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|Title:||High pressure photoluminescence and Raman investigations of CdSe/ZnS core/shell quantum dots||Authors:||Fan, H.M.
|Issue Date:||2007||Citation:||Fan, H.M., Ni, Z.H., Feng, Y.P., Fan, X.F., Kuo, J.L., Shen, Z.X., Zou, B.S. (2007). High pressure photoluminescence and Raman investigations of CdSe/ZnS core/shell quantum dots. Applied Physics Letters 90 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2430772||Abstract:||Photoluminescence (PL) and Raman spectroscopies of CdSeZnS core/shell quantum dots (QDs) were studied under hydrostatic pressure (0-160 kbars) at room temperature. Two phase transitions, at 69 and 79 kbars, respectively, were observed, which correspond to wurtzite-rocksalt and rocksalt-cinnabar structural transformations. The full width at half maximum of PL peaks was found to decrease anomalously approximately 30% with pressure. These experimental data show significant difference between the CdSeZnS core/shell QDs and simple bare CdSe QDs or bulk CdSe, implying the ZnS shell plays a dominant role in structural stability and electronic state of such system. © 2007 American Institute of Physics.||Source Title:||Applied Physics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/96785||ISSN:||00036951||DOI:||10.1063/1.2430772|
|Appears in Collections:||Staff Publications|
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