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Type: Journal article
Title: Efficient energy transfer and enhanced infrared emission in Er-doped ZnO-SiO₂ composites
Other Titles: Efficient energy transfer and enhanced infrared emission in Er-doped ZnO-SiO(2) composites
Author: Xiao, F.
Chen, R.
Shen, Y.
Dong, Z.
Wang, H.
Zhang, Q.
Sun, H.
Citation: The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter, 2012; 116(24):13458-13462
Publisher: American Chemical Society
Issue Date: 2012
ISSN: 1932-7447
Statement of
F. Xiao, R. Chen, Y. Q. Shen, Z. L. Dong, H. H. Wang, Q. Y. Zhang, and H. D. Sun
Abstract: Intense near-infrared (NIR) emission around 1534 nm has been obtained from ZnO-SiO2:Er3+ composites upon broadband ultraviolet light excitation. Remarkably, enhancement of the NIR emission as much as 20 times was achieved by optimal codoping with Li+ ions. To elucidate the relevant mechanisms, comprehensive spectroscopic measurements have been performed on ZnO-SiO2 composites with and without Er3+ ions doping. Photoluminescence spectroscopy and fluorescence decay dynamics clearly verify the efficient energy transfer from ZnO quantum dots (QDs) to Er3+ ions. Our results have not only demonstrated an efficient approach of color down-conversion but also indicated that ZnO-SiO2:Er3+ composites could be a promising material for optical amplifier using broadband UV pumping.
Rights: © 2012 American Chemical Society
DOI: 10.1021/jp304075g
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Chemical Engineering publications

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