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Inventions 2016, 1(1), 3; doi:10.3390/inventions1010003

Synthesis of Ga-Doped ZnO Nanorods by Hydrothermal Method and Their Application to Ultraviolet Photodetector

Department of Electronic Engineering, National Formosa University, Yunlin 632, Taiwan
Institute of Microelectronics and Department of Electrical Engineering, Center for Micro/Nano Science and Technology, Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
Institute of Electro-Optical and Materials Science, National Formosa University, Yunlin 632, Taiwan
Author to whom correspondence should be addressed.
Academic Editor: Chien-Hung Liu
Received: 6 January 2016 / Revised: 3 February 2016 / Accepted: 4 February 2016 / Published: 16 February 2016
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In this study, high-density single crystalline Ga-doped ZnO (GZO) nanorods were grown on glass substrate by the hydrothermal method. The structural and optoelectronic properties of Ga-doped ZnO nanorods were studied. The microstructure of the GZO was studied by scanning electrical microscope (SEM). The structural characteristics of the GZO were measured by X-ray diffraction (XRD). It was found that the peaks related to the wurtzite structure ZnO (100), (002), and (101) diffraction peaks. The (002) peak indicates that the nanorods were preferentially oriented in the c-axis direction. The existence of Ga was examined by energy diffraction spectra (EDS), indicating the Ga atom entered into the ZnO lattice. The optical properties of the GZO were measured by photoluminescence spectra. It was found that all GZO nanorod arrays showed two different emissions, including UV (ultraviolet) and green emissions. GZO nanorod metal-semiconductor-metal (MSM) ultraviolet (UV) photodetectors (PD) were also fabricated. The photo-current and dark-current constant ratio of the fabricated PD was approximately 15.2 when biased at 1 V. View Full-Text
Keywords: Ga doped ZnO nanorod; hydrothermal; photodetector; Ga doped ZnO nanorod; hydrothermal; photodetector;

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Young, S.-J.; Chiou, C.-L.; Liu, Y.-H.; Ji, L.-W. Synthesis of Ga-Doped ZnO Nanorods by Hydrothermal Method and Their Application to Ultraviolet Photodetector. Inventions 2016, 1, 3.

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