Excitons in confined systems: from quantum well to bulk behaviour
Physics Letters A, ISSN: 0375-9601, Vol: 168, Issue: 5, Page: 451-459
1992
- 40Citations
- 15Captures
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Article Description
A theoretical study of excitons in CuCl films is presented, which is valid for both L ∼ a B and L ⪢ a B, where L is the well width and a B is the exciton radius. Exciton binding energies and oscillator strengths are calculated, and the effect of the different dielectric constant of the barrier is studied in detail. The oscillator strength as a function of well width is shown to have a minimum at L ∼ 3 a B. The radiative lifetime of free excitons is calculated. For thin wells, thermalization produces a radiative lifetime which is linear in temperature. For wide wells, the lifetime becomes independent of well width and proportional to T32.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/037596019290535T; http://dx.doi.org/10.1016/0375-9601(92)90535-t; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0042370893&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/037596019290535T; https://api.elsevier.com/content/article/PII:037596019290535T?httpAccept=text/xml; https://api.elsevier.com/content/article/PII:037596019290535T?httpAccept=text/plain; http://linkinghub.elsevier.com/retrieve/pii/037596019290535T; http://api.elsevier.com/content/article/PII:037596019290535T?httpAccept=text/xml; http://api.elsevier.com/content/article/PII:037596019290535T?httpAccept=text/plain; http://dx.doi.org/10.1016/0375-9601%2892%2990535-t; https://dx.doi.org/10.1016/0375-9601%2892%2990535-t
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