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https://hdl.handle.net/2440/95824
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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 1932-7455 |
Statement of Responsibility: | 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 |
Published version: | http://dx.doi.org/10.1021/jp304075g |
Appears in Collections: | Aurora harvest 3 Chemical Engineering publications |
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