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- Toropov, A.A., et al.
(författare)
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Coexistence of type-I and type-II band lineups in Cd(Te,Se)/ZnSe quantum-dot structures
- 2006
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Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 89:12
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Tidskriftsartikel (refereegranskat)abstract
- The authors report on transmission electron microscopy, cathodoluminescence, and time resolved photoluminescence studies of thin Cd(Te,Se) layers in a ZnSe matrix, grown by molecular beam epitaxy. All observations confirm strain-induced self-assembly of quantum dots (QD's), induced primarily by the 14% lattice mismatch between CdTe and ZnSe. The emission spectrum of the structure is the superposition of a relatively narrow luminescence line originating from CdSe-enriched type-I QD's and a broad band attributed to the emission of an ultrathin ZnTeSe/ZnSe layer with type-II band lineup, formed in between the QD's. © 2006 American Institute of Physics.
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