Are Shockley-Read-Hall and ABC models valid for lead halide perovskites?
Kiligaridis, Alexander LU ; Frantsuzov, Pavel A. LU ; Yangui, Aymen LU ; Seth, Sudipta LU ; Li, Jun LU
; An, Qingzhi
; Vaynzof, Yana
and Scheblykin, Ivan G.
LU
(2021)
In Nature Communications
12.
- Abstract
Metal halide perovskites are an important class of emerging semiconductors. Their charge carrier dynamics is poorly understood due to limited knowledge of defect physics and charge carrier recombination mechanisms. Nevertheless, classical ABC and Shockley-Read-Hall (SRH) models are ubiquitously applied to perovskites without considering their validity. Herein, an advanced technique mapping photoluminescence quantum yield (PLQY) as a function of both the excitation pulse energy and repetition frequency is developed and employed to examine the validity of these models. While ABC and SRH fail to explain the charge dynamics in a broad range of conditions, the addition of Auger recombination and trapping to the SRH model enables a... (More)
Metal halide perovskites are an important class of emerging semiconductors. Their charge carrier dynamics is poorly understood due to limited knowledge of defect physics and charge carrier recombination mechanisms. Nevertheless, classical ABC and Shockley-Read-Hall (SRH) models are ubiquitously applied to perovskites without considering their validity. Herein, an advanced technique mapping photoluminescence quantum yield (PLQY) as a function of both the excitation pulse energy and repetition frequency is developed and employed to examine the validity of these models. While ABC and SRH fail to explain the charge dynamics in a broad range of conditions, the addition of Auger recombination and trapping to the SRH model enables a quantitative fitting of PLQY maps and low-power PL decay kinetics, and extracting trap concentrations and efficacies. However, PL kinetics at high power are too fast and cannot be explained. The proposed PLQY mapping technique is ideal for a comprehensive testing of theories and applicable to any semiconductor.
(Less)
- author
- Kiligaridis, Alexander
LU
; Frantsuzov, Pavel A.
LU
; Yangui, Aymen
LU
; Seth, Sudipta
LU
; Li, Jun
LU
; An, Qingzhi
; Vaynzof, Yana
and Scheblykin, Ivan G.
LU
- organization
- publishing date
- 2021-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nature Communications
- volume
- 12
- article number
- 3329
- publisher
- Nature Publishing Group
- external identifiers
-
- scopus:85107577151
- pmid:34099662
- ISSN
- 2041-1723
- DOI
- 10.1038/s41467-021-23275-w
- language
- English
- LU publication?
- yes
- id
- bd50c3da-c9f7-4732-a75e-acebd477251b
- date added to LUP
- 2021-07-01 13:49:28
- date last changed
- 2024-06-29 14:13:29
@article{bd50c3da-c9f7-4732-a75e-acebd477251b,
abstract = {{<p>Metal halide perovskites are an important class of emerging semiconductors. Their charge carrier dynamics is poorly understood due to limited knowledge of defect physics and charge carrier recombination mechanisms. Nevertheless, classical ABC and Shockley-Read-Hall (SRH) models are ubiquitously applied to perovskites without considering their validity. Herein, an advanced technique mapping photoluminescence quantum yield (PLQY) as a function of both the excitation pulse energy and repetition frequency is developed and employed to examine the validity of these models. While ABC and SRH fail to explain the charge dynamics in a broad range of conditions, the addition of Auger recombination and trapping to the SRH model enables a quantitative fitting of PLQY maps and low-power PL decay kinetics, and extracting trap concentrations and efficacies. However, PL kinetics at high power are too fast and cannot be explained. The proposed PLQY mapping technique is ideal for a comprehensive testing of theories and applicable to any semiconductor.</p>}},
author = {{Kiligaridis, Alexander and Frantsuzov, Pavel A. and Yangui, Aymen and Seth, Sudipta and Li, Jun and An, Qingzhi and Vaynzof, Yana and Scheblykin, Ivan G.}},
issn = {{2041-1723}},
language = {{eng}},
publisher = {{Nature Publishing Group}},
series = {{Nature Communications}},
title = {{Are Shockley-Read-Hall and ABC models valid for lead halide perovskites?}},
url = {{http://dx.doi.org/10.1038/s41467-021-23275-w}},
doi = {{10.1038/s41467-021-23275-w}},
volume = {{12}},
year = {{2021}},
}