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|Title:||Efficient energy transfer and enhanced infrared emission in er-doped ZnO-SiO2 composites||Authors:||Xiao, F.
Wang, H. H.
Zhang, Q. Y.
Sun, H. D.
|Keywords:||DRNTU::Science::Chemistry::Physical chemistry||Issue Date:||2012||Source:||Xiao, F., Chen, R., Shen, Y., Dong, Z. L., Wang, H. H., Zhang, Q. Y., et al. (2012). Efficient energy transfer and enhanced infrared emission in er-doped ZnO-SiO2 composites. The journal of physical chemistry C, 116(24), 13458-13462.||Series/Report no.:||The journal of physical chemistry C||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.||URI:||https://hdl.handle.net/10356/99144
|DOI:||10.1021/jp304075g||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||SPMS Journal Articles|
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