Glycothermal synthesis and photoluminescence of YAG:Ce3+ nanophosphors

R. Kasuya, T. Isobe, H. Kuma

研究成果: Conference article査読

86 被引用数 (Scopus)

抄録

Y3Al 5O12:Ce3+ (YAG:Ce 3+) nanophosphor powder was synthesized by glycothermal method, where a reaction between aluminum isopropoxide and acetates of yttrium and cerium(III) was induced in 1,4-butylene glycol in autoclave. According to X-ray diffraction profiles, YAG crystal structure was formed after glycothermal treatment at 300 °C for more than 1 h. The aggregation of the primary particles of ∼10 nm diameter was confirmed by TEM observation and dynamic light scattering. The intensity of photoluminescence (PL) due to 5d → 4f transition of Ce3+ increased with increasing the aging time at 300 °C during glycothermal treatment. The inductively coupled plasma atomic emission spectroscopy revealed that the atomic ratio of Ce/(Y + Ce) remained unchanged irrespective of the aging time at 300 °C. Therefore, this suggests that prolonged aging promotes the homogeneous incorporation of Ce 3+ into the interior of particle. Based on the characterization by thermal analysis and infrared absorption spectroscopy, the coordination of 1,4-butylene glycol and acetate on the surface of YAG:Ce3+ nanophosphors possibly plays a significant role in the PL enhancement.

本文言語English
ページ(範囲)820-823
ページ数4
ジャーナルJournal of Alloys and Compounds
408-412
DOI
出版ステータスPublished - 2006 2 9
イベントProceedings of the Rare Earths'04 in Nara, Japan -
継続期間: 2004 11 72004 11 12

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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