ABSORPTION-SPECTRA OF PERFECT AND IMPERFECT SI/GE SUPERLATTICES

被引：5

作者：

ADDERLEY, BM

TURTON, RJ

JAROS, M

机构：

[1] Department of Physics, University of Newcastle Upon Tyne, Newcastle Upon Tyne

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.49.16622

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a comparative study of the absorption spectra for a series of systems with a 50:50 Si/Ge content. These are as follows: a random alloy, a perfect interface Si5Ge5 superlattice, and the same superlattice with random alloy layers between the volumes of Si and Ge. lt is found that the presence of any random structure reduces the peak absorption (just above the band gap) by an order of magnitude. Evidence is also given that experiment should be able to detect the difference in the absorption coefficient, between structured and random arrangements of atoms.

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页码：16622 / 16631

页数：10

相关论文

共 36 条

[1] IDEAL INTERBAND ABSORPTION-SPECTRA IN AN INDIRECT-GAP-SEMICONDUCTOR QUANTUM-WELL [J].

BASU, PK ;

PAUL, SK .

PHYSICAL REVIEW B, 1992, 46 (20) :13389-13393

[2] NEW OPTICAL-TRANSITIONS IN SI-GE STRAINED SUPERLATTICES [J].

BREY, L ;

TEJEDOR, C .

PHYSICAL REVIEW LETTERS, 1987, 59 (09) :1022-1025

[3]

Butcher P. N., 1990, ELEMENTS NONLINEAR O

[4]

CERDEIRA F, 1991, PHYS REV B, V40, P1361

[5] ROOM-TEMPERATURE OBSERVATION OF PHOTOCURRENT DEPENDENCE ON APPLIED BIAS IN SI1-XGEX/SI MULTIQUANTUM WELLS [J].

CHOWDHURY, AA ;

RASHED, MM ;

MAZIAR, CM ;

MURTAZA, SS ;

CAMPBELL, JC .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1993, 11 (04) :1685-1688

[6] BAND STRUCTURES AND PSEUDOPOTENTIAL FORM FACTORS FOR 14 SEMICONDUCTORS OF DIAMOND AND ZINC-BLENDE STRUCTURES [J].

COHEN, ML ;

BERGSTRESSER, TK .

PHYSICAL REVIEW, 1966, 141 (02) :789-+

[7] STRUCTURAL, COMPOSITIONAL, AND OPTICAL-PROPERTIES OF ULTRATHIN SI/GE SUPERLATTICES [J].

EBERL, K ;

KROTZ, G ;

ZACHAI, R ;

ABSTREITER, G .

JOURNAL DE PHYSIQUE, 1987, 48 (C-5) :329-332

[8]

FLYTZANIS C, 1975, QUANTUM ELECTRONIC A, V1, P154

[9] LOCAL EMPIRICAL PSEUDOPOTENTIAL APPROACH TO THE OPTICAL-PROPERTIES OF SI/GE SUPERLATTICES [J].

FRIEDEL, P ;

HYBERTSEN, MS ;

SCHLUTER, M .

PHYSICAL REVIEW B, 1989, 39 (11) :7974-7977

[10] STRUCTURAL AND ELECTRONIC-PROPERTIES OF EPITAXIAL THIN-LAYER SIN GEN SUPERLATTICES [J].

FROYEN, S ;

WOOD, DM ;

ZUNGER, A .

PHYSICAL REVIEW B, 1988, 37 (12) :6893-6907

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