Upconversion luminescence in Er3+ doped and Er3+/Yb3+ codoped zirconia and hafnia nanocrystals excited at 980 nm

被引：39

作者：

Gomez, Luis A. ^{[1
]}

Menezes, Leonardo de S. ^{[1
]}

de Araujo, Cid B. ^{[1
]}

Goncalves, Rogeria R. ^{[2
]}

Ribeiro, Sidney J. L. ^{[3
]}

Messaddeq, Younes ^{[3
]}

机构：

[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

[2] FFCLRP USP, Dept Quim, BR-1404090 Ribeirao Preto, SP, Brazil

[3] UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 11期

关键词：

dielectric materials; doping; electron microscopy; erbium; hafnium compounds; impurity absorption spectra; infrared spectra; nanofabrication; nanostructured materials; photoexcitation; photoluminescence; sol-gel processing; X-ray diffraction; ytterbium; zirconium compounds; FLUOROINDATE GLASSES; CRYSTALS; IONS; FILMS;

D O I：

10.1063/1.3428478

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Frequency upconversion (UC) luminescence in nanocrystalline zirconia (ZrO2) and hafnia (HfO2) doped with Er3+ and Yb3+ was studied under continuous-wave excitation at 980 nm. Samples of ZrO2:Er3+, ZrO2:Er3+/Yb3+, and HfO2:Er3+/Yb3+ were prepared by the sol-gel technique and characterized using x-ray diffraction and electron microscopy. A study of the infrared-to-green and infrared-to-red UC processes was performed including the analysis of the spectral and the temporal behavior. The mechanisms contributing to the UC luminescence were identified as excited state absorption and energy transfer among rare-earth ions. (C) 2010 American Institute of Physics. [doi:10.1063/1.3428478]

引用

页数：5

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