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Photoluminescence characteristics of synthesized copper doped Cd1− xZn xS quantum dots.
- Source :
- Journal of Materials Science: Materials in Electronics; Dec2009, Vol. 20 Issue 12, p1178-1181, 4p, 2 Diagrams, 1 Chart, 2 Graphs
- Publication Year :
- 2009
-
Abstract
- Free standing powders of copper-doped Cd<subscript>1− x</subscript>Zn<subscript> x</subscript>S (0 ≤ x ≤ 0.5) quantum dots (QDs) were synthesized using a simple chemical co-precipitation method. The copper concentration was varied from 0.01 to 10 at. wt% of Cd<superscript>2+</superscript>. X-ray diffraction and transmission electron microscope were used for crystallographic and morphological analyzes. Room temperature time resolved luminescence spectra were recorded using high peak power, pulsed N<subscript>2</subscript>-laser excitation. Decay time values for bluish green and yellow emission have been calculated from recorded luminescence decay curves. Decay time dependence on Cu<superscript>2+</superscript> and Zn<superscript>2+</superscript> concentrations have been studied in detail. These QDs will have wide applications as nanophosphors, solar cells, photocatalysts and chemical sensors. [ABSTRACT FROM AUTHOR]
- Subjects :
- PHOTOLUMINESCENCE
COPPER
X-ray diffraction
QUANTUM dots
SPECTRUM analysis
Subjects
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 20
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 44606816
- Full Text :
- https://doi.org/10.1007/s10854-008-9847-2