Effect of Residual Stress on Hole Mobility of SOS MOS Devices
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概要
- 論文の詳細を見る
The temperature dependence of hole mobility in the silicon inversion layer and its relation to the valence band structure under residual compressive stress are investigated for MOS devices fabricated on (001) silicon films grown on (1012) sapphire substrates. The mobility increases with approximately T^<-2.14> relationship as temperature decreases. This can be explained by the fact that the fraction of holes in the lower state with high mobility increases with decreasing temperature according to the Fermi-Dirac statistics and surface quantization. Furthermore, density-of-state effective mass is measured to be 0.170〜0.198 m_o for 1μm-thick SOS film doped with boron, which value is much smaller than that of p-type bulk silicon. This smaller effective mass can be ascribed that light hole mass in the ground state becomes dominate under lateral compressive stress in SOS films.
- 社団法人応用物理学会の論文
- 1978-09-05
著者
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Yasuda Yukio
Toshiba Research And Development Center Tokyo Shibaura Electric Co. Ltd.
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KAWAJI Shinji
Department of Physics,Gakushuin University
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Kawaji Shinji
Gakushuin University
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Kawaji Shinji
Department Of Physics And Chemistry Gakushuin University
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Nishi Yoshio
Toshiba Research And Development Center Tokyo Shibaura Electric Co. Ltd.
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ONGA Shinji
Enginerring Design Center, Case Western Reserve University
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HATANAKA Katunori
Department of Physics, Gakushuin University
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Onga Shinji
Enginerring Design Center Case Western Reserve University
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Hatanaka Katunori
Department Of Physics Gakushuin University
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