title: Combinatorial study of the optimization of Y2O3:Bi,Eu red phosphors.
abstract: 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.
authors: Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
authors: Ting-Shan
authors: TS
authors: Chan
authors: Chia-Chen
authors: CC
authors: Kang
authors: Ru-Shi
authors: RS
authors: Liu
authors: Lei
authors: L
authors: Chen
authors: Xiao-Nan
authors: XN
authors: Liu
authors: Jian-Jun
authors: JJ
authors: Ding
authors: Jun
authors: J
authors: Bao
authors: Chen
authors: C
authors: Gao
mesh_terms: 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*
chemical_list: D005063:Europium; D015019:Yttrium; D001729:Bismuth; C091417:yttria