Temporal evolution of capped cadmium sulfide nanoparticles

Kalasad, MN and Rabinal, MK and Mulimani, BG and Avadhani, GS (2008) Temporal evolution of capped cadmium sulfide nanoparticles. In: Semiconductor Science and Technology, 23 . 045009: 1-5.

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Abstract

Cadmium sulfide nanoparticles capped with thioglycolic acid as an organic ligand were synthesized by solution chemistry. Temporal evolution was studied by optical absorption, fluorescence, TEM, FTIR and x-ray diffraction measurements to understand the growth and stability of nanocrystals/ligand composites. The results suggest that besides being a good capping agent, thioglycolic acid also acts as an effective passivating ligand for electronically active surface states of CdS nanoparticles. Such binding quenches surface recombination and improves excitonic (band-to-band) recombination. This makes CdS nanoparticles an attractive material for certain applications wherein surfaces states are to be eliminated.

Item Type:	Journal Article
Publication:	Semiconductor Science and Technology
Publisher:	Institute of Physics
Additional Information:	Copyright of this article belongs to Institute of Physics.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	15 Apr 2008
Last Modified:	19 Sep 2010 04:44
URI:	http://eprints.iisc.ac.in/id/eprint/13735

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