Abstract
The Photoluminescence (PL) intensity is theoretically calculated for a CdSe/ZnS Core – Shell Quantum Dot incorporating WKB approximation. Coating CdSe bare quantum dots with a ZnS layer indicates an enhancement in the PL intensity remarkably with a red-shift in spectra. The PL intensity increases with initial shell growth and then it starts to decrease if outer shell growths continue. Smaller Core – Shell Quantum Dots shows greater PL intensity with more red-sift in PL spectra.
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