期刊
ACS APPLIED NANO MATERIALS
卷 5, 期 5, 页码 7036-7041出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.2c00990
关键词
In2Se3 nanosheets; electrochemical exfoliation; photoelectrochemical; self-powered; photodetectors
资金
- National Key Research and Development Program of China [2019YFA0705204]
- Heilongjiang Provincial Natural Science Foundation of China [YQ2020E003]
- Fundamental Research Funds for the Central Universities [2572021BU01]
- Heilongjiang Provincial Undergraduate Innovative and Entrepreneurial Training Program [202110225259]
2D In2Se3 nanosheets are synthesized by an electrochemical exfoliation method and self-powered In2Se3 PEC photodetectors are fabricated by a simple drop-casting method. These photodetectors exhibit a broadband photoresponse from ultraviolet to near-infrared with high responsivity, fast response speed, and good stability, surpassing most 2D material-based PEC photodetectors and showing great promise for next-generation high-performance optoelectronic devices.
Two-dimensional (2D) In2Se3 has received considerable attention due to its suitable band gap, good photoresponse, and high stability, making it a good candidate for high-performance photodetectors. Self-powered 2D In2Se3-based photodetectors consisting of heterojunctions usually require a complex fabrication process, hindering their application. In this work, we synthesize 2D In2Se3 nanosheets by an electrochemical exfoliation method and fabricate self-powered In2Se3 photoelectrochemical (PEC) photodetectors by a simple drop-casting method. The self-powered In2Se3 PEC photodetectors show a broadband photoresponse from ultraviolet (365 nm) to near-infrared (850 nm) with a high responsivity of 1.88 mA/W, fast response speed of 1 ms, and good stability, surpassing most 2D material-based PEC photodetectors. Our results demonstrate that self-powered In2Se3 PEC photodetectors hold great promise in next-generation high-performance optoelectronic devices.
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