Effects of Initial Surface Reconstruction on Silicon Interface Control Layer Based Passivation of (001) GaAs Surfaces Studied in an Ultrahigh-Vacuum Multichamber System
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概要
- 論文の詳細を見る
In order to understand and to further optimize the silicon interface control layer (Si ICL)-based passivation process for GaAs, the effects of the initial surface reconstruction of GaAs on the microscopic surface structures of the Si ICL and on the macroscopic electronic properties are studied in situ, using an ultrahigh-vacuum (UHV) multi-chamber system. (2×4) and c(4×4) GaAs surfaces were prepared by molecular beam epitaxy (MBE). Surface structures and compositions were studied by UHV scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). Macroscopic electronic properties of the passivated surfaces were investigated by XPS band bending measurements, UHV contactless capacitance-voltage (C-V) measurements and UHV photoluminescence (PL) methods. The Si layer grown on the initially reconstructed c(4×4) surface was found to be more ordered and flatter than that grown on the initially reconstructed (2×4) surface. This difference showed a strong correlation with the macroscopic electronic properties after the Si ICL-based passivation process measured by XPS, UHV contactless C-V and PL techniques. The results indicate the importance of the two-dimensional order on the Si-deposited surfaces for successful passivation.
- 社団法人応用物理学会の論文
- 1999-04-30
著者
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HASEGAWA Hideki
Research Center for Integrated Quantum Electronics (RCIQE), Hokkaido University
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TSURUMI Naohiro
Research Center for Interface Quantum Electronics and Graduate School of Electronics and Information
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Tsurumi Naohiro
Research Center For Interface Quantum Electronics And Graduate School Of Electronics And Information
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MUTOH Morimichi
Research Center for Interface Quantum Electronics and Graduate School of Electronics and Information
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Mutoh Morimichi
Research Center For Interface Quantum Electronics And Graduate School Of Electronics And Information
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Hasegawa Hideki
Research Center for Integrated Quantum Electronics (RCIQE) and Graduate School of Information Science and Technology, Hokkaido University, North 13, West 8, Kita-ku, Sapporo 060-8628, Japan
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