| 학회 | 한국재료학회 |
| 학술대회 | 2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 | 26권 1호 |
| 발표분야 | F. 광기능/디스플레이 재료 분과 |
| 제목 | New green phosphors of Sr5B3O9F: Ce3+, Tb3+, Na+ for NUV-LED applications |
| 초록 | Promising green phosphors of Sr5-x-y-zCexTbyNazB3O9F (x = 0.1, y = 0.4, z = 0.1, 0.4, 0.5) were synthesized by solid-state reactions [1,2]. Prominently enhanced photoluminescence (PL) excitation and emission spectra were observed when Na+ and Ce3+ were co-doped into the Sr5B3O9F:Tb3+ phosphors. Scanning electron microscopy (SEM) images of Sr5-x-y-zCexTbyNazB3O9F (x = 0.1, y = 0.4, z = 0.1, 0.4, 0.5) phosphors were obtained and the green emission light of a Sr4Ce0.1Tb0.4Na0.5B3O9F phosphor was compared to that of commercially available green phosphate and silicate phosphors. The internal quantum efficiency (IQE), color rendering index (CRI), correlated color temperature (CCT), and Commission Internationale de l’Eclairage (CIE) coordinates were characterized for the Sr4Ce0.1Tb0.4Na0.5B3O9F phosphor using a 365 nm LED chip. Reference [1] S. Yang, S. Park, J. Alloys Compd. 834, 155094 (2020). [2] W. Yang, S. Park, RSC Adv. 6, 12652 (2016). Acknowledgement This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the ministry of Education, Science and Technology (NRF-2018R1D1A3B07048543). This work was supported by the BB21+ Project in 2018. This research was conducted with the support of the Ministry of Education’s University Innovation Support Project. |
| 저자 | 양성준, 박상문 |
| 소속 | 신라대 |
| 키워드 | Green phosphor; X-ray diffraction; Quantum efficiency; NUV-LED |
