Recombination Dynamics of the Enhanced Quantum Efficiency in CdSe/ZnTe/ZnS Type-II Quantum Dots
Resource
JOURNAL OF THE CHINESE CHEMICAL SOCIETY, 57(3B), 534-538
Journal
Journal of the Chinese Chemical Society
Journal Volume
57
Journal Issue
3 B
Pages
534-538
Date Issued
2010
Date
2010
Author(s)
Wang, Chun-Hsiung
Wei, Chih-Ming
Huang, Sheng-Chih
Lai, Chih-Wei
Ho, Mei-Lin
Abstract
Remarkable enhancement of the photoluminescence emission arising from CdSe/ZnTe/ZnS coreshell type-II quantum dots (QDs) has been observed when compared with their CdSe/ZnTe counterparts. Comprehensive studies on the recombination dynamics draw a conclusion that the underlying mechanisms such as reduction of the exciton-phonon coupling strength and surface trapping play key roles for the improvement of optical properties. Our finding is important for the creation of highly efficient optoelectronic devices derived from type-II semiconductor QDs.
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Type
journal article
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