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Open AccessArticle

CuO/ZnO Heterojunction Nanorod Arrays Prepared by Photochemical Method with Improved UV Detecting Performance

1
International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
2
Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, Anhui, China
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Symbiosis Center for Nanoscience Center and Nanotechnology, Symbiosis International, Deemed University, Lavale, Pune 412115, India
4
College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(5), 790; https://doi.org/10.3390/nano9050790
Received: 4 May 2019 / Revised: 18 May 2019 / Accepted: 21 May 2019 / Published: 23 May 2019
CuO/ZnO heterojunction nanorod arrays were synthesized using a facile photochemical deposition strategy. The morphology of CuO was related to the concentration of Cu2+ in the Cu(NO3)2 solution, UV illumination time, and the air annealing temperature. A possible reaction mechanism was proposed. In the photochemical deposition process, the OH was generated in the vicinity of the ZnO nanorod arrays and reacted with Cu2+ and NO3 in the solution to form Cu2(NO3)(OH)3/ZnO heterojunction nanorod arrays firstly, which were converted into CuO/ZnO heterojunction nanorod arrays completely after air annealing at a low temperature. The fabricated CuO/ZnO heterojunction nanorod arrays exhibits a well-defined rectifying characteristic and an improved photo-response performance compared with pure ZnO nanorod arrays. View Full-Text
Keywords: CuO/ZnO heterojunction NRs; photochemical deposition; improved UV detecting performance; Cu2(NO3)(OH)3/ZnO precursor CuO/ZnO heterojunction NRs; photochemical deposition; improved UV detecting performance; Cu2(NO3)(OH)3/ZnO precursor
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MDPI and ACS Style

Li, J.; Zhao, T.; M. Shirolkar, M.; Li, M.; Wang, H.; Li, H. CuO/ZnO Heterojunction Nanorod Arrays Prepared by Photochemical Method with Improved UV Detecting Performance. Nanomaterials 2019, 9, 790.

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