The valence band alignment at ultrathin SiO2/Si interfaces

被引:151
作者
Alay, JL [1 ]
Hirose, M [1 ]
机构
[1] HIROSHIMA UNIV,DEPT ELECT ENGN,HIGASHI HIROSHIMA 739,JAPAN
关键词
D O I
10.1063/1.363895
中图分类号
O59 [应用物理学];
学科分类号
摘要
High resolution x-ray photoelectron spectroscopy has been used to determine the valence band alignment at ultrathin SiO2/Si interfaces. In the oxide thickness range 1.6-4.4 nn the constant band-offset values of 4.49 and 4.43 eV have been obtained for the dry SiO2/Si(100) and the wet SiO2/Si(100) interfaces, respectively. The valence band alignment of dry SiO2/Si(111) (4.36 eV) is slightly smaller than the case of the dry SiO2Si(100) interface. (C) 1997 American Institute of Physics.
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页码:1606 / 1608
页数:3
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