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Preparation of InSb nanocrystals embedded in SiO_2.thin films

chinese {1. Bulletin 1998年第19期43卷 1610-1615页

作者： zhu kaigui 1, shi jianzhong 1, {2. yanfeng 2.and zhang lide 1 1. institute of solid State physics, chinese academy of science, hefei 2.0031,{12. 2. State Key Laboratory of Surface physics, Fudan University, Shanghai 2.0433,{12. institute of {1. State {2. Chinese Academy of Science Hefei China State Key Laboratory of Surface physics Fudan University Shanghai China

InSb nanocrystals embedded in SiO 2.thin films were prepared by rf magnetron cosputtering technique. THe observation by transmission electron microscope showed that InSb nanocrystals dispersed uniformly in SiO-2.matrices. InSb nanocrystals with different sizes can be obtained by changing the annealing condition. The average size of InSb nanocrystals depended on annealing temperature and time, but not on the t 1.3 rules. X-ray photoelectron spectroscopy and X-ray diffraction were also applied to the analyses of the composite thin films.

关键词： InSb nanocrystals radio-frequency sputtering quantum confinement.

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Preparation and optical absorption of InAs nanocrystal-embedded thin films

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chinese {1. Bulletin 1999年第3期44卷 210-214页

作者： jianzhong {1. {2. zhu weiguo Yao Juhui Jia Zhixiang Cheng lide zhang Acad Sinica Inst Solid State Phys Hefei 230031 Peoples R China Suzhou Univ Dept Phys Suzhou 215006 Peoples R China

InAs-SiO2.nanocrystal-embedded films were prepared by using radio-frequency cosputtering. The growth behavior of InAs in the composite film has been studied by a transmission electron microscope. It has been found tha... 详细信息

InAs-SiO2./sub> nanocrystal-embedded films were prepared by using radio-frequency cosputtering. The growth behavior of InAs in the composite film has been studied by a transmission electron microscope. It has been found that with the increasing substrate temperature, InAs in the matrix undergoes transitions from an initial dispersed phase to a fractal structure of the InAs phase, then to nucleation, and finally to grain growth. Large blueshift of the optical absorption edges of the films was observed from the optical absorption spectra. The relationship between the blueshift of optical absorption edge and the average size of the nanocrystals has been explained by the effective-mass approximation.

关键词： nanocrystal-embedded thin films radio-frequency cosputtering optical absorption quantum confinement.

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