Eu, Dy共ドープSrO-Al₂O₃系蛍光体の長残光特性

• 高崎 久子

  京都大学大学院人間・環境学研究科

• 田部 勢津久

  京都大学総合人間学部

• 花田 禎一

  京都大学大学院人間・環境学研究科

書誌事項

タイトル別名

• Long-Lasting Afterglow Characteristics of Eu, Dy Codoped SrO-Al₂O₃ Phosphor
• Eu Dy キョウ ドープ SrO Al2O3ケイ ケイコウタイ ノ チョウ

抄録

By codoping Dy³⁺ into the SrAl₂O₄:Eu²⁺ phosphor, long persistent phosphorescence was observed and its afterglow characteristics were investigated. The excitation wavelength suitable for long persistent phosphorescence was 200-250nm, much shorter than the wavelength of 4f⁷-4f⁶5d absorption of the Eu²⁺ ions, suggesting that the energy levels of electron traps are higher than the 4f⁶5d level. The phosphorescence intensity and its lifetime increased with increasing temperature. The depth of the electron traps was calculated from the Hoogenstraaten's plot of glow curves at about 0.3 and 0.6eV. From the temperature dependence of decay curves, the deeper trap is considered to contribute to the long-lasting afterglow.

収録刊行物

• Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)

  Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) 104 (1208), 322-326, 1996

  公益社団法人 日本セラミックス協会

キーワード

• Long persistent phosphor
• Afterglow
• Thermally stimulated luminescence
• Trap
• Aluminate

詳細情報

• CRID: 1390282680255305472
• NII論文ID: 110002291363
• NII書誌ID: AN10040326
• DOI: 10.2109/jcersj.104.322
• ISSN: 18821022
• ISSN: 09145400
• ISSN: http://id.crossref.org/issn/09145400
• NDL書誌ID: 3947894
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3947894
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1988/104/1208/104_1208_322/_pdf
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  • NDL
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