| 학회 |
한국화학공학회 |
| 학술대회 |
2004년 가을 (10/29 ~ 10/30, 호서대학교(아산캠퍼스)) |
| 권호 |
10권 2호, p.2217 |
| 발표분야 |
재료 |
| 제목 |
Enhancement in Photoluminescence and Cathodoluminescence of Yttrium Aliminium Garnet(YAG) phosphor prepared by spray pyrolysis |
| 초록 |
Yttrium aluminum garnet (YAG) activated with trivalent terbium is one of the potential phosphors which can be used for CRT or FED applications because it is very stable and has long lifetime. YAG:Tb phosphor has narrow emission bands due to 5Di-7Fj transition. So, the brightness or the color coordinate is not good in compared with sulfide-type green phosphor which has a broad emission band. Ce doped YAG is a representative yellow phosphor for LED application. YAG:Ce converts the ultraviolet or blue radiation into a very broad yellow emission band. In order to enhance not only the brightness but the color coordinate of TAG:Tb, In this work the content of Tb was optimized and Ce codoping was tried with the intention of combining the emission band due to Ce into the Tb one. They were prepared by spray pyrolysis and the photoluminescence was monitored by changing the Tb content, Tb/Ce ratio, and the composition of matrix (YAG). Finally, it was found that codoping Ce is helpful for improving the brightness and the color coordinate of YAG:Tb phosphor. |
| 저자 |
이현우1, 정경열2, 김민성2, 강윤찬3, 양영석1
|
| 소속 |
1우석대, 2한국화학(연), 3건국대 |
| 키워드 |
YAG; spray pyrolysis; phosphor
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
