Exciton recombination mechanism and binding energies in MOCVD-grown Zn1−x Cd x Se−ZnSe single quantum wells
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We report here on the study of the optical properties of ZnCdSe−ZnSe quantum structures elaborated by metalorganic chemical vapour deposition (MOCVD). The band structure is experimentally investigated by means of photoluminescence and photoreflectance. We have computed the exciton binding energies for heavy- and light-hole excitons in the context of a self-consistent two-parameter trial function. As a complement, we study the temperature dependence of the photoluminescence intensity under both direct and indirect photoexcitation in graded-index separate confinement heterostructures based on these materials.
PACS 71.35Excitons and related phenomena (including electron-hole drops)
PACS 78.66Optical properties of thin films surfaces and layer structures (superlattices, heterojunctions and multilayers)
PACS 01.30.CcConference proceedings
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