Record Details

Activation of visible up-conversion luminescence in transparent and conducting ZnO:Er:Yb films by laser annealing

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Activation of visible up-conversion luminescence in transparent and conducting ZnO:Er:Yb films by laser annealing
 
Creator LLUSCA, M
LOPEZ-VIDRIER, J
LAUZURICA, S
SANCHEZ-ANIORTE, MI
ANTONY, A
MOLPECERES, C
HERNANDEZ, S
GARRIDO, B
BERTOMEU, J
 
Subject ZNO THIN-FILMS
PHOTOLUMINESCENCE
DEPOSITION
TEMPERATURE
EMISSION
GLASS
Up-conversion
ZnO:Er:Yb
Laser annealing
Transparent conducting oxides
 
Description Transparent and conducting ZnO:Er:Yb thin films with visible up-conversion (660-nm emission under 980-nm excitation) were fabricated by RF magnetron sputtering. The as-deposited films were found to be transparent and conducting and the activation of the Er ions in these films to produce up-conversion luminescence was achieved by different post-deposition annealing treatments in air, vacuum or by laser annealing using a Nd:YVO4 laser. The structural, electrical and optical properties and the up-conversion efficiency of these films were found to be strongly influenced by the annealing method, and a detailed study is reported in this paper. It has been demonstrated that, although the air annealing was the most efficient in terms of up-conversion, laser annealing was the only method capable of activating Er ions while preserving the electrical conductivity of the doped films. It has been shown that a minimum energy was needed in laser annealing to optically activate the rare earth ions in the ZnO host material to produce up-conversion. Up-converting and transparent conducting ZnO:Er:Yb films with an electrical resistivity of 5 x 10(-2) cm and transparency 80% in the visible wavelength range has been achieved by laser annealing. (C) 2015 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2016-01-14T14:25:46Z
2016-01-14T14:25:46Z
2015
 
Type Article
 
Identifier JOURNAL OF LUMINESCENCE, 167,101-105
0022-2313
1872-7883
http://dx.doi.org/10.1016/j.jlumin.2015.06.017
http://dspace.library.iitb.ac.in/jspui/handle/100/17722
 
Language en