Combinatorial study of the optimization of Y2O3:Bi,Eu red phosphors.
The present investigation aims at the synthesis of (Y2-xEuxBiy)O3 red phosphor materials using the combinatorial chemistry method. We developed square-type arrays consisting of 90 compositions to obtain the optimum composition of co-dopants in a Y2O3 host. The optimized composition was found to be (Y2-xEuxBiy)O3 (x = 0.16-0.18, y = 0.08-0.10). The screening of the compositions was investigated by analysis of the emission spectrum under 365 nm UV excitation arising from the energy transfer between Bi3+ and Eu3+ ions. The results of the photoluminescence excited by ultraviolet agree well with the conventional-scale synthesis results, indicating that the combinatorial screening method is fast, reliable, reproducible, and applicable to the study of powder materials with relatively quick calcinations at high synthesis temperatures.
Chan
Ting-Shan
TS
Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
Kang
Chia-Chen
CC
Liu
Ru-Shi
RS
Chen
Lei
L
Liu
Xiao-Nan
XN
Ding
Jian-Jun
JJ
Bao
Jun
J
Gao
Chen
C
D001729:Bismuth / Q000737:chemistry*; D020650:Combinatorial Chemistry Techniques / Q000379:methods*; D018360:Crystallography, X-Ray; D005063:Europium / Q000737:chemistry*; D033362:Powder Diffraction; D012680:Sensitivity and Specificity; D017356:Synchrotrons; D015019:Yttrium / Q000737:chemistry*
D005063:Europium; D015019:Yttrium; D001729:Bismuth; C091417:yttria