OPTICAL-ABSORPTION COEFFICIENT AND NONRADIATIVE QUANTUM EFFICIENCY PHOTOPYROELECTRIC SPECTRA OF PURE CRYSTAL SILICON FROM A SINGLE MODULATION FREQUENCY

被引:7
作者
CHRISTOFIDES, C [1 ]
ENGEL, A [1 ]
MANDELIS, A [1 ]
机构
[1] UNIV TORONTO,ONTARIO LASER & LIGHTWAVE RES CTR,TORONTO M5S 1A4,ONTARIO,CANADA
基金
加拿大自然科学与工程研究理事会;
关键词
D O I
10.1080/00150199108014774
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this work we present and analyze photopyroelectrie experimental data obtained for pure crystalline silicon by a novel, compensating differential photopyroelectric spectrometer. The measurements were performed as a function of wavelength (1000-1400 nm) and modulation frequency (15 to 275 Hz). The experimental results will be discussed in the light of an existing photopyroelectric model and in terms of well established semiconductor silicon physics. We illustrate, for the first time, the possibility of extracting the optical-absorption-coefficient and the non-radiative quantum efficiency spectra self-con-sistently, by using only one experimental photopyroelectric spectrum at a single modulation frequency. © 1991, Taylor & Francis Group, LLC. All rights reserved.
引用
收藏
页码:411 / 424
页数:14
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