Genetic Algorithm−Assisted Combinatorial Search for a New Green Phosphor for Use in Tricolor White LEDs
Authors:
- 8 December 2005
- journal article
- Published by American Chemical Society (ACS) in Journal of Combinatorial Chemistry
- Vol. 8 (1) , 44-49
Abstract
An evolutionary optimization process involving a genetic algorithm and combinatorial chemistry was employed for the development of green phosphors which are suitable for tricolor white-light-emitting diodes. To accomplish a high luminescent efficiency at 400 nm excitation, we screened a seven-cation oxide system including Tb, Gd, Ce, Mg, Si, Al, and B. The combination of a genetic algorithm and combinatorial chemistry enhanced the searching efficiency when applied for phosphor screening. As a result, the optimized composition was Tb0.01Gd0.02Ce0.04B0.1Si0.83Oδ, The luminance of this borosilicate glass was 67% that of ZnS:Cu,Al at 400-nm excitation.Keywords
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