10]//Al2O3 1120]. In the oxygen rich environment, however, another epitaxial relationship, ZnMgO (0001)//Al2O3(0001) and ZnMgO 1010]//Al2O3 1010], is also present in the films, which is suggested to be responsible for the decline of the crystal quality. Compared with pure ZnO films, the UV peak of Zn1-xMgxO alloys shows red-shift from 3.374 to 3.332 eV with increasing oxygen working pressure increasing from 10-4 Pa up to 10 Pa. The difference in red-shifts can be attributed to the decrease of Mg content in the films resulting from the variation of oxygen pressure. A broad UV PL spectrum was observed at 10 K in the films deposited under different pressures and can be decomposed into two recombination processes of excitons, corresponding to the bound and the localized exciton luminescence, respectively. The binding energy of bound excitons in the ZnMgO films is larger than that in pure ZnO and has an increasing trend with increasing oxygen pressure."/>     氧分压对Mg掺杂ZnO薄膜结晶质量和光学特性的影响
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物理学报  2011, Vol. 60 Issue (3): 036804
凝聚物质:结构、力学和热学性质 当期目录| 下期目录| 过刊浏览| 高级检索     
鲍善永, 董武军, 徐兴, 栾田宝, 李杰, 张庆瑜
大连理工大学物理与光电工程学院三束材料改性教育部重点实验室,大连 116024
Influence of oxygen partial pressure on the crystal quality and optical properties of Mg-doped ZnO films
Bao Shan-Yong, Dong Wu-Jun, Xu Xing, Luan Tian-Bao, Li Jie, Zhang Qing-Yu
Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Physics and Opto-electronic Technology, Dalian University of Technology, Dalian 116024, China

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