期刊
JOURNAL OF APPLIED PHYSICS
卷 104, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.2937197
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资金
- Gangwon-Alberta Research Fund
Crystalline Ta2O5 has very rich defect energy levels as compared to the previously known ones. Thermal treatment of Ta2O5 in a reducing atmosphere increases the photoluminescence (PL) intensity of the deep energy levels in the band gap as compared to the shallow ones. Nitrogen doping creates no new defect energy levels, but rather shifts the maximum PL intensity position of the deep energy levels to even deeper states. The doped nitrogen is interpreted to fill the oxygen vacancy at in-plane lattice sites when it is doped to TaO6 octahedron. (C) 2008 American Institute of Physics.
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