2018年1月1日
Photoluminescence from trivalent-cerium-doped silica glass prepared by sol-gel method with aluminum co-dopant
Journal of Nanophotonics
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- 巻
- 12
- 号
- 1
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1117/1.JNP.12.016008
- 出版者・発行元
- SPIE
Trivalent cerium is an important luminescent center giving light emission in short wavelength region depending on host materials. Sol-gel formed silica glass is an ideal matrix due to its high transparency, robustness, and low-temperature processability, but the emission from cerium in silica matrix is often mixed up with that from defects in the matrix, making it difficult to obtain well-determined characteristics. Bright emission from Ce ions peaking at about 400 nm was observed in sol-gel silica glasses synthesized with aluminum co-dopant. From luminescence decay time, the origin was confirmed to be d-f transition in trivalent Ce. From dependence of emission characteristics and UV absorbance on aluminum concentration, it was found that the co-dopant plays an important role to convert the optically inactive tetravalent ions to emissive trivalent state.
- リンク情報
- ID情報
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- DOI : 10.1117/1.JNP.12.016008
- ISSN : 1934-2608
- SCOPUS ID : 85041463558