Stress dependence of electron-hole liquid parameters in silicon |
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Authors: | J Wagner A Forchel R Sauer |
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Institution: | Physikalisches Institut der Universität Stuttgart D-7000 Stuttgart 80, Pfaffenwaldring 57 Federal Republic of Germany |
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Abstract: | The electron-hole liquid recombination luminescence in silicon is studied as a function of stress up to corresponding valence band splittings of 30 meV for <100>- and <111>-stress directions. EHL densities and exchange-correlation energies as obtained from lineshape fits are in general agreement with recent theoretical data. Systematic deviations in detail, however, indicate that - contrary to simplifying theoretical assumptions - a band structure dependence of the exchange and correlation energy Exc has to be taken into account. |
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