TITLE

Bright blue phosphors in ZnO–WO[sub 3] binary system discovered through combinatorial methodology

AUTHOR(S)
Hayashi, Hideki; Ishizaka, Akitoshi; Haemori, Masamitsu; Koinuma, Hideomi
PUB. DATE
March 2003
SOURCE
Applied Physics Letters;3/3/2003, Vol. 82 Issue 9, p1365
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We screened bright blue phosphor materials for a ZnO-WO[sub 3] 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 WO[sub 3] 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 ZnWO[sub 4] 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 ZnWO[sub 4], 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 %.
ACCESSION #
9176132

 

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