Effect of confinement on the lifetimes of shallow impurity states in quantum wells

Ekaterina E. Orlova, Paul Harrison

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The effect of confinement in quantum well on the lifetimes of excited shallow impurity states is theoretically investigated. It is shown that quantum well potential causes a slower asymptotic behavior of the wave functions at large wave vectors (q-3) and may lead to an exponential increase of the transition rates due to interaction with short wavelength (λ ≪aB) acoustic phonons. The model explains experimentally observed reduction of lifetimes of impurity states in quantum wells and allows us to predict the parameters of quantum wells to maximize impurity states lifetimes.

Original languageEnglish
Pages (from-to)5257-5259
Number of pages3
JournalApplied Physics Letters
Volume85
Issue number22
DOIs
Publication statusPublished - 29 Nov 2004
Externally publishedYes

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