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Quantum Confinement in GaAs Microcrystallites Embedded in SiO2 Thin Film |
SHI Wang-zhou;LIN Kui-xun;LIN Xuan-ying;QI Zhen-zhong1 |
Institute of Material Science, Shantou University, Shantou 515063
1Centre of Information Storage, Shanghai Jiaotong University, Shanghai 200030
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Cite this article: |
SHI Wang-zhou, LIN Kui-xun, LIN Xuan-ying et al 1996 Chin. Phys. Lett. 13 797-800 |
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Abstract Semiconductor GaAs microcrystallites were embedded in SiO2 thin films by magnetron rf cosputtering technique. Structures of the thin films were characterized by transmission electron microscopy, x-ray diffraction and x-ray photoelectron microscopy. Average size of microcrystallites, depending on the substrate temperature during deposition, is 3-10nm. Absorption spectra of the films were measured. Blue shift of absorption edge was observed and discussed according to quantum confinement effect.
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Keywords:
81.15.Cd
61.40.Tv
73.90.+f
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Published: 01 October 1996
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PACS: |
81.15.Cd
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(Deposition by sputtering)
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61.40.Tv
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73.90.+f
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(Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures)
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