TITLE

Synthesis and spectroscopic study of high quality alloy CdxZn1-xS nanocrystals

AUTHOR(S)
Sadhu, Suparna; Patra, Amitava
PUB. DATE
November 2008
SOURCE
Journal of Chemical Sciences;Nov2008, Vol. 120 Issue 6, p557
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In the present study, we report the synthesis of high quality CdxZn1-xS nanocrystals alloy at 150°C with changing the composition. The shifting of absorption and emission peak in shorter wavelength is obtained with increasing the mole fraction of zinc. The quantum yield (QY) value decreases with increasing the Cd mole fraction and the values are 0·08, 0·13 and 0·40 for Cd0·62Zn0·38S, Cd0·52Zn0·48S and Cd0·31Zn0·69S nanocrystals, respectively after 120 min of reaction. However, the full width at halfmaximum (fwhm) values are 45, 34 and 28 nm and the corresponding quantum yield (QY) values are 0·52, 0·17 and 0·13 for 0·5 mM, 1·5 mM and 3 mM of initial S concentrations, respectively. It is interesting to note that the radiative decay time is dominating with increasing the Cd content. Analysis suggests that the decay dynamics depends on the composition of CdxZn1-xS nanocrystals.
ACCESSION #
35600211

 

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics