Chemical Shift in Optical Reflection Spectra Observed During III-V Semiconductor Metalorganic Chemical Vapor Deposition Growth by Surface Photo-Absorption Method
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概要
- 論文の詳細を見る
Spectral dependence of optical reflection from a growing surface is measured in situ during metalorganic chemical vapor deposition of As-based III-V semiconductors, InAs, GaAs, AlAs and AlGaAs by surface photo-absorption method. When one monolayer of group III atom is deposited on an As-stabilized surface, the spectral dependence of reflectivity change shows a chemical shift in the visible light region. The spectrum is red-shifted in the order of AlAs, AlGaAs, GaAs and InAs. The photon energy when the spectrum curve is rising correlates well with the heat of formation in group III atom-As tetrahedral bond, and is almost independent of the underlying layer composition. This result supports the assumption that the observed reflectivity difference between group III atom surface and As-stabilized surface in the visible light region is mainly caused by the photo-absorption process of the surface III-As chemical bond.
- 社団法人応用物理学会の論文
- 1991-08-15
著者
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HORIKOSHI Yoshiji
NTT Basic Research Laboratories
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KOBAYASHI Naoki
NTT Basic Research Laboratories
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Kobayashi Naoki
Ntt Basic Laboratories Ntt Corporation
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Horikoshi Yoshiji
NTT Basic Reseach Laboratories
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