Zhang Xuanzhen, Feng Yunhui, Fu Fangbao, Wang Huan
Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Interdisciplinary Health Management Studies, College of Physical Education, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
Polymers (Basel). 2023 Nov 14;15(22):4399. doi: 10.3390/polym15224399.
High-performance ultraviolet photodetectors have important scientific research significance and practical application value, which has been the focus of researchers. In this work, we have constructed a highly photosensitive UV photodetector with a unique "sandwich" structure, which was mainly composed of two layers of ZnO nanosheet arrays and one layer of polyaniline (PANI). The results showed that the UV current of ZnO/PANI devices was 100 times higher than that of pure ZnO devices under the same UV irradiation time. At a 365 nm wavelength, the device had excellent photocurrent responsiveness and photoconductivity. This high performance was attributed to the large specific surface area of ZnO nanosheets and the p-n junction formed between P-type PANI nano-porous film and N-type ZnO nanosheets. This provides a solid theoretical basis for the application of ZnO nanosheets in ultraviolet detection, and possesses significance for the development of ultraviolet photodetectors.
高性能紫外光探测器具有重要的科研意义和实际应用价值，一直是研究人员关注的焦点。在这项工作中，我们构建了一种具有独特“三明治”结构的高灵敏度紫外光探测器，其主要由两层ZnO纳米片阵列和一层聚苯胺（PANI）组成。结果表明，在相同的紫外照射时间下，ZnO/PANI器件的紫外电流比纯ZnO器件高100倍。在365nm波长下，该器件具有优异的光电流响应性和光电导性。这种高性能归因于ZnO纳米片的大比表面积以及P型聚苯胺纳米多孔膜与N型ZnO纳米片之间形成的p-n结。这为ZnO纳米片在紫外探测中的应用提供了坚实的理论基础，对紫外光探测器的发展具有重要意义。
