scholarly journals Defect tolerant device geometries for lead-halide perovskites

2021 ◽  
Author(s):  
Basita Das ◽  
Zhifa Liu ◽  
Irene Aguilera ◽  
Uwe Rau ◽  
Thomas Kirchartz
Keyword(s):  
Thin Films ◽  
Defect Tolerance ◽  
Solution Processed ◽  
Radiative Lifetimes ◽  
Polycrystalline Thin Films ◽  
Halide Perovskites ◽  
Lead Halide

The term defect tolerance is widely used in literature to describe materials such as lead-halides perovskites, where solution-processed polycrystalline thin films exhibit long non-radiative lifetimes of microseconds or longer. Studies...

Enhancing Defect Tolerance with Ligands at the Surface of Lead Halide Perovskites

2021 ◽  
pp. 6299-6304
Author(s):  
Tyler J. Smart ◽  
Hiroyuki Takenaka ◽  
Tuan Anh Pham ◽  
Liang Z. Tan ◽  
Jin Z. Zhang ◽  
...  
Keyword(s):  
Defect Tolerance ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Detection of X-ray photons by solution-processed lead halide perovskites

2015 ◽  
Vol 9 (7) ◽  
pp. 444-449 ◽  
Author(s):  
Sergii Yakunin ◽  
Mykhailo Sytnyk ◽  
Dominik Kriegner ◽  
Shreetu Shrestha ◽  
Moses Richter ◽  
...  
Keyword(s):  
Solution Processed ◽  
X Ray ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Solution‐Processed Faraday Rotators Using Single Crystal Lead Halide Perovskites

2020 ◽  
Vol 7 (7) ◽  
pp. 1902950 ◽  
Author(s):  
Randy P Sabatini ◽  
Chwenhaw Liao ◽  
Stefano Bernardi ◽  
Wenxin Mao ◽  
Matthew S. Rahme ◽  
...  
Keyword(s):  
Single Crystal ◽  
Solution Processed ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Comment on “ferroelectricity-free lead halide perovskites” by A. Gómez, Q. Wang, A. R. Goñi, M. Campoy-Quiles and A. Abate, Energy Environ. Sci., 2019, 12, 2537

2020 ◽  
Vol 13 (6) ◽  
pp. 1888-1891
Author(s):  
Alexander Colsmann ◽  
Tobias Leonhard ◽  
Alexander D. Schulz ◽  
Holger Röhm
Keyword(s):  
Thin Films ◽  
Metal Halide ◽  
Organic Metal ◽  
Metal Halide Perovskite ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Energy Environ

This comment analyzes pitfalls when investigating piezoresponse and ferroelectricity in organic-metal halide perovskite thin films.

Iodine chemistry determines the defect tolerance of lead-halide perovskites

2018 ◽  
Vol 11 (3) ◽  
pp. 702-713 ◽  
Author(s):  
Daniele Meggiolaro ◽  
Silvia G. Motti ◽  
Edoardo Mosconi ◽  
Alex J. Barker ◽  
James Ball ◽  
...  
Keyword(s):  
Defect Tolerance ◽  
Electron Hole ◽  
Halide Perovskites ◽  
Iodine Chemistry ◽  
Lead Halide

Electron/hole traps related to interstitial iodine defects show the typical features of iodine photo-electrochemistry, inducing MAPbI3 defect tolerance.

Enhanced Lasing Performance in Solution-processed Lead Halide Perovskites Covered with PMMA and Ag

2016 ◽  
Author(s):  
Tsung Sheng Kao ◽  
Yu-Hsun Chou ◽  
Kuo-Bin Hong ◽  
Jiong-Fu Huang ◽  
Fang-Chung Chen ◽  
...  
Keyword(s):  
Solution Processed ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Interaction of light with lead halide perovskites: A review

2019 ◽  
Vol 2 (2) ◽  
pp. 67
Author(s):  
Zhiya Dang ◽  
Duc Anh Dinh
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Light Illumination ◽  
Low Light ◽  
Practical Applications ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
First Time ◽  
Lead Halide ◽  
Sample Environment

Lead halide perovskites are the new rising generation of semiconductor materials due to their unique optical and electrical properties. The investigation of the interaction of halide perovskites and light is a key issue not only for understanding their photophysics but also for practical applications. Hence, tremendous efforts have been devoted to this topic and brunch into two: (i) decomposition of the halide perovskites thin films under light illumination; and (ii) influence of light soaking on their photoluminescence (PL) properties. In this review, we for the first time thoroughly compare the illumination conditions and the sample environment to correlate the PL changes and decomposition of perovskite under light illumination. In the case of vacuum and dry nitrogen, PL of the halide perovskite (MAPbI3–xClx, MAPbBr3–xClx, MAPbI3) thin films decreases due to the defects induced by light illumination, and under high excitations, the thin film even decomposes. In the presence of oxygen or moisture, light induces the PL enhancement of halide perovskite (MAPbI3) thin films at low light illumination, while increasing the excitation, which causes the PL to quench and perovskite thin film to decompose. In the case of mixed halide perovskite ((MA)Pb(BrxI1-x)3) light induces reversible segregation of Br domains and I domains. 

Atomistic Origin of Lattice Softness and Its Impact on Structural and Carrier Dynamics in Three Dimensional Perovskites

2022 ◽  
Author(s):  
Zhendong Guo ◽  
Jing Wang ◽  
Wanjian Yin
Keyword(s):  
Material Properties ◽  
Three Dimensional ◽  
Carrier Dynamics ◽  
Defect Tolerance ◽  
Anharmonic Vibration ◽  
Unique Material ◽  
Halide Perovskites ◽  
Polaron Formation ◽  
Lead Halide

The soft lattices of lead-halide perovskites (LHPs) are responsible for their unique material properties, including polaron formation, defect tolerance, anharmonic vibration, and large electrostrictive response, which result in exotic carrier...

scholarly journals Strain-activated light-induced halide segregation in mixed-halide perovskite solids

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yicheng Zhao ◽  
Peng Miao ◽  
Jack Elia ◽  
Huiying Hu ◽  
Xiaoxia Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Single Crystals ◽  
Scanning Probe Microscopy ◽  
Strain Distribution ◽  
Scanning Probe ◽  
Uniaxial Pressure ◽  
Free Standing ◽  
Polycrystalline Thin Films ◽  
Halide Perovskites ◽  
Halide Perovskite

AbstractLight-induced halide segregation limits the bandgap tunability of mixed-halide perovskites for tandem photovoltaics. Here we report that light-induced halide segregation is strain-activated in MAPb(I1−xBrx)3 with Br concentration below approximately 50%, while it is intrinsic for Br concentration over approximately 50%. Free-standing single crystals of CH3NH3Pb(I0.65Br0.35)3 (35%Br) do not show halide segregation until uniaxial pressure is applied. Besides, 35%Br single crystals grown on lattice-mismatched substrates (e.g. single-crystal CaF2) show inhomogeneous segregation due to heterogenous strain distribution. Through scanning probe microscopy, the above findings are successfully translated to polycrystalline thin films. For 35%Br thin films, halide segregation selectively occurs at grain boundaries due to localized strain at the boundaries; yet for 65%Br films, halide segregation occurs in the whole layer. We close by demonstrating that only the strain-activated halide segregation (35%Br/45%Br thin films) could be suppressed if the strain is properly released via additives (e.g. KI) or ideal substrates (e.g. SiO2).

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