ZnO/TiO2 Nanorods Heterojunction Ultraviolet Photodetector
2023 Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC)(2023)
摘要
TiO
2
nanorods (NRs) were synthesized on fluorine-doped tin oxide (FTO) glass substrates by typical hydrothermal method, and then ZnO film deposited to form ZnO/TiO
2
NRs heterojunction ultraviolet (UV) photodetector (PD). The ZnO/TiO
2
NRs heterojunction UV PD exhibits a very low dark current, showing more than 3 orders of magnitude photo-to-dark current ratio. Also, the heterojunction UV PD shows a higher responsivity of 0.18A/mW and a larger detectivity of
$\boldsymbol{2.79}\times \boldsymbol{10^{13}}$
Jones at -3V. Furthermore, the heterojunction UV PD shows good stability and repeatability of the photoelectric response.
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关键词
ultraviolet photodetector,TiO2 nanorods,ZnO film,heterojunction
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