지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.6
- 수록면
- 53 - 58 (6page)
이용수
초록· 키워드
오류제보하기
Tb<SUP>3+</SUP>- or Ce<SUP>3+</SUP>-doped LaBO₃ phosphors were synthesized by a solid-state reaction process with different concentrations of activator ions. The XRD spectra showed the monoclinic LaBO₃ pattern with the main peak occurring at (014) plane, irrespective of the kind of activator ions. The crystallite size was determined by using the Scherrer formula, and the maximum was obtained with an activator concentration of 0.05 mol for both phosphors. The emission spectra of LaBO₃ phosphors doped with Tb<SUP>3+</SUP> ions under excitation at 269 nm exhibited three major emission bands at 488, 544, and 587 nm. The strongest emission was green at 544 nm owing to the <SUP>5</SUP>D₄-<SUP>7</SUP>F<SUB>5</SUB> transition at a Tb<SUP>3+</SUP> ion concentration of 0.05 mol. For the Ce<SUP>3+</SUP>-doped LaBO₃ phosphors, one strong blue band centered at 469 nm and weak multipeaks were observed. These results suggest that the optimum green and blue emission can be realized by controlling the concentration and type of activator ions incorporated in the host crystal.
목차
ABSTRACT
1. Introduction
2. Experiment
3. Results and Discussion
4. Conclusions
References
참고문헌 (0)
참고문헌 신청이 논문의 저자 정보
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2016-563-001887844