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Comparative Consideration of Photoreflectance and Electroreflectance Spectra of Semiconductors (I) Theoretical Relations
Author(s) -
Neumann H.
Publication year - 1992
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170270318
Subject(s) - spectral line , semiconductor , modulation (music) , signal (programming language) , field (mathematics) , chemistry , optics , physics , optoelectronics , quantum mechanics , mathematics , acoustics , computer science , programming language , pure mathematics
Abstract Theoretical relations for photoreflectance and electroreflectance spectra of semiconductors are derived without any restrictions regarding the modulation field. For very low modulation fields it is found that the responses of both types of spectra are directly proportional to each other with the electroreflectance signal just twice as large as the photoreflectance signal. At moderate and high modulation fields the spectra are no longer proportional to each other.