Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films

Solution-processed metal halide perovskites (MHPs) have demonstrated great advances on achieving high-performance photodetectors. However, the intrinsic material instability and the toxicity of lead still hinder the practical applications of MHPs-based photodetectors. In this work, the first highly...

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Main Authors: Yang, Jie, Bao, Chunxiong, Ning, Weihua, Wu, Bo, Ji, Fuxiang, Yan, Zhibo, Tao, Youtian, Liu, Jun-Ming, Sum, Tze Chien, Bai, Sai, Wang, Jianpu, Huang, Wei, Zhang, Wenjing, Gao, Feng
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/139200
https://doi.org/10.21979/N9/QITZEA
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1392002023-02-28T20:01:10Z Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films Yang, Jie Bao, Chunxiong Ning, Weihua Wu, Bo Ji, Fuxiang Yan, Zhibo Tao, Youtian Liu, Jun-Ming Sum, Tze Chien Bai, Sai Wang, Jianpu Huang, Wei Zhang, Wenjing Gao, Feng School of Physical and Mathematical Sciences Science::Physics Cs2AgBiBr6 Environmental Stability Solution-processed metal halide perovskites (MHPs) have demonstrated great advances on achieving high-performance photodetectors. However, the intrinsic material instability and the toxicity of lead still hinder the practical applications of MHPs-based photodetectors. In this work, the first highly sensitive and fast-response lead-free perovskite photodetectors based on Cs2AgBiBr6 double perovskite films are demonstrated. A convenient solution method is developed to deposit high-quality Cs2AgBiBr6 film with large grain sizes, low trap densities, and long charge carrier lifetimes. Incorporated within a photodiode device architecture comprised of optimized hole- and electron-transporting layers, lead-free perovskite photodetectors are achieved exhibiting a high detectivity of 3.29 × 1012 Jones, a large linear dynamic range of 193 dB, and a fast response time of ≈17 ns. All the key figures of merit of the devices are comparable with the reported best-performing photodetectors based on lead halide perovskites. In addition, the resulting devices exhibit excellent thermal and environmental stability. The nonencapsulated devices show negligible degradation after thermal stressing at 150 °C and less than 5% degradation in the photoresponsivity after storage in ambient air for ≈2300 h. The results demonstrate the great potential of the lead-free Cs2AgBiBr6 double perovskite in applications for environmentally friendly and high-performance photodetectors. Accepted version 2020-05-18T03:34:35Z 2020-05-18T03:34:35Z 2019 Journal Article Yang, J., Bao, C., Ning, W., Wu, B., Ji, F., Yan, Z., . . . Gao, F. (2019). Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films. Advanced Optical Materials, 7(13), 1801732-. doi:10.1002/adom.201801732 2195-1071 https://hdl.handle.net/10356/139200 10.1002/adom.201801732 2-s2.0-85065447641 13 7 en Advanced Optical Materials https://doi.org/10.21979/N9/QITZEA This is the peer reviewed version of the following article: Yang, J., Bao, C., Ning, W., Wu, B., Ji, F., Yan, Z., . . . Gao, F. (2019). Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films. Advanced Optical Materials, 7(13), 1801732-, which has been published in final form at https://doi.org/10.1002/adom.201801732. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Cs2AgBiBr6
Environmental Stability
spellingShingle Science::Physics
Cs2AgBiBr6
Environmental Stability
Yang, Jie
Bao, Chunxiong
Ning, Weihua
Wu, Bo
Ji, Fuxiang
Yan, Zhibo
Tao, Youtian
Liu, Jun-Ming
Sum, Tze Chien
Bai, Sai
Wang, Jianpu
Huang, Wei
Zhang, Wenjing
Gao, Feng
Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films
description Solution-processed metal halide perovskites (MHPs) have demonstrated great advances on achieving high-performance photodetectors. However, the intrinsic material instability and the toxicity of lead still hinder the practical applications of MHPs-based photodetectors. In this work, the first highly sensitive and fast-response lead-free perovskite photodetectors based on Cs2AgBiBr6 double perovskite films are demonstrated. A convenient solution method is developed to deposit high-quality Cs2AgBiBr6 film with large grain sizes, low trap densities, and long charge carrier lifetimes. Incorporated within a photodiode device architecture comprised of optimized hole- and electron-transporting layers, lead-free perovskite photodetectors are achieved exhibiting a high detectivity of 3.29 × 1012 Jones, a large linear dynamic range of 193 dB, and a fast response time of ≈17 ns. All the key figures of merit of the devices are comparable with the reported best-performing photodetectors based on lead halide perovskites. In addition, the resulting devices exhibit excellent thermal and environmental stability. The nonencapsulated devices show negligible degradation after thermal stressing at 150 °C and less than 5% degradation in the photoresponsivity after storage in ambient air for ≈2300 h. The results demonstrate the great potential of the lead-free Cs2AgBiBr6 double perovskite in applications for environmentally friendly and high-performance photodetectors.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Yang, Jie
Bao, Chunxiong
Ning, Weihua
Wu, Bo
Ji, Fuxiang
Yan, Zhibo
Tao, Youtian
Liu, Jun-Ming
Sum, Tze Chien
Bai, Sai
Wang, Jianpu
Huang, Wei
Zhang, Wenjing
Gao, Feng
format Article
author Yang, Jie
Bao, Chunxiong
Ning, Weihua
Wu, Bo
Ji, Fuxiang
Yan, Zhibo
Tao, Youtian
Liu, Jun-Ming
Sum, Tze Chien
Bai, Sai
Wang, Jianpu
Huang, Wei
Zhang, Wenjing
Gao, Feng
author_sort Yang, Jie
title Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films
title_short Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films
title_full Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films
title_fullStr Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films
title_full_unstemmed Stable, high-sensitivity and fast-response photodetectors based on lead-free Cs2AgBiBr6 double perovskite films
title_sort stable, high-sensitivity and fast-response photodetectors based on lead-free cs2agbibr6 double perovskite films
publishDate 2020
url https://hdl.handle.net/10356/139200
https://doi.org/10.21979/N9/QITZEA
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