SUCRA(さくら: Saitama University Cyber Repository of Academic Resources)は、埼玉大学に在籍する研究者の学術雑誌論文、紀要論文、科学研究費補助金成果報告書、学位論文、研究発表プレゼン資料などを登録し、広く世界に発信しています。 埼玉大学に在籍する皆様は、著作物をSUCRAを通じて発信することができます。詳しくは「成果物の登録方法」をご覧ください。
Department of Functional Materials, Faculty of Engineering, Saitama University
Department of Functional Materials, Faculty of Engineering, Saitama University
Department of Functional Materials, Faculty of Engineering, Saitama University
Department of Functional Materials, Faculty of Engineering, Saitama University
Mitsubishi Chemical Group, Science and Technology Research Center, Inc.
雑誌名
埼玉大学工学部紀要 第一部 論文集
巻
43
ページ
7 - 12
発行年
2009
年月次
2009
出版者名
埼玉大学工学部
出版者名（別言語）
Faculty of Engineering, Saitama University
抄録
Optical degradation characteristic of Eu-complex is one of the most important problems to solve for practical white light-emitting diodes. Eu-complex generates bright red emission by the ultraviolet (UV) irradiation; however, it is easily decomposed by reacting oxygen and vapor when the UV light is irradiated. Therefore the photoluminescence (PL) intensity was reduced by irradiating UV light. In this paper, we demonstrated the drastic improved long term stability by annealing in an autoclave container compared to a conventional annealing in an electric furnace. By optimizing the concentration of starting solution of sol-gel process and the annealing temperature, the PL intensity change of Eu-complex was reduced. In addition, the PL quantum yield of encapsulated sample was almost same as that of Eu-complex without the encapsulation. The most likely cause is that the dense glass network was formed around Eu-complex during the high pressure annealing. These results indicate the autoclave process is useful technique to improve the optical degradation characteristics, and the practical long term stability will be realized in a near future by optimizing the fabrication condition.
オートクレーブを利用したゾル-ゲルガラス封止Eu錯体の信頼性向上＜論文＞
KY-AN00095842-43-02.pdf
(1.16MB)
SUCRAの概要
