| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1494010 | Optical Materials | 2014 | 4 Pages |
•Green-emitting KBa1−xScSi3O9:Eu2+x phosphors were synthesized by a solid-state reaction method.•These phosphors show green emission centered at 521 nm under near-UV and blue light excitation.•These phosphors show an excellent thermal stability on the temperature quenching effect.
New green-emitting KBa1−xScSi3O9:Eu2+x phosphors for white LEDs were synthesized by a conventional solid-state reaction method. The obtained KBa1−xScSi3O9:Eu2+x phosphors show the strong broad optical absorption band from UV to blue light region and exhibit broad green emission with a peak at 521 nm under excitation at 405 nm due to the allowed 4f65d1−4f7 transition of Eu2+. Optimization of Eu2+ concentration resulted in the highest green emission peak intensity was obtained at the composition of KBa0.94ScSi3O9:Eu2+0.06, and the relative emission intensity of this phosphor was 32% of that of a commercial YAG:Ce3+ phosphor.
