minority species, yet they account for almost all of light emission.
Spatially resolved investigation of the defect states in methylammonium lead iodide perovskite bicrystals
Introducing a modal system approach for the analytical perovskite thin-film trap physics evaluation. Our study confirms existing models for trap formation in MAPI, substantiating different defect states in the grain boundary and bulk regions.
The difference in electronic structure of MAPI and MASI perovskites and its effect on the interface alignment to the HTMs spiro-MeOTAD and CuI
We have studied the electronic structure of CH3NH3PbI3 (MAPI) and CH3NH3SnI3 (MASI) perovskite films by performing X-ray photoelectron spectroscopy (XPS) measurements on in situ grown perovskite films.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.