A rare-earth phosphor containing one-dimensional chains identified through combinatorial methods

被引：414

作者：

Danielson, E ^{[1
]}

Devenney, M ^{[1
]}

Giaquinta, DM ^{[1
]}

Golden, JH ^{[1
]}

Haushalter, RC ^{[1
]}

McFarland, EW ^{[1
]}

Poojary, DM ^{[1
]}

Reaves, CM ^{[1
]}

Weinberg, WH ^{[1
]}

Wu, XD ^{[1
]}

机构：

[1] Symyx Technol, Santa Clara, CA 95051 USA

来源：

SCIENCE | 1998年 / 279卷 / 5352期

关键词：

D O I：

10.1126/science.279.5352.837

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

An unusual luminescent inorganic oxide, Sr,2CeO4,, was identified by parallel screening techniques from within a combinatorial library of more than 25,000 members prepared by automated thin-film synthesis. A bulk sample of single-phase Sr,2CeO4, was prepared, and its structure, determined from powder x-ray diffraction data, reveals one-dimensional chains of edge-sharing CeO6, octahedra, with two terminal oxygen atoms per cerium center, that are isolated from one another by Sr2+ cations. The emission maximum at 485 nanometers appears blue-white and has a quantum yield of 0.48 +/- 0.02. The excited-state lifetime, electron spin resonance, magnetic susceptibility, and structural data all suggest that luminescence originates from a ligand-to-metal Ce4+ charge transfer.

引用

页码：837 / 839

页数：3

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