By T. M. Rice (auth.), Manfred H. Pilkuhn (eds.)
Read or Download Proceedings of the Twelfth International Conference on the Physics of Semiconductors: July 15 – 19, 1974 Stuttgart PDF
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Extra info for Proceedings of the Twelfth International Conference on the Physics of Semiconductors: July 15 – 19, 1974 Stuttgart
Rice, T. : in Solid State Physics vol. 21 (edited by F. Seitz, D. Turnbull and H. Ehrenreich, Acad. : Phys. , 71, 491 (1947) Landau, L. D. -Chim. ; Franck, E. : Rev. Mod. Phys . 2_, 697 (1968) 33 EXPERIMENTAL ASPECTS OF ELECTRON-HOLE DROPS IN SEMICONDUCTORS M. VOOS Groupe de Physique des Solides~ de l'Ecole Normale Sup~rieure Tour 23, 2 place Jussieu, Paris, France In 1968 Keldysh predicted the occurrence in semiconductors of a "liquid" phase resulting from the condensation of free excitons (FE) into electron-hole drops (EHD).
This interpretation does not explain the decay times of the FE's in Si:B and Si:P, nor does it apply to the case of Si:Li where possibly so the interstitial donor Li complicates the situation. Unfortunately, the excitonic binding energies Em in the complexes are still a problem. They may be defined to be individual for each exciton in the way that the total binding energy of an m-complex with respect to free excitons equals ~Em; or they may be assumed to be identical for all excitons in an m-complex resulting in a total binding energy of mEm.
G. Phillips, Proceedings of the 11th International Conference on the Physics of Semiconductors, Warsaw, 1972 (PWN, Warsawa, 1972), p. 671 .  J. C. Hensel, T. G. Phillips and T. M. Rice, Phys. Rev. Letters~' 227 (1973).  G. A. Thomas, T. G. Phillips, T. M. Rice and J. C. Hensel, Phys. Rev. , 386 (1973).  Ya. Pokrovskii, Phys. Stat. Solidi 11, 385 (1972) quotes an upper limit, D < 1 cm 2 /sec. C. Benoit ~ la Guillaume, M. Voos and F. Salvan, Phys. Rev. Letters 27, 1214 (1971) give D ~ 150 cm 2/sec.