Isotope effect in Ge: a photoluminescence study

P. Etchegoin, J. Weber, M. Cardona, W. L. Hansen, K. Itoh, E. E. Haller

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


Edge photoluminescence data (0.69-0.75 eV) at low temperatures (T = 1.8 and 4.2 K were obtained in three isotope enriched Ge crystals (M=70.1, 73.95 and 75.62) and a natural one (M=72.59). We observed the energy shifts of the bound exciton, phonon assisted electron-hole liquid and free exciton recombination luminescences as a function of the mean isotope mass. The results are in good agreement with both theoretical estimates using a rigid-ion pseudopotential and some existing experimental information.

Original languageEnglish
Pages (from-to)843-848
Number of pages6
JournalSolid State Communications
Issue number11
Publication statusPublished - 1992 Sept
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


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