Y6+x/3Si11−yAlyN20+x−yO1−x+y:Re3+ (Re = Ce3+, Tb3+, Sm3+) phosphors identified by solid-state combinatorial chemistry
- 7 March 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 21 (15), 5780-5785
- https://doi.org/10.1039/c0jm03538f
Abstract
Solid-state combinatorial chemistry was implemented to develop new oxynitride phosphors for use in white light-emitting diodes. A two-step, high-throughput screening was implemented in a YN–AlN–SiN4 /3 ternary system that was based on random choices. We pinpointed a host structure, Y6+x/3Si11−yAlyN20+x −yO1−x +y (x = 0.939, y = 2), the refined structure of which was a trigonal (P31c) with lattice parameters a = b = 9.84196(6) Å, c = 10.68317(6) Å, α = β = 90°, and γ = 120°. Y6+x/3Si11−yAlyN20+x −yO1−x +y:Re3+ (Re = Ce3+, Tb3+, Sm3+) phosphors exhibited an acceptable emission in the green to red color range at blue or ultraviolet excitations.Keywords
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