Free excitons and optical spectra of semiconductors

✍ Scribed by D. Auvergne; J. Camassel

• Publisher: John Wiley and Sons
• Year: 1971
• Tongue: English
• Weight: 329 KB
• Volume: 44
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2220440227

✦ Synopsis

Abstract

It is shown, that the excitonic wave functions exhibit a discontinuity at the transition between free and bound states. In the real case where carriers spend a finite time on excited levels, it is possible to neglect the Coulomb interaction when the two particles have a kinetic energy greater than a few Rydbergs. Using this hypothesis, an absorption curve in good agreement with the experimental results on GaAs is calculated.