Volume 5, Issue 6 2100202
Research Article

In Situ Assembly of Ordered Hierarchical CuO Microhemisphere Nanowire Arrays for High-Performance Bifunctional Sensing Applications

Tiantian Dai

Tiantian Dai

Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031 China

University of Science and Technology of China, Hefei, 230026 China

Advanced Laser Technology Laboratory of Anhui Province, Hefei, 230037 China

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Zanhong Deng

Zanhong Deng

Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031 China

Advanced Laser Technology Laboratory of Anhui Province, Hefei, 230037 China

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Xiaodong Fang

Corresponding Author

Xiaodong Fang

Sino-German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen, 518118 China

E-mail: [email protected], [email protected], [email protected]

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Huadong Lu

Huadong Lu

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Shanxi University, Taiyuan, 030006 China

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Yong He

Yong He

College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044 China

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Junqing Chang

Junqing Chang

Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031 China

University of Science and Technology of China, Hefei, 230026 China

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Shimao Wang

Shimao Wang

Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031 China

Advanced Laser Technology Laboratory of Anhui Province, Hefei, 230037 China

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Nengwei Zhu

Nengwei Zhu

Sino-German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen, 518118 China

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Liang Li

Corresponding Author

Liang Li

School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou, 215006 China

E-mail: [email protected], [email protected], [email protected]

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Gang Meng

Corresponding Author

Gang Meng

Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031 China

Advanced Laser Technology Laboratory of Anhui Province, Hefei, 230037 China

E-mail: [email protected], [email protected], [email protected]

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First published: 30 April 2021
Citations: 11

Abstract

Seeking a facile approach to directly assemble bridged metal oxide nanowires on substrates with predefined electrodes without the need for complex postsynthesis alignment and/or device procedures will bridge the gap between fundamental research and practical applications for diverse biochemical sensing, electronic, optoelectronic, and energy storage devices. Herein, regularly bridged CuO microhemisphere nanowire arrays (RB-MNAs) are rationally designed on indium tin oxide electrodes via thermal oxidation of ordered Cu microhemisphere arrays obtained by solid-state dewetting of patterned Ag/Cu/Ag films. Both the position and spacing of CuO microhemisphere nanowires can be well controlled by as-used shadow mask and the thickness of Cu film, which allows homogeneous manipulation of the bridging of adjacent nanowires grown from neighboring CuO hemispheres, and thus benefits highly sensitive trimethylamine (TMA) sensors and broad band (UV–visible to infrared) photodetectors. The electrical response of 3.62 toward 100 ppm TMA is comparable to that of state-of-the-art CuO-based sensors. Together with the feasibility of in situ assembly of RB-MNAs device arrays via common lithographic technologies, this work promises commercial device applications of CuO nanowires.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

Research data are not shared.

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