Journal
CHEMISTRY OF MATERIALS
Volume 22, Issue 4, Pages 1437-1444Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm902516f
Keywords
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Funding
- NSF
- NIH
- China Scholarship Council [[2007]3020]
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A new approach for synthesis of high quality core/shell nanocrystals, thermal-cycling coupled single precursor (TC-SP), was developed. It was applied for the synthesis of high efficiency, good color purity, nearly monodisperse, alloying-free, and stable CdS/ZnS core/shell nanocrystals with their emission peak tunable between 375 and 475 nm. A comparison study on TC-SP versus the classic successive ionic layer adsorption and reaction (SILAR), both in one pot, revealed that, although the reaction temperature was significantly reduced and the procedure was simplified for TC-SP, the overall quality of the CdS/ZnS core/shell nanocrystals yielded by TC-SP was found to be superior. A quantitative chemical etching method was developed for determining the radial distribution of elements in bandgap/composition engineered nanocrystals.
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