期刊
ACS APPLIED ELECTRONIC MATERIALS
卷 5, 期 6, 页码 3224-3231出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaelm.3c00311
关键词
Co3O4; ZnO; photodetector; heterojunction; self-powered
A new bottlebrush nanostructure based on the Co3O4-ZnO PN junction has been fabricated as a highly efficient broadband photodetector capable of operation under zero bias conditions. It shows a reasonable band structure, improved light absorption efficiency, and reduced electron-hole recombination, and exhibits highly efficient detection performance in the UV-visible region. The responsivity, specific detectivity, and response speed of the device are 22.7 mA W-1, 3.14 x 10(12) Jones, and 20/90 ms, respectively.
Self-powered broadband photodetectors operating in theultraviolet-visiblewindow are essential for optical communication, military monitoring,multispectral detection, and environmental monitoring. In this study,a new bottlebrush nanostructure based on the Co3O4-ZnO PN junction is fabricated as an efficient broadband photodetectorcapable of operation under zero bias conditions. This photodetectorhas a reasonable band structure, exhibits improved efficiency of lightabsorption, and features reduced electron-hole recombination.Moreover, the device exhibits highly efficient detection performancein the UV-visible region. The responsivity (R), specific detectivity (D), and response speedof the device were 22.7 mA W-1, 3.14 x 10(12) Jones, and 20/90 ms, respectively. These results suggesta new strategy for fabricating broadband photodetectors based on stable,nontoxic, low-cost metal oxides.
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