Development of co-doped phosphor using oxyhydroxide as a host material

• Project/Area Number: 24560827
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Kobe University
• Principal Investigator: SAMATA Hiroaki 神戸大学, 海事科学研究科(研究院), 教授 (90265554)
• Co-Investigator(Kenkyū-buntansha): NAGATA Yujiro 青山学院大学, 理工学部, 教授 (90146308) ; OZAWA Tadashi 独立行政法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 主任研究員 (90450288)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 結晶成長 / オキシ水酸化物 / 光物性 / 波長変換

Outline of Final Research Achievements

Crystals of co-doped lanthanide oxyhydroxide were synthesized by the method we had developed and their crystallographic and luminescence properties were characterized. The luminescence color under ultraviolet irradiation shifted with the composition change including the yellow region and the emission intensity under specific irradiation increased significantly by co-doping. These materials are considered good representatives of new phosphors for unique applications. Moreover, co-doped oxides crystals were synthesized by the same method as oxyhydroxide crystals and their infrared to visible upconversion luminescence properties were investigated.

Research Products

• [Journal Article] Van Vleck paramagnetism of europium oxyhydroxide (2015)
  • Author(s): Hiroaki Samata, Naoki Wada, Tadashi C. Ozawa
  • Journal Title: Journal of Rare Earths Volume: 33 Issue: 2 Pages: 177-181
  • DOI: 10.1016/s1002-0721(14)60399-9
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Yellow luminescence of co-doped gadolinium oxyhydroxide (2015)
  • Author(s): Hiroaki Samata, Shungo Imanaka, Masashi Hanioka, Tadashi C. Ozawa
  • Journal Title: Journal of Rare Earths Volume: 未定
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Synthesis and fluorescence quantum yield of Gd1-xEuxOOH crystals (2014)
  • Author(s): Hiroaki Samata, Daisuke Itakura, Shungo Imanaka, Tadashi C. Ozawa
  • Journal Title: Journal of Materials Science and Chemical Engineering Volume: 2 Issue: 03 Pages: 23-29
  • DOI: 10.4236/msce.2014.23003
  • NAID: 120005621891
  • Peer Reviewed
• [Journal Article] The role of 3d electrons in the appearance of ferromagnetism in the antiferromagnetic Ru2MnGe Heusler compound: a magnetic Compton scattering study (2012)
  • Author(s): S Mizusaki, T Ohnishi, A Douzono, M Hirose, Y Nagata, M Itou, Y Sakurai, T C Ozawa, H Samata, Y Noro
  • Journal Title: Journal of Physics: Condensed Matter Volume: Vol.24 Issue: 25 Pages: 255601-255601
  • DOI: 10.1088/0953-8984/24/25/255601
  • Peer Reviewed
• [Presentation] Gd2O3: Yb3+, Er3+ の下方変換発光におけるエネルギー伝達機構 (2015)
  • Author(s): 植田史郎，有本聖吾，佐俣博章，小澤忠司
  • Organizer: 第62回応用物理学会春季学術講演会
  • Place of Presentation: 東海大学湘南キャンパス
  • Year and Date: 2015-03-13
• [Presentation] Gd2O3 : Er3+, Yb3+, Li+ のアップコンバージョン特性 (2015)
  • Author(s): 埴岡正史，有本聖吾，佐俣博章，小澤忠司
  • Organizer: 第62回応用物理学会春季学術講演会
  • Place of Presentation: 東海大学湘南キャンパス
  • Year and Date: 2015-03-13
• [Presentation] 熱電変換モジュール用Mn系酸化物の電気化学的結晶合成 (2014)
  • Author(s): 庄野里佳子，佐俣博章
  • Organizer: 第11回日本熱電学会学術講演会
  • Place of Presentation: 物質・材料研究機構千現地区
  • Year and Date: 2014-09-29 – 2014-09-30
• [Presentation] ランタノイドのオキシ水酸化物のVan Vleck常磁性 (2014)
  • Author(s): 和田直樹，佐俣博章
  • Organizer: 第38回日本磁気学会学術講演会
  • Place of Presentation: 慶應義塾大学日吉キャンパス
  • Year and Date: 2014-09-03
• [Presentation] EuOOH の Van Vleck 常磁性 (2013)
  • Author(s): 佐俣博章，和田直樹，水崎壮一郎，永田勇二郎，小澤忠司
  • Organizer: 日本物理学会
  • Place of Presentation: 広島大学
• [Presentation] GdOOH をホスト相とした同時置換型結晶の蛍光特性
  • Author(s): 今中俊吾，有本聖吾，佐俣博章，小澤忠司
  • Organizer: 日本物理学会
  • Place of Presentation: 徳島大学常三島キャンパス
• [Presentation] Gd2O3: Tb3+, Yb3+ のアップコンバージョン特性
  • Author(s): 有本聖吾，今中俊吾，川尻庸資，植田史郎，佐俣博章，小澤忠司
  • Organizer: 応用物理学会
  • Place of Presentation: 青山学院大学相模原キャンパス