Ab initio study of birefringent porous silicon

被引：3

作者：

Bonder, Y ^{[1
]}

Wang, CM ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2005年 / 202卷 / 08期

关键词：

D O I：

10.1002/pssa.200461181

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Optical properties of bireffingent porous-silicon layers are studied within the density functional theory. Starting from a (110)-oriented supercell of 32 silicon atoms, elliptic columns of atoms in [100] and [010] directions are removed. The dangling bonds are saturated with hydrogen atoms. The results show an inplane anisotropy in the refractive index and in the absorption coefficient, i.e., a birefringence response. The difference Delta n defined as n([1 (1) over bar0]) - n([001]) is compared with experimental data and a good agreement is observed. Also, the calculated absorption coefficients behave very closely to the measured ones. (c) 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：1552 / 1556

页数：5

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