| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1593466 | Solid State Communications | 2010 | 4 Pages |
Abstract
White-light generation is achieved by codoping a TT-phase Ba1.2±δCa0.8±δSiO4 lattice with Eu2+ and Mn2+ ions. The phosphor exhibits a red emission from Mn2+ and a broad blue–green emission from Eu2+. Both emissions are slowly quenched at the same decay rate as the excitation power/temperature increase resulting in no variation in white-color quality. Optically-active Mn2+ in this structure occupies the six-coordinated site with its different environment from optically-inactive Mn2+ in other orthosilicates. The white-light-emitting diode using this phosphor and a 420 nm chip demonstrated white light with a color temperature of 4600 K and a deluxe color rendering index of 92.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Kwangwon Park, Namsik Choi, Jongsu Kim, Patrick Kung, Seongsin Margaret Kim,