Bright blue phosphors in ZnO-WO3 binary system discovered through combinatorial methodology

被引:45
作者
Hayashi, H
Ishizaka, A
Haemori, M
Koinuma, H
机构
[1] Chiba Univ, Ctr Frontier Elect & Photon, Futaba Elect Mem Fdn, Endowed Res Div,Inage Ku, Chiba 2638522, Japan
[2] Tokyo Inst Technol, Ceram Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
关键词
D O I
10.1063/1.1554767
中图分类号
O59 [应用物理学];
学科分类号
摘要
We screened bright blue phosphor materials for a ZnO-WO3 binary system. The film was deposited by combinatorial pulsed laser deposition at room temperature and then annealed. The film composition changes continuously in a full-range from ZnO to WO3 on a single substrate. We obtained two results from the distribution of blue emission-intensity observed by cathodoluminescence of the film: (1) not only did the film have a W composition of 50 mol % (stoichiometric ZnWO4 as the well-known blue phosphor material) but also the W composition region from 45 to 60 mol % had the most emissive phase, and (2) two emissive phases other than the ZnWO4, which have not been described in the phase diagram, were found in the W composition region from 10 to 20 mol % and from 65 to 75 mol %. (C) 2003 American Institute of Physics.
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页码:1365 / 1367
页数:3
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