Ultra-thin zinc oxide film on Mo(100) |
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Authors: | Kefei Zheng Mingshan Xue Donghui Guo Shuang Liu EG Wang |
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Affiliation: | Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China |
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Abstract: | Zinc oxide films on a single crystal Mo(100) substrate were fabricated by annealing the pre-deposited metal Zn films in 10− 5-10− 4 Pa O2 ambience at 300-525 K, and were characterized by in situ Auger electron spectroscopy, electron energy loss spectroscopy, low energy electron diffraction and high-resolution electron energy loss spectroscopy. The results show that the atomic ratio of oxygen to zinc in zinc oxide film is significantly dependent on sample annealing temperature and O2 pressure. A stoichiometric zinc oxide film has been obtained under ∼10− 4 Pa O2 at about 400 K. A redshift of Fuchs-Kliewer phonon energy correlated with surface oxygen deficiency is observed. |
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Keywords: | 79 20 Fv 79 20 Uv 82 30 Cf 81 65 Mq |
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