Abstract
CdS quantum dots have been prepared by chemical method. The X-ray diffraction results indicated the formation of CdS nanoparticles
with hexagonal phase and grain size 2.5 nm. The HRTEM analysis reveals the formation of CdS quantum dots with an average grain
size of ~2.5 nm. The X-ray photoelectron spectroscopy spectra exhibit the 3d
5/2 and 3d
3/2 peaks corresponding to cadmium and the S2p
3/2 peak corresponding to sulphur. Optical studies by UV–vis spectroscopy show a blue shifted absorption at 471 nm because of
the quantum confined excitonic absorption. The photoluminescence spectra of CdS exhibited a broad green emission band centred
at around 494 nm.
with hexagonal phase and grain size 2.5 nm. The HRTEM analysis reveals the formation of CdS quantum dots with an average grain
size of ~2.5 nm. The X-ray photoelectron spectroscopy spectra exhibit the 3d
5/2 and 3d
3/2 peaks corresponding to cadmium and the S2p
3/2 peak corresponding to sulphur. Optical studies by UV–vis spectroscopy show a blue shifted absorption at 471 nm because of
the quantum confined excitonic absorption. The photoluminescence spectra of CdS exhibited a broad green emission band centred
at around 494 nm.
- Content Type Journal Article
- DOI 10.1007/s10853-010-4333-7
- Authors
- M. Thambidurai, Coimbatore Institute of Technology Department of Physics Coimbatore India
- N. Muthukumarasamy, Coimbatore Institute of Technology Department of Physics Coimbatore India
- S. Agilan, Coimbatore Institute of Technology Department of Physics Coimbatore India
- N. Murugan, Coimbatore Institute of Technology Department of Mechanical Engineering Coimbatore India
- S. Vasantha, Coimbatore Institute of Technology Department of Physics Coimbatore India
- R. Balasundaraprabhu, PSG College of Technology Department of Physics Coimbatore India
- T. S. Senthil, Erode Sengunthar Engineering College Department of Physics Erode India
- Journal Journal of Materials Science
- Online ISSN 1573-4803
- Print ISSN 0022-2461
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