Er-Yb Codoped Ferroelectrics for Controlling Visible Upconversion Emissions

被引：34

作者：

Huang, Tung-Ching ^{[1
,2
]}

Hsieh, Wen-Feng ^{[1
,2
]}

机构：

[1] Natl Chiao Tung Univ, Dept Photon, Hsinchu 30050, Taiwan

[2] Natl Chiao Tung Univ, Inst Electroopt, Hsinchu 30050, Taiwan

来源：

JOURNAL OF FLUORESCENCE | 2009年 / 19卷 / 03期

关键词：

Upconversion; Fluorescence; Rare-earth; X-ray diffraction; Crystal structure; ENERGY-LEVELS; LUMINESCENCE; DEPENDENCE; PHOSPHORS; SPECTRA; SIZE;

D O I：

10.1007/s10895-008-0440-0

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Under a 980 nm laser pumping, quenching of green upconversion (UC) emission accompanied with enhancement of red UC emission observed was dominated by the energy back-transfer (EBT) process in Er3+ and Yb3+ codoped PbTiO3, BaTiO3, and SrTiO3 polycrystalline powders. The efficiency of the EBT process depends not only on Yb3+ concentration but also on level match of the doped Er3+ and Yb3+ ions caused by the crystal fields with different symmetries. Our UC emission spectra and X-ray diffraction confirm that the centrosymmetric crystal field arising from reducing tetragonality causes level match of transition S-4(3/2) -> (4) I-13/2 of Er3+ and F-2(7/2) -> (2) F-5/2 of Yb3+. This level match is responsible for enhancing red UC emission.

引用

页码：511 / 516

页数：6

共 20 条

[1] ENERGY UPCONVERSION IN (YB, HO) AND (YB, TM) DOPED FLUOROHAFNATE GLASSES [J].

CHAMARRO, MA ;

CASES, R .

JOURNAL OF LUMINESCENCE, 1988, 42 (05) :267-274

[2] OPTICAL-SPECTRA, ENERGY-LEVELS, AND CRYSTAL-FIELD ANALYSIS OF TRIPOSITIVE RARE-EARTH IONS IN Y2O3 .1. KRAMERS IONS IN C2 SITES [J].

CHANG, NC ;

GRUBER, JB ;

LEAVITT, RP ;

MORRISON, CA .

JOURNAL OF CHEMICAL PHYSICS, 1982, 76 (08) :3877-3889

[3] Bright white upconversion luminescence in rare-earth-ion-doped Y2O3 nanocrystals [J].

Chen, G. Y. ;

Liu, Y. ;

Zhang, Y. G. ;

Somesfalean, G. ;

Zhang, Z. G. ;

Sun, Q. ;

Wang, F. P. .

APPLIED PHYSICS LETTERS, 2007, 91 (13)

[4] Two-color upconversion in rare-earth-ion-doped ZrO2 nanocrystals [J].

Chen, G. Y. ;

Zhang, Y. G. ;

Somesfalean, G. ;

Zhang, Z. G. ;

Sun, Q. ;

Wang, F. P. .

APPLIED PHYSICS LETTERS, 2006, 89 (16)

[5] Upconversion mechanism for two-color emission in rare-earth-ion-doped ZrO2 nanocrystals [J].

Chen, Guanying ;

Somesfalean, Gabriel ;

Liu, Yan ;

Zhang, Zhiguo ;

Sun, Qiu ;

Wang, Fuping .

PHYSICAL REVIEW B, 2007, 75 (19)

[6] A three-color, solid-state, three-dimensional display [J].

Downing, E ;

Hesselink, L ;

Ralston, J ;

Macfarlane, R .

SCIENCE, 1996, 273 (5279) :1185-1189

[7] Spectra and energy levels of Er3+(4f11) in NaBi(WO4)2 [J].

Gruber, JB ;

Sardar, DK ;

Russell, CC ;

Yow, RM ;

Zandi, B ;

Kokanyan, EP .

JOURNAL OF APPLIED PHYSICS, 2003, 94 (11) :7128-7135

[8] Modeling the crystal-field splitting of energy levels of Er3+(4f11) in charge-compensated sites of KPb2Cl5 [J].

Gruber, John B. ;

Yow, Raylon M. ;

Nijjar, Anmol S. ;

Russell, Charles C., III ;

Sardar, Dhiraj K. ;

Zandi, Bahram ;

Burger, Arnold ;

Roy, Utpal N. .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (04)

[9] Semiconductor-laser-pumped high-power upconversion laser [J].

Heumann, E ;

Bär, S ;

Rademaker, K ;

Huber, G ;

Butterworth, S ;

Diening, A ;

Seelert, W .

APPLIED PHYSICS LETTERS, 2006, 88 (06)

[10] Crystal growth, upconversion, and infrared emission properties of Er 3+-doped KPb2Br5 [J].

Hömmerich, U ;

Nyein, EE ;

Trivedi, SB .

JOURNAL OF LUMINESCENCE, 2005, 113 (1-2) :100-108

← 1 2 →