Combustion synthesis and up-conversion luminescence of La2O2S:Er3+,Yb3+ nanophosphors

被引：34

作者：

Hakmeh, Noha ^{[1
]}

Chlique, Christophe ^{[1
]}

Merdrignac-Conanec, Odile ^{[1
]}

Fan, Bo ^{[1
]}

Chevire, Francois ^{[1
]}

Zhang, Xianghua ^{[1
]}

Fan, Xianping ^{[2
]}

Qiao, Xusheng ^{[2
]}

机构：

[1] Univ Rennes 1, UMR CNRS 6226, Equipe Verres & Ceram, F-35042 Rennes, France

[2] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2015年 / 226卷

关键词：

Lanthanum oxysulfide; Combustion synthesis; Luminescence; Rare-earth; Up-conversion; OXYSULFIDE NANOCRYSTALS; LANTHANUM OXYSULFIDE; RED PHOSPHOR; IN-VIVO; LA2O2S; LA; SPECTROSCOPY; PARTICLES; EMISSION; Y2O2S-EU;

D O I：

10.1016/j.jssc.2015.02.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

La2O2S:Er3+,Yb3+ nanocrystalline up-converting phosphors were synthesized by a combustion method at low temperature, using ethanol as pre-ignition fuel and thioacetamide as sulfurizing agent and organic fuel. The phosphors were characterized by powder X-ray diffractometry, scanning electron microscopy, UV/Vis/NIR spectroscopy and fluorescence spectroscopy. Pure and well-crystallized La2O2S: Er3+,Yb3+ nanoparticles, of the order of 50-200 nm, are obtained after a post-treatment in a H2S/N2 flow for 2 h at 1000 degrees C. The efficient energy transfer from Yb3+ to Er3+ results in a strong up-conversion upon excitation at 980 nm. The emission spectra show the intense green emissions corresponding to the (H-2(11/2), S-4(3/2))-> I-4(15/2) transitions and a red emission corresponding to the F-4(9/2)-> I-4(15/2) transition. Additionally, within the investigated co-doping concentrations, no significant concentration quenching effect and back energy transfer from Er3+ to Yb3+ were evidenced. This research highlights the influence of the sulfurization treatment on the purity/crystallinity/morphology of the nanocrystals and the luminescence efficiency. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：255 / 261

页数：7

共 51 条

[1] Downconversion for solar cells in NaYF4:Er, Yb [J].

Aarts, L. ;

van der Ende, B. M. ;

Meijerink, A. .

JOURNAL OF APPLIED PHYSICS, 2009, 106 (02)

[2] Nd3+-ion luminescence in La2O2S and Y2O2S single crystals [J].

Abutalibov, G. I. ;

Guseynov, D. I. ;

Mamedov, A. A. .

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 5, 2009, 6 (05) :1127-1129

[3] NEODYMIUM-ACTIVATED LANTHANUM OXYSULFIDE - NEW HIGH-GAIN LASER MATERIAL [J].

ALVES, RV ;

BUCHANAN, RA ;

WICKERSHEIM, KA ;

YATES, EAC .

JOURNAL OF APPLIED PHYSICS, 1971, 42 (08) :3043-+

[4]

AUZEL F, 1966, CR ACAD SCI B PHYS, V262, P1016

[5] Combustion synthesis of Eu-, Tb- and Tm- doped Ln2O2S (Ln = Y, La, Gd) phosphors [J].

Bang, J ;

Abboudi, M ;

Abrams, B ;

Holloway, PH .

JOURNAL OF LUMINESCENCE, 2004, 106 (3-4) :177-185

[6]

BERAR JF, 1992, NIST SPEC PUBL, V846, P63

[7] ESDS AND ESTIMATED PROBABLE-ERROR OBTAINED IN RIETVELD REFINEMENTS WITH LOCAL CORRELATIONS [J].

BERAR, JF ;

LELANN, P .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1991, 24 :1-5

[8]

Blasse G., 1994, LUMINESCENT MAT, P197

[9] OPTICAL-TRANSITIONS OF ER-3+-LA2O2S AND ER-3+-Y2O2S [J].

BUDDHUDU, S ;

BRYANT, FJ .

JOURNAL OF THE LESS-COMMON METALS, 1989, 147 (02) :213-225

[10] Optical spectroscopy of nanocrystalline cubic Y2O3:Er3+ obtained by combustion synthesis [J].

Capobianco, JA ;

Vetrone, F ;

D'Alesio, T ;

Tessari, G ;

Speghini, A ;

Bettinelli, M .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2000, 2 (14) :3203-3207

← 1 2 3 4 5 6 →