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Chin. Phys. B, 2020, Vol. 29(9): 098504    DOI: 10.1088/1674-1056/aba610

High performance Cu2O film/ZnO nanowires self-powered photodetector by electrochemical deposition

Deshuang Guo(郭德双), Wei Li(李微), Dengkui Wang(王登魁), Bingheng Meng(孟兵恒), Dan Fang(房丹), Zhipeng Wei(魏志鹏)
State Key Laboratory of High Powder Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China
Abstract  Self-powered photodetectors based on nanomaterials have attracted lots of attention for several years due to their various advantages. In this paper, we report a high performance Cu2O/ZnO self-powered photodetector fabricated by using electrochemical deposition. ZnO nanowires arrays grown on indium-tin-oxide glass are immersed in Cu2O film to construct type-Ⅱ band structure. The Cu2O/ZnO photodetector exhibits a responsivity of 0.288 mA/W at 596 nm without bias. Compared with Cu2O photoconductive detector, the responsivity of the Cu2O/ZnO self-powered photodetector is enhanced by about two times at 2 V bias. It is attributed to the high power conversion efficiency and the efficient separation of the photogenerated electron-hole pairs, which are provided by the heterojunction. The outstanding comprehensive performances make the Cu2O film/ZnO nanowires self-powered photodetector have great potential applications.
Keywords:  electrochemical deposition      Cu2O/ZnO      self-powered photodetector      responsivity  
Received:  09 June 2020      Revised:  02 July 2020      Published:  05 September 2020
PACS:  85.60.Dw (Photodiodes; phototransistors; photoresistors)  
  73.40.Lq (Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61704011, 61674021, 11674038, 61574022, and 61904017) and the Innovation Foundation of Changchun University of Science and Technology (Grant No. XQNJJ-2018-18).
Corresponding Authors:  Dengkui Wang, Dan Fang     E-mail:;

Cite this article: 

Deshuang Guo(郭德双), Wei Li(李微), Dengkui Wang(王登魁), Bingheng Meng(孟兵恒), Dan Fang(房丹), Zhipeng Wei(魏志鹏) High performance Cu2O film/ZnO nanowires self-powered photodetector by electrochemical deposition 2020 Chin. Phys. B 29 098504

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