A high performance UV–visible dual-band photodetector based on an inorganic Cs 2 SnI 6 perovskite/ZnO heterojunction structure
Abstract
Inorganic metal halide (IMH) perovskites have recently emerged as highly promising optoelectronic materials due to their excellent material properties, including tunable direct bandgap, long carrier diffusion length, high carrier mobility and outstanding environmental stabilities. However, the performance of photodetectors fabricated from IMH perovskites so far is limited as compared to their counterparts based on organic–inorganic hybrid perovskites. In this work, we demonstrate a high performance ultraviolet–visible (UV–Vis) dual-band photodetector based on a Cs2SnI6/ZnO heterojunction structure. Therefore, by adjusting the polarity of the applied bias voltage, the photodetector can switch between two operation modes: (1) UV–Vis dual-band detection mode and (2) visible-blind UV detection mode. High detectivity in both the UV (1.39 × 1012 Jones) and visible (5.88 × 1011 Jones) regions is achieved. In addition, this photodetector demonstrated a fast response speed with a rise and fall time on the order of milliseconds and a large linear dynamic range of 119 dB. The excellent performance of this photodetector originates from efficient charge separation at the heterojunction interfaces, which will be discussed in detail in terms of the energy band diagrams and carrier dynamics of the device. Our study demonstrates the great application potential of inorganic vacancy-ordered perovskites in high-performance heterojunctionmore »
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Center for Performance and Design of Nuclear Waste Forms and Containers (WastePD); The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1767710
- Alternate Identifier(s):
- OSTI ID: 1581026
- Grant/Contract Number:
- SC0016584
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Materials Chemistry C
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 5; Journal ID: ISSN 2050-7526
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; nuclear; defects; corrosion
Citation Formats
Shao, Dali, Zhu, Weiguang, Xin, Guoqing, Liu, Xueqing, Wang, Tianmeng, Shi, Sufei, Lian, Jie, and Sawyer, Shayla. A high performance UV–visible dual-band photodetector based on an inorganic Cs 2 SnI 6 perovskite/ZnO heterojunction structure. United States: N. p., 2019.
Web. doi:10.1039/C9TC05940G.
Shao, Dali, Zhu, Weiguang, Xin, Guoqing, Liu, Xueqing, Wang, Tianmeng, Shi, Sufei, Lian, Jie, & Sawyer, Shayla. A high performance UV–visible dual-band photodetector based on an inorganic Cs 2 SnI 6 perovskite/ZnO heterojunction structure. United States. https://doi.org/10.1039/C9TC05940G
Shao, Dali, Zhu, Weiguang, Xin, Guoqing, Liu, Xueqing, Wang, Tianmeng, Shi, Sufei, Lian, Jie, and Sawyer, Shayla. Wed .
"A high performance UV–visible dual-band photodetector based on an inorganic Cs 2 SnI 6 perovskite/ZnO heterojunction structure". United States. https://doi.org/10.1039/C9TC05940G. https://www.osti.gov/servlets/purl/1767710.
@article{osti_1767710,
title = {A high performance UV–visible dual-band photodetector based on an inorganic Cs 2 SnI 6 perovskite/ZnO heterojunction structure},
author = {Shao, Dali and Zhu, Weiguang and Xin, Guoqing and Liu, Xueqing and Wang, Tianmeng and Shi, Sufei and Lian, Jie and Sawyer, Shayla},
abstractNote = {Inorganic metal halide (IMH) perovskites have recently emerged as highly promising optoelectronic materials due to their excellent material properties, including tunable direct bandgap, long carrier diffusion length, high carrier mobility and outstanding environmental stabilities. However, the performance of photodetectors fabricated from IMH perovskites so far is limited as compared to their counterparts based on organic–inorganic hybrid perovskites. In this work, we demonstrate a high performance ultraviolet–visible (UV–Vis) dual-band photodetector based on a Cs2SnI6/ZnO heterojunction structure. Therefore, by adjusting the polarity of the applied bias voltage, the photodetector can switch between two operation modes: (1) UV–Vis dual-band detection mode and (2) visible-blind UV detection mode. High detectivity in both the UV (1.39 × 1012 Jones) and visible (5.88 × 1011 Jones) regions is achieved. In addition, this photodetector demonstrated a fast response speed with a rise and fall time on the order of milliseconds and a large linear dynamic range of 119 dB. The excellent performance of this photodetector originates from efficient charge separation at the heterojunction interfaces, which will be discussed in detail in terms of the energy band diagrams and carrier dynamics of the device. Our study demonstrates the great application potential of inorganic vacancy-ordered perovskites in high-performance heterojunction photodetectors.},
doi = {10.1039/C9TC05940G},
journal = {Journal of Materials Chemistry C},
number = 5,
volume = 8,
place = {United States},
year = {Wed Dec 11 00:00:00 EST 2019},
month = {Wed Dec 11 00:00:00 EST 2019}
}
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