Abstract
Longitudinal optical phonon assisted relaxation of excitons involving intersubband transitions is studied in quantum wells. Considering the relaxation of an exciton from a higher subband to a free electron-hole pair in lower subbands by longitudinal optical phonon emission, we calculate the rate of relaxation as a function of exciton density, temperature, and wave vector K-parallel to of the center-of-mass of exciton in quantum wells. The theory is finally applied to GaAs quantum wells and results are compared with experiment.
| Original language | English |
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| Pages (from-to) | 5796-5801 |
| Number of pages | 6 |
| Journal | Journal of Applied Physics |
| Volume | 91 |
| Issue number | 9 |
| DOIs |
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| Publication status | Published - 2002 |