Doping Transition Metal (Mn or Cu) Ions in Semiconductor Nanocrystals

Karan, Niladri S and Sarma, DD and Kadam, RM and Pradhan, Narayan (2010) Doping Transition Metal (Mn or Cu) Ions in Semiconductor Nanocrystals. In: Journal of Physical Chemistry Letters, 1 (19). pp. 2863-2866.

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Abstract

Following growth doping strategy and using dopant oxides nanocrystals as dopant sources, we report here two different transition-metal ions doped in a variety of group II-VI semiconductor nanocrystals. Using manganese oxide and copper oxide nanocrystals as corresponding dopant sources, intense photoluminescence emission over a wide range of wavelength has been observed for different host nanocrystals. Interestingly, this single doping strategy is successful in providing such highly emissive nanocrystals considered here, in contrast with the literature reports that would suggest synthesis strategies to be highly specific to the particular dopant, host, or both. We investigate and discuss the possible mechanism of the doping process, supporting the migration of dopant ions from dopant oxide nanocrystals to host nanocrystals as the most likely scenario.

Item Type:	Journal Article
Publication:	Journal of Physical Chemistry Letters
Publisher:	American Chemical Society
Additional Information:	Copyright of this article belongs to American Chemical Society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	26 Oct 2010 08:56
Last Modified:	26 Oct 2010 08:56
URI:	http://eprints.iisc.ac.in/id/eprint/33423

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