Published January 1, 2015
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Bright white up-conversion emission from sol-gel derived Yb3+/Er3+/Tm3+: Y2SiO5 nanocrystalline powders
Creators
- 1. Istanbul Tech Univ, Dept Engn Phys, TR-34469 Istanbul, Turkey
- 2. Marmara Univ, Dept Chem, TR-34722 Istanbul, Turkey
- 3. Ege Univ, Dept Phys, TR-35100 Izmir, Turkey
- 4. Marmara Univ, Dept Met & Mat Engn, TR-34722 Istanbul, Turkey
- 5. Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA
Description
Bright white up conversion emission has been observed in sol gel derived Yb3+/Er3+/Tm3+: Y2SiO5 nanocrystalline powders when excited with the 950 nm emission of a laser diode. Measurements of the sample emission intensity dependence on the pumping power were performed to explain the up conversion mechanism. The CIE chromaticity coordinates (x, y) for white emission in X-2-Y2SiO5 nanocrystalline form were found to be (0.334, 0.332) under 950 nm laser diode excitation. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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