Preparation and characterization of nanocrystalline ZrO2:Yb3+, Er3+ up-conversion phosphors

被引：8

作者：

Hyppanen, Iko ^{[1
]}

Holsa, Jorma ^{[1
]}

Kankare, Jouko ^{[1
]}

Lastusaari, Mika ^{[1
]}

Pihlgren, Laura ^{[1
]}

机构：

[1] Univ Turku, Dept Chem, FI-20014 Turku, Finland

来源：

FLUORESCENCE METHODS AND APPLICATIONS: SPECTROSCOPY, IMAGING, AND PROBES | 2008年 / 1130卷

关键词：

zirconium oxide; nanocrystals; combustion; sol-gel; up-conversion luminescence;

D O I：

10.1196/annals.1430.045

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Nanocrystalline up-converting phosphors with zirconium oxide (ZrO2) as the host lattice were prepared with combustion and sol-gel methods. Impurities were analyzed with Fourier transform infrared (FT-IR) spectroscopy. Yb3+ absorption was studied in the wave number region 10,00011,500 cm(-1) at room temperature and at 10 K. The whole-blood absorption was measured in the region 9100-41,600 cm(-1) at room temperature. Up-conversion luminescence was excited at room temperature with an IR-laser at 977 nm. The up-conversion luminescence spectra showed red (650685 nm) and green emission (520-560 nm) due to the F-4(9/2) -> I-4(15/2) and (H-2(11/2), S-4(3/2)) -> 4I(15/2) transitions of Er3+, respectively. The materials prepared with combustion synthesis were found to yield the most efficient up-conversion intensity and the longest luminescence decay.

引用

页码：267 / 271

页数：5

共 13 条

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