2019年3月
Blue-yellow multicolor phosphor, Eu2+-activated Li3NaSiO4: Excellent thermal stability and quenching mechanism
JOURNAL OF ALLOYS AND COMPOUNDS
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- 巻
- 776
- 号
- 開始ページ
- 1016
- 終了ページ
- 1024
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jallcom.2018.10.299
- 出版者・発行元
- ELSEVIER SCIENCE SA
A multicolor emission phosphor can become a new luminescent material for emitting devices such as LEDs. However, most multicolor emission phosphors require two or more luminescent ions, such as Eu2+/Mn2+ and Eu2+/Tb3+/Mn2+. In this study, novel multicolor phosphor materials Li3NaSiO4:Eu2+ were successfully synthesized using a conventional solid-state reaction. The phosphors showed a unique white color with multicolored blue and yellow emissions under a near-ultraviolet light at 360 nm. Based on this result, there seems to be strong evidence that Eu2+ ions are substituted for two cation sites, NaO(6 )and LiO5. Moreover, Eu2+-doped Li3NaSiO4 phosphors exhibit excellent thermal stability in comparison with Eu2+-activated silicate phosphors owing to the presence of electron traps, which can be activated at high temperatures. (C) 2018 Published by Elsevier B.V.
- リンク情報
- ID情報
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- DOI : 10.1016/j.jallcom.2018.10.299
- ISSN : 0925-8388
- eISSN : 1873-4669
- Web of Science ID : WOS:000453826200116