| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터) |
| 권호 |
16권 2호, p.1271 |
| 발표분야 |
공업화학 |
| 제목 |
Spray Pyrolysis Synthesis of BaxSr1-xAl2O4 : Eu2+ phosphor andCharacterization of Luminescent Properties |
| 초록 |
Eu2+ dopped BaxSr1-xAl2O4phosphors were synthesized by ultrasonic spray pyrolysis at 600oC. The spray solution was prepared by using nitrate-based starting materialsdissolved in D.I water with 0.01M of total concentration. The concentration of Eu dopant was 1 mol% relative to Sr and Ba ion. The prepared particles were sintered at 900oC under H/N (5/95) condition for increasing crystallinity. The shapes of particles were spherical and submiron size with non-aggregation. The BaxSr1-xAl2O4 :Eu2+ were efficiently excitedby UV light around 340nm, and showed broad band emission due to 4f65d1 → 4f7 transition of Eu2+. As the concentration of Sr ion was increased, the emission peaks were shifted to longer wavelength from 500nm to 521nm. From the luminescence behavior of prepared particles, BaxSr1-xAl2O4 :Eu2+ showed the potential green phosphor for UV pumping white LEDs.
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| 저자 |
정원근, 유홍정, 김성현
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| 소속 |
고려대 |
| 키워드 |
spray pyrolysis; phosphor; rare earth; LED
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| E-Mail |
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| 원문파일 |
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