An Abnormal Photoluminescence Enhancement in (Eu,Yb) Co-doped SiO2 Thin Film |
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| Authors: | C L Heng J T Li Z Han P G Yin |
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| Affiliation: | 1. School of Physics and Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, Chinahengcl@bit.edu.cn pgyin@buaa.edu.cn;3. School of Physics and Key Laboratory of Cluster Science of Ministry of Education, Beijing Institute of Technology, Beijing 100081, China;4. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, China |
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| Abstract: | We report on the photoluminescence (PL) properties of europium (Eu) and ytterbium (Yb) co-doped SiO2 thin film. The Eu (both Eu2+ and Eu3+) PL and the Yb3+ PL is co-related under different temperature annealing. However, upon 1100°C anneal, the Eu PL intensity is significantly stronger than other temperatures anneal. Transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray diffraction results, suggest that meta-stable Eu2+-related silicates (EuSiO3) have formed in the oxide as well as the formation of Yb2Si2O7. |
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| Keywords: | Rare earth co-doping down-conversion luminescence silicates |
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