Multi Color Emission in Quantum Dot-Quantum Well Semiconductor Heteronanocrystals |
| R. Kostić and D. Stojanović
University of Belgrade, Institute of Physics, Center for Solid State Physics and New Materials, P.O. Box 68, 11080 Belgrade, Serbia |
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| We present calculation results of multi color spontaneous emission from quantum dot quantum well semiconductor heteronanocrystals. Our theoretical results explain experimental results of onion like spherical system similar to: CdSe (core), ZnS (shell), CdSe (shell) spherical quantum dots surrounded by ZnS. We demonstrate influence of shell thickness to exciton localization in distinct layers of heteronanocrystals. Multi color emission of such heterosystem is determined by l=0, n=1 state localization in CdSe core and by l=0, n=2 state localization in CdSe shell. |
| DOI: 10.12693/APhysPolA.116.598 PACS numbers: 73.21.La, 78.67.Bf |