Please use this identifier to cite or link to this item:
|Title:||Composition-tunable ZnxCd1-xSe nanocrystals with high luminescence and stability|
|Authors:||Zhong, X. |
|Citation:||Zhong, X., Han, M., Dong, Z., White, T.J., Knoll, W. (2003-07-16). Composition-tunable ZnxCd1-xSe nanocrystals with high luminescence and stability. Journal of the American Chemical Society 125 (28) : 8589-8594. ScholarBank@NUS Repository. https://doi.org/10.1021/ja035096m|
|Abstract:||High-quality ZnxCd1-xSe nanocrystals have been successfully prepared at high temperature by incorporating stoichiometric amounts of Zn and Se into pre-prepared CdSe nanocrystals. With increasing Zn content, a composition-tunable emission across most of the visible spectrum has been demonstrated by a systematic blue-shift in emission wavelength. The photoluminescence (PL) properties for the obtained ZnxCd1-xSe nanocrystals (PL efficiency of 70 - 85%, fwhm = 22 - 30 nm) are comparable to those for the best reported CdSe-based QDs. In particular, they also have good PL properties in the blue spectral range. Moreover, the alloy nanocrystals can retain their high luminescence (PL efficiency of over 40%) when dispersed in aqueous solutions and maintain a symmetric peak shape and spectral position under rigorous experimental conditions. A rapid alloying process was observed at a temperature higher than "alloying point". The mechanism of the high luminescence efficiency and stability of ZnxCd1-xSe nanocrystals is explored.|
|Source Title:||Journal of the American Chemical Society|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jun 22, 2018
WEB OF SCIENCETM
checked on May 15, 2018
checked on Jun 14, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.