Citation
A. Lastras-martinez et al., Linear electro-optic photoreflectance spectra of GaAs and CdTe around E-1 and E-1+Delta(1), PHYS ST S-A, 175(1), 1999, pp. 45-50
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
ISSN journal
00318965
→ ACNP
Volume
175
Issue
1
Year of publication
1999
Pages
45 - 50
Database
ISI
SICI code
0031-8965(19990916)175:1<45:LEPSOG>2.0.ZU;2-7
Abstract
We report on the measurement of linear electro-optic (LEG) photoreflectance
(PR) spectra for both GaAs and CdTe (001) crystals. It is found that the a
mplitude of the LEO spectra is directly related to the sample doping level,
while the sign of these spectra is dependent on the conductivity type of t
he sample. GaAs LEO spectral lineshapes, in contrast, are found to be indep
endent of the conductivity type in the 10(15) to 10(17) cm(-3) impurity ran
ge. These facts, along with a precise theoretical understanding of the LEO
spectra, allow for the use of LEG-PR spectroscopy for the characterization
of surface and interface electric fields.