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Title: Correctly Assessing Defect Tolerance in Halide Perovskites

Journal Article · · Journal of Physical Chemistry. C

The notion of “defect tolerance” has often been invoked to explain the excellent performance of halide perovskites in optoelectronic applications. However, this concept has not been rigorously defined or assessed. A common interpretation is that all of the energetically favorable intrinsic defects are shallow. On the basis of examples in the prototypical halide perovskite CsPbI3, we show that this is not the case. The antisite defects PbI and IPb are energetically favorable, but also have levels deep in the band gap. Still, because of strong anharmonicity, they are not efficient nonradiative recombination centers. Here, our study demonstrates how to correctly evaluate the “defect tolerance” of halide perovskites.

Research Organization:
Univ. of California, Santa Barbara, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0010689; AC02-05CH11231
OSTI ID:
1601528
Journal Information:
Journal of Physical Chemistry. C, Vol. 124, Issue 11; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 43 works
Citation information provided by
Web of Science

References (26)

Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells journal June 2017
Methylammonium Chloride Induces Intermediate Phase Stabilization for Efficient Perovskite Solar Cells journal September 2019
Efficient perovskite light-emitting diodes featuring nanometre-sized crystallites journal January 2017
Defect Tolerance in Methylammonium Lead Triiodide Perovskite journal July 2016
High Defect Tolerance in Lead Halide Perovskite CsPbBr 3 journal January 2017
Tutorial: Defects in semiconductors—Combining experiment and theory journal May 2016
Nonradiative capture and recombination by multiphonon emission in GaAs and GaP journal January 1977
Unusual defect physics in CH 3 NH 3 PbI 3 perovskite solar cell absorber journal February 2014
Density Functional Calculations of Native Defects in CH 3 NH 3 PbI 3 : Effects of Spin–Orbit Coupling and Self-Interaction Error journal April 2015
Identification of Trap States in Perovskite Solar Cells journal June 2015
Hole Trapping by Iodine Interstitial Defects Decreases Free Carrier Losses in Perovskite Solar Cells: A Time-Domain Ab Initio Study journal May 2017
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Projector augmented-wave method journal December 1994
Special points for Brillouin-zone integrations journal June 1976
Hybrid functionals based on a screened Coulomb potential journal May 2003
Thermodynamically Stable Orthorhombic γ-CsPbI 3 Thin Films for High-Performance Photovoltaics journal August 2018
First-principles calculations for point defects in solids journal March 2014
Fully Ab Initio Finite-Size Corrections for Charged-Defect Supercell Calculations journal January 2009
First-principles theory of nonradiative carrier capture via multiphonon emission journal August 2014
Energetics, Structures, and Phase Transitions of Cubic and Orthorhombic Cesium Lead Iodide (CsPbI 3 ) Polymorphs journal September 2019
Structural Instabilities Related to Highly Anharmonic Phonons in Halide Perovskites journal June 2017
Thermodynamically stabilized β-CsPbI 3 –based perovskite solar cells with efficiencies >18% journal August 2019
Thermal unequilibrium of strained black CsPbI 3 thin films journal July 2019
Role of excited states in Shockley-Read-Hall recombination in wide-band-gap semiconductors journal May 2016
First‐Principles Simulation of Carrier Recombination Mechanisms in Halide Perovskites journal April 2020
Anharmonicity Extends Carrier Lifetimes in Lead Halide Perovskites at Elevated Temperatures journal September 2019