Facile fabrication of heterostructure with p-BiOCl nanoflakes and n-ZnO thin film for UV photodetectors
2021-05
发表期刊JOURNAL OF SEMICONDUCTORS (IF:4.8[JCR-2023],3.3[5-Year])
ISSN1674-4926
卷号42期号:5
发表状态已发表
DOI10.1088/1674-4926/42/5/052301
摘要

Herein, high-quality n-ZnO film layer on c-sapphire and well-crystallized tetragonal p-BiOCl nanoflakes on Cu foil are prepared, respectively. According to the absorption spectra, the bandgaps of n-ZnO and p-BiOCl are confirmed as similar to 3.3 and similar to 3.5 eV, respectively. Subsequently, a p-BiOCl/n-ZnO heterostructural photodetector is constructed after a facile mechanical bonding and post annealing process. At -5 V bias, the photocurrent of the device under 350 nm irradiation is similar to 800 times higher than that in dark, which indicates its strong UV light response characteristic. However, the on/off ratio of In-ZnO-In photodetector is similar to 20 and the Cu-BiOCl-Cu photodetector depicts very weak UV light response. The heterostructure device also shows a short decay time of 0.95 s, which is much shorter than those of the devices fabricated from pure ZnO thin film and BiOCl nanoflakes. The p-BiOCl/n-ZnO heterojunction photodetector provides a promising pathway to multifunctional UV photodetectors with fast response, high signal-to-noise ratio, and high selectivity.

关键词ZnO thin film BiOCl nanoflakes heterostucture UV photodetector
收录类别EI ; ESCI
语种英语
WOS研究方向Physics
WOS类目Physics, Condensed Matter
WOS记录号WOS:000655287600001
出版者IOP PUBLISHING LTD
原始文献类型Article
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文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/126817
专题物质科学与技术学院_PI研究组_谢琎组
通讯作者Fang, Xiaosheng
作者单位
1.Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China;
2.ShanghaiTech Univ, Dept Phys Sci & Technol, Shanghai 200433, Peoples R China
第一作者单位上海科技大学
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GB/T 7714
Su, Longxing,Ouyang, Weixin,Fang, Xiaosheng. Facile fabrication of heterostructure with p-BiOCl nanoflakes and n-ZnO thin film for UV photodetectors[J]. JOURNAL OF SEMICONDUCTORS,2021,42(5).
APA Su, Longxing,Ouyang, Weixin,&Fang, Xiaosheng.(2021).Facile fabrication of heterostructure with p-BiOCl nanoflakes and n-ZnO thin film for UV photodetectors.JOURNAL OF SEMICONDUCTORS,42(5).
MLA Su, Longxing,et al."Facile fabrication of heterostructure with p-BiOCl nanoflakes and n-ZnO thin film for UV photodetectors".JOURNAL OF SEMICONDUCTORS 42.5(2021).
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