標題: Optoelectronic Properties of Single-Crystalline Zn2GeO4 Nanowires
作者: Liao, Chi-Hung
Huang, Chun-Wei
Chen, Jui-Yuan
Chiu, Chung-Hua
Tsai, TzungChuen
Lu, Kuo-Chang
Lu, Ming-Yen
Wu, Wen-Wei
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 17-Apr-2014
摘要: In this work, Zn2GeO4 nanowires (NWs) were successfully synthesized on Si(100) substrates through carbon thermal reduction and a vapor liquid solid method. The NWs were of around 100 nm diameter and high aspect ratio (AR > 150). High-resolution transmission electron microscopy studies indicate that the NWs are single-crystalline with [110] growth direction. Moreover, the atomic resolution high-angle annular dark-field and bright-field images of scanning transmission electron microscopy have distinguished the different elements. They also further identified the structure of Zn2GeO4 and located the positions of the elements. Additionally, we have fabricated devices and measured the electrical properties of a single NW. It is remarkable that individual Zn2GeO4 NW devices exhibited excellent optoelectronic properties with fast switching speed under 254 nm UV illuminations. Furthermore, with short wavelength UV illumination, as we soaked Zn2GeO4 NWs in methyl orange solution, the methyl orange was degraded. Therefore, Zn2GeO4 NWs have potential applications in UV photodetectors and degradation of organic pollutants.
URI: http://dx.doi.org/10.1021/jp500830x
http://hdl.handle.net/11536/24232
ISSN: 1932-7447
DOI: 10.1021/jp500830x
期刊: JOURNAL OF PHYSICAL CHEMISTRY C
Volume: 118
Issue: 15
起始頁: 8194
結束頁: 8199
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