OPTICAL DETERMINATION OF CARRIER CONCENTRATION AND MOBILITY IN P-BULK AND N-BULK GASB BY INFRARED REFLECTIVITY SPECTRAL-ANALYSIS

被引：22

作者：

MEZERREG, A ^{[1
]}

LLINARES, C ^{[1
]}

MONTANER, A ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,CNRS,DYNAM PHASES CONDENSEES GRP 391,F-34095 MONTPELLIER,FRANCE

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1992年 / 169卷 / 01期

关键词：

D O I：

10.1002/pssb.2221690115

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Infrared reflectivity measurements are made on both, n and p bulk GaSb at 300 K to determine carrier concentration and mobility of the material by using a least-square fit on a non-linear model to experimental data after their transfer from spectrometer to a compatible computer in ASCII code. For n-type GaSb a method is proposed for calculating density and mobility of carriers from plasma frequency and carrier scattering time given by the fit, taking into account contributions of both, GAMMA and L band electrons to conductivity. Good agreement is obtained between density and mobility given by reflectivity and those given by Hall measurements for density range 1.2 x 10(17) to 3 x 10(18) cm-3.

引用

页码：121 / 130

页数：10

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