Electronic energy transfer between long-range resonance states of 3-mercaptopropionic acid capped CdTe quantum dots in aqueous media

Khatei, Jayakrishna and Sahoo, Sangram Keshari and Rao, Koteswara KSR (2013) Electronic energy transfer between long-range resonance states of 3-mercaptopropionic acid capped CdTe quantum dots in aqueous media. In: Journal of Experimental Nanoscience, 8 (4). pp. 493-499.

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Abstract

We demonstrate electronic energy transfer between resonance states of 2 and 2.8 nm CdTe quantum dots in aqueous media using steady-state photoluminescence spectroscopy without using any external linker molecule. With increasing concentration of larger dots, there is subsequent quenching of luminescence in smaller dots accompanied by the enhancement of luminescence in larger dots. Our experimental evidence suggests that there is long-range resonance energy transfer among electronic excitations, specifically from the electronically confined states of the smaller dots to the higher excited states of the larger dots.

Item Type:	Journal Article
Publication:	Journal of Experimental Nanoscience
Publisher:	Taylor and Francis Ltd
Additional Information:	Copyright of this article belongs to Taylor and Francis Ltd.
Keywords:	Semiconductors; Quantum Dot; Resonance Energy Transfer; Luminescence
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry Division of Physical & Mathematical Sciences > Physics
Date Deposited:	11 Jun 2013 07:53
Last Modified:	11 Jun 2013 07:53
URI:	http://eprints.iisc.ac.in/id/eprint/46641

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