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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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 |
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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 |
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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. |
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School of Physical and Mathematical Sciences |
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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 |
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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 |
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2020 |
url |
https://hdl.handle.net/10356/139200 https://doi.org/10.21979/N9/QITZEA |
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1759852976968564736 |