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The Electron-Hole plasma in CdS between 5 K and room temperature |
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| Authors: | H -E Swoboda F A Majumder V G Lyssenko C Klingshirn L Banyai |
| Institution: | (1) Physikalisches Institut der Johann Wolfgang Goethe Universität, Robert-Mayer-Strasse 2–4, D-6000 Frankfurt, Federal Republic of Germany;(2) Institut für Theoretische Physik, Robert-Mayer-Strasse 8-10, D-6000 Frankfurt, Federal Republic of Germany;(3) Present address: Institute of Problems of Microelectronics Technology, Academy of Sciences of the USSR, SU-142432 Chernogolovka, USSR |
| Abstract: | We investigate and analyze the time-integrated nonlinear optical behaviour of an electronhole plasma in CdS as a function of the temperature and the exciting intensity. The competition between the temperature dependences of the absorption tail and of the manyparticle effects leads with increasing temperature around 160 K to a turn-over from a red- to a blue-shift of the absorption edge under excitation. The frequency dependence of the absorption for high plasma concentrations is in good agreement with theoretical calculations. |
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