Issue 3, 2013
From the journal:

Nanoscale

Optical down-conversion in doped ZnSe:Tb3+nanocrystals

Sandip Dasa  and  Krishna C. Mandal*a  

* Corresponding authors

a Department of Electrical Engineering, University of South Carolina, Columbia, South Carolina, USA
E-mail: mandalk@cec.sc.edu
Fax: +1 803 777 8045
Tel: +1 803 777 2722

Abstract

Rare earth (RE) Tb3+-doped high quality ZnSe nanocrystals (NCs) were synthesized by a facile chemical hot-injection method. ZnSe:Tb3+ nanocrystals exhibited broadband absorption below the first excitonic absorption peak. Photoluminescence spectra showed Tb3+ emission lines in the visible spectral window at room temperature when excited by UV radiation below the band-edge of the host ZnSe nanocrystals. Our experimental results indicate optical down-conversion in these Tb3+-doped Zn-chalcogenide nanocrystals via energy migration from host ZnSe to the Tb3+ dopant. The host-dopant energy transfer mechanism for this ZnSe:Tb3+ nanocrystal system is correlated with the emission spectra.

Graphical abstract: Optical down-conversion in doped ZnSe:Tb3+ nanocrystals

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Article information

DOI
https://doi.org/10.1039/C2NR33243D
Article type
Communication
Submitted
18 Oct 2012
Accepted
06 Dec 2012
First published
11 Dec 2012

Nanoscale, 2013,5, 913-915

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Optical down-conversion in doped ZnSe:Tb3+ nanocrystals

S. Das and K. C. Mandal, Nanoscale, 2013, 5, 913 DOI: 10.1039/C2NR33243D

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