INFRARED REAL-TIME-NORMALIZED PHOTOPYROELECTRIC MEASUREMENTS OF CRYSTALLINE GERMANIUM - INSTRUMENTATION AND SPECTROSCOPY

被引：18

作者：

CHRISTOFIDES, C ^{[1
]}

MANDELIS, A ^{[1
]}

GHANDI, K ^{[1
]}

WAGNER, RE ^{[1
]}

机构：

[1] UNIV TORONTO,ONTARIO LASER & LIGHTWAVE RES CTR,TORONTO M5S 1A4,ONTARIO,CANADA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1990年 / 61卷 / 09期

关键词：

D O I：

10.1063/1.1141364

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

An infrared photopyroelectric spectrometer with real-time spectrum normalization capability measurements has been optimized and used for the spectroscopy of crystalline Ge, performed as a function of wavelength (1700-1960 nm) and modulation frequency (0.5 to 400 Hz), to determine the optical absorption and nonradiative quantum efficiency spectra. High-modulation- frequency (thermally thick limit: f > 40 Hz) data yielded the optical absorption-coefficient spectrum, while at low modulation frequency (thermally thin limit: f<15 Hz) the nonradiative quantum efficiency spectrum was obtained self-consistently by substitution of the experimental optical absorption coefficient spectrum to the thermally thin limit photopyroelectric theory. The experimental results will be discussed in the light of an existing photopyroelectric model [A. Mandelis and M. M. Zver, J. Appl. Phys. 57, 4421 (1985)] and in terms of well-established semiconductor germanium physics.

引用

页码：2360 / 2367

页数：8

共 25 条

[1]

ACKERMAN W, 1916, ANN PHYS, V46, P197

[2]

BEERMAN HP, 1967, AM CERAM SOC BULL, V46, P737

[3]

Coufal H., 1987, Photoacoustic and thermal wave phenomena in semiconductors, P149

[4] PHOTOTHERMAL SPECTROSCOPY USING A PYROELECTRIC THIN-FILM DETECTOR [J].

COUFAL, H .

APPLIED PHYSICS LETTERS, 1984, 44 (01) :59-61

[5] PHOTOTHERMAL SPECTROSCOPY OF WEAKLY ABSORBING SAMPLES USING A THERMAL WAVE PHASE-SHIFTER [J].

COUFAL, H .

APPLIED PHYSICS LETTERS, 1984, 45 (05) :516-518

[6]

FOURNIER D, PHOTOACOUSTIC THERMA, P237

[7]

KIREV P, 1975, PHYSICS SEMICONDUCTO, pCH8

[8] NON-RADIATIVE RECOMBINATION PROCESSES AND RELATED PHENOMENA IN GE DOPED AS2SE3 GLASSES [J].

KITAMURA, M ;

OGAWA, T ;

ARAI, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1983, 52 (07) :2561-2570

[9] PHOTOPYROELECTRIC SPECTROSCOPY (P2ES) OF ELECTRONIC DEFECT CENTERS IN CRYSTALLINE N-CDS [J].

MANDELIS, A ;

LO, W ;

WAGNER, RE .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1987, 44 (02) :123-130

[10] PHOTOACOUSTIC-SPECTROSCOPY OF THIN SIO2-FILMS GROWN ON (100) CRYSTALLINE SI SUBSTRATES - A THERMAL INTERFEROMETRIC-TECHNIQUE COMPLEMENTARY TO OPTICAL INTERFEROMETRY [J].

MANDELIS, A ;

SIU, E ;

HO, S .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1984, 33 (03) :153-159

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