Ultrathin In2O3 Nanosheets toward High Responsivity and Rejection Ratio Visible-Blind UV Photodetection

doi:10.1002/smll.202205623

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	Ultrathin In2O3 Nanosheets toward High Responsivity and Rejection Ratio Visible-Blind UV Photodetection
	M. X. Zhang; H. Yu; H. Li; Y. Jiang; L. H. Qu; Y. X. Wang; F. Gao and W. Feng
	2022
发表期刊	Small
ISSN	1613-6810
页码	8
摘要	Photoelectrochemical-type visible-blind ultraviolet photodetectors (PEC VBUV PDs) have gained ever-growing attention due to their simple fabrication processes, uncomplicated packaging technology, and high sensitivity. However, it is still challenging to achieve high-performance PEC VBUV PDs based on a single material with good spectral selectivity. Here, it is demonstrated that individual ultrathin indium oxide (In2O3) nanosheets (NSs) are suitable for designing high-performance PEC VBUV PDs with high responsivity and UV/visible rejection ratio for the first time. In2O3 NSs PEC PDs show excellent UV photodetection capability with an ultrahigh photoresponsivity of 172.36 mA W-1 and a high specific detectivity of 4.43 x 10(11) Jones under 254 nm irradiation, which originates from the smaller charge transfer resistance (R-ct) at the In2O3 NSs/electrolyte interface. The light absorption of In2O3 NSs takes a blueshift due to the quantum confinement effect, granting good spectral selectivity for visible-blind detection. The UV/visible rejection ratio of In2O3 NSs PEC PDs is 1567, which is 30 times higher than that of In2O3 nanoparticles (NPs) and exceeds all recently reported PEC VBUV PDs. Moreover, In2O3 NSs PEC PDs show good stability and good underwater imaging capability. The results verify that ultrathin In2O3 NSs have potential in underwater optoelectronic devices.
DOI	10.1002/smll.202205623
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收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67214
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	M. X. Zhang,H. Yu,H. Li,et al. Ultrathin In2O3 Nanosheets toward High Responsivity and Rejection Ratio Visible-Blind UV Photodetection[J]. Small,2022:8.
APA	M. X. Zhang.,H. Yu.,H. Li.,Y. Jiang.,L. H. Qu.,...&F. Gao and W. Feng.(2022).Ultrathin In2O3 Nanosheets toward High Responsivity and Rejection Ratio Visible-Blind UV Photodetection.Small,8.
MLA	M. X. Zhang,et al."Ultrathin In2O3 Nanosheets toward High Responsivity and Rejection Ratio Visible-Blind UV Photodetection".Small (2022):8.

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