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Tunable luminescent spectra via energy transfers between different lattice sites in Ce3+, Mn2+ codoped Ba9Lu2Si6O24 phosphors for NUV-based warm white LED applications
Zhang, Jianxin; Liu, Yongfu; Song, Kaixin; Jiang, Haochuan; Jiang, Jun
2018
发表期刊JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
卷号29期号:6页码:4547-4556
摘要A series of Ce3+-Mn2+ codoped Ba9Lu2Si6O24 (BLS) were synthesized by high-temperature solid-state reactions. The 380-410 nm excitation band of Ce3+ at the Lu sites (Ce(1)) matches well with the emission light of commercial near-ultraviolet (NUV) light-emitting diode (LED) chips. Under the Ce(1) excitation, BLS:Ce3+, Mn2+ exhibited a tunable emission from blue-green to yellow-orange via energy transfers (ETs) from Ce(1) to Mn2+. The ET was demonstrated to be of the resonant type via a dipole-quadrupole mechanism. At room temperature (RT), the optimal internal and external quantum efficiencies (QEs) of BLS:Ce3+, Mn2+ were determined as 79 and 42%. At 150 A degrees C, 85% of the RT QE still can be remained, showing a high thermal stability. A warm white LED (WLED) with a color rendering index of 84 and a correlated color temperature of 3660 K was obtained by combining a 395 nm NUV chip with the phosphor and CaAlSiN3:Eu2+. The efficiency reaches 17 lm W-1 at 20 mA, which is better than the value of most NUV-based WLEDs. These results indicate the promising application of the phosphor as an attractive candidate for WLEDs.
关键词Light-emitting-diodes Single-phase Green Phosphor Color Efficient Silicate
学科领域Engineering ; Polymer Science
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16784
专题2018专题
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GB/T 7714
Zhang, Jianxin,Liu, Yongfu,Song, Kaixin,et al. Tunable luminescent spectra via energy transfers between different lattice sites in Ce3+, Mn2+ codoped Ba9Lu2Si6O24 phosphors for NUV-based warm white LED applications[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2018,29(6):4547-4556.
APA Zhang, Jianxin,Liu, Yongfu,Song, Kaixin,Jiang, Haochuan,&Jiang, Jun.(2018).Tunable luminescent spectra via energy transfers between different lattice sites in Ce3+, Mn2+ codoped Ba9Lu2Si6O24 phosphors for NUV-based warm white LED applications.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,29(6),4547-4556.
MLA Zhang, Jianxin,et al."Tunable luminescent spectra via energy transfers between different lattice sites in Ce3+, Mn2+ codoped Ba9Lu2Si6O24 phosphors for NUV-based warm white LED applications".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 29.6(2018):4547-4556.
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