Synthesis and upconversion luminescence properties of ZnO-TiO2 containing Ho3+ and Yb3+

被引：5

作者：

Kobwittaya, Krisana ^{[1
]}

Oishi, Yushi ^{[1
]}

Torikai, Toshio ^{[1
]}

Yada, Mitsunori ^{[1
]}

Watari, Takanori ^{[1
]}

Luitel, Hom Nath ^{[2
]}

机构：

[1] Saga Univ, Grad Sch Sci & Engn, Dept Sci & Adv Technol, Saga 8408502, Japan

[2] Toyota Cent Res & Dev Labs Inc, 41-1 Yokomichi, Nagakute, Aichi 4801192, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2017年 / 125卷 / 07期

关键词：

Upconversion; ZnO-TiO2; composite; Holmium; Ytterbium; LANTHANIDE; NANOPARTICLES; NANOCRYSTALS; FLUORESCENCE; TRANSITIONS; EXCITATION; EMISSION; PHOSPHOR; LIGHT; GLASS;

D O I：

10.2109/jcersj2.17006

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ho3+ and Yb3+ co-doped ZnO-TiO2 composites were prepared by conventional solid-state reaction method and their upconversion (UC) luminescence characteristics were evaluated. The effects of ZnO/TiO2 mixing ratio, and Ho3+ and Yb3+ concentrations were investigated. The ZnO-TiO2 composite products fired at 1200 degrees C consisted of Zn2TiO4, TiO2, RE2Ti2O7, and RE2TiO5 (RE = Ho3+ and/or Yb3+) phases. Bright UC emission peaks centered at 542 and 670nm wavelengths from the Ho3+ ions were observed. The UC emission intensity of the product was changed by varying ZnO/TiO2 mixing ratios, Ho3+ and Yb3+ concentrations. The optimum condition for the brightest UC emission was 1ZnO: 1TiO(2) doped with 0.05 mol% Ho3+, 9 mol% Yb3+ fired at 1200 degrees C for 4 h. The pump power dependent studies demonstrated that UC emissions related to the two-photon process and UC mechanisms were suggested and discussed in detail. (C) 2017 The Ceramic Society of Japan. All rights reserved.

引用

页码：559 / 564

页数：6

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