標題: Synthesis and Characterization of One-Dimensional Ag-Doped ZnO/Ga-Doped ZnO Coaxial Nanostructure Diodes
作者: Chiu, Hsien-Ming
Chang, Yu-Tsui
Wu, Wen-Wei
Wu, Jenn-Ming
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: zinc oxide;nanostructures;p-n homojunction;diode;MOCVD;binding energy
公開日期: 9-四月-2014
摘要: In the pursuit of high injection current diode nanodevices, entire one-dimensional (1D) ZnO coaxial nanostructures with p-n homojunctions is one of the ideal structures. In this study, we synthesized entire 1D ZnO-based coaxial homojunction diodes with p-type Ag-doped ZnO (SZO) nanostructure shells covering n-type Ga-doped ZnO (GZO) nanopagoda (NPG) cores by a metal organic chemical vapor deposition (MOCVD) technique. The entire ID SZO-GZO and SZO-ZnO coaxial nanostructures exhibit better diode characteristics, such as lower threshold voltage, better rectification ratios, and better ideality factor n, than that reported for either 2D or 2D-1D p-n heterojunction and/or homojunction diodes. The binding energies of Ga and Ag were evaluated by low-temperature and temperature-dependent photoluminescence. In comparison, the SZO-GZO coaxial p-n nanostructures display better diode performance than the SZO-ZnO ones.
URI: http://dx.doi.org/10.1021/am500470y
http://hdl.handle.net/11536/24241
ISSN: 1944-8244
DOI: 10.1021/am500470y
期刊: ACS APPLIED MATERIALS & INTERFACES
Volume: 6
Issue: 7
起始頁: 5183
結束頁: 5191
顯示於類別:期刊論文


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