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19 February 2015 Upconversion photoluminescence and EXAFS of Er3+ and Ho3+ codoped with Li+ ion
Yunfeng Bai, Yuxiao Wang, Long Zhou, Yinglin Song
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Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 944913 (2015) https://doi.org/10.1117/12.2074987
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China
Abstract
Infrared-to-visible upconversion emission intensities are investigated in Li+/Er3+, Li+/Ho3+/Yb3+ and Li+/Tm3+/Yb3+ codoped oxide nanocrystals. By introducing Li+ ion, the upconversion emission intensity of rare-earth ions are significantly enhanced comparing with that without the Li+ ion. The local structure around Er3+ and Ho3+ ions are studied by the extended X-ray absorption fine structure spectroscopy. After doping Li+ ion, both the average bond lengths of Er-O and Ho-O are decreased.
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Yunfeng Bai, Yuxiao Wang, Long Zhou, and Yinglin Song "Upconversion photoluminescence and EXAFS of Er3+ and Ho3+ codoped with Li+ ion", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 944913 (19 February 2015); https://doi.org/10.1117/12.2074987
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KEYWORDS
Ions
Nanocrystals
Upconversion
Zinc oxide
Crystals
Doping
Infrared radiation
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