Comparison between MgGa2O4:Mn2+ and ZnGa2O4:Mn2+ nanophosphors synthesized by glycothermal method

M. Osada, M. Takesada, T. Isobe

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

MgGa2O4:Mn2+ (MGM) and ZnGa 2O4:Mn2+ (ZGM) nanophosphors were synthesized in 1,4-butanediol by glycothermal method at 300°C for 2h. The optimum photoluminescence (PL) intensity of MGM at 0.5 mol% Mn is higher than that of ZGM at 3.0 mol% Mn. We discuss this reason from several points of view. Transmission electron microscopy reveals that the particle size of MGM is smaller than that of ZGM. The X-ray diffraction peaks of MGM are broader than those of ZGM. These results cannot explain the higher PL intensity of MGM. The electron paramagnetic resonance spectroscopy and the PL decay analysis reveal that the homogeneity of Mn2+ ions in MGM is higher than that of ZGM, resulting in the more efficient PL process for MGM. The high homogeneity of Mn2+ ions is possibly attributed to the formation of MGM from the low-crystallized glycoxide precursor with a homogeneous mixture of different metallic ions. In contrast, ZGM could be formed by the crystallization of ZnGa2O4, followed by the incorporation of Mn2+ ions into ZnGa2O4.

本文言語English
ホスト出版物のタイトルECS Transactions - Physics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors
ページ75-80
ページ数6
31
出版ステータスPublished - 2009 11 25
イベントPhysics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors - 214th ECS Meeting - Honolulu, HI, United States
継続期間: 2008 10 122008 10 17

出版物シリーズ

名前ECS Transactions
番号31
16
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Other

OtherPhysics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors - 214th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period08/10/1208/10/17

ASJC Scopus subject areas

  • Engineering(all)

フィンガープリント 「Comparison between MgGa<sub>2</sub>O<sub>4</sub>:Mn<sup>2+</sup> and ZnGa<sub>2</sub>O<sub>4</sub>:Mn<sup>2+</sup> nanophosphors synthesized by glycothermal method」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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