Electronic Structures of Well-Aligned Er-Doped ZnO Nanorod Arrays
Authors: Chen, Cheng-Ying; Lai, Kun-Yu; Lo, Jian-Wei; Lin, Chin-An; Chiu, Shu-Hsien; Chao, Yen-Chun; He, Jr-Hau
Source: Journal of Nanoscience and Nanotechnology, Volume 11, Number 12, December 2011 , pp. 10615-10619(5)
Publisher: American Scientific Publishers
Abstract:Electronic structures of well-aligned Er-doped ZnO (ZnO:Er) nanorod arrays (NRAs) synthesized by a solution-based hydrothermal process were characterized by high-resolution transmission electron microscopy (HRTEM) and X-ray absorption fine structure (XAFS). HRTEM and angular dependent X-ray absorption near-edge structure analysis at O K and Zn L 3 edges indicates that the spontaneous polarization is along the  direction. The analysis of Er L 3-edge XAFS demonstrates that the local structure around Er in the ZnO:Er NRAs was transformed from O h to C 4v after annealing.
Document Type: Research Article
Publication date: December 1, 2011
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