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Gain and Reflection Spectroscopy and the Present Understanding of the Electron–Hole Plasma in II–VI Compounds
Author(s) -
Bohnert K.,
Schmieder G.,
Klingshirn C.
Publication year - 1980
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220980117
Subject(s) - excitation , plasma , atomic physics , spectroscopy , reflection (computer programming) , electron , electron temperature , electron excitation , excitation temperature , spectral line , recombination , plasma parameters , chemistry , materials science , physics , emission spectrum , quantum mechanics , biochemistry , gene , astronomy , computer science , programming language
The reflection and gain spectra of CdS and ZnO are investigated as a function of excitation intensity and temperature. For the gain spectroscopy the two beam method and the variation of the excitation strip length are used. The results indicate, that an electron–hole plasma is formed under high excitation, preferentially if small excitation spots are used. The electron–hole plasma comes close to its thermal equilibrium only in especially favourable cases. Excitonic recombination processes are predominant, if larger excitation spots are used.