| 论文题目 | Preparation and photoluminescence of novel La8Ca2(Si4P2O22N2)O-2 oxynitride phosphors containing Eu2+/Ce3+/Tb3+ ions |
| 作 者 | ; Langping Dong, Liang Zhang, Wei Lü, Baiqi Shao, Shuang Zhao and Hongpeng You* |
| 发表年度 | MAR 7 2019 |
| 刊物名称 | DALTON TRANSACTIONS |
| 卷、期、页码 | 48; 9; 3028-3037 |
| 影响因子 | |
| 论文摘要 | A series of novel Eu2+/Ce3+/Tb3+ ion doped La8Ca2(Si4P2O22N2)O-2-based apatite structure oxynitride phosphors have been synthesized by a solid-state method. The phase purity has been checked by X-ray diffraction (XRD) and the Rietveld method. The photoluminescence excitation (PLE) spectra indicate that the obtained phosphors have broad excitation bands in the n-UV range, which is a favourable property for application as n-UV-WLED phosphors. The concentration quenching has been investigated in detail. The temperature-dependent luminescence and efficiency study shows that the as-prepared phosphors have a good thermal stability and high quantum efficiency. Moreover, a warm white LED device with a low color temperature of 4288 K and a high color rendering index (R-a) of 80.8 has been obtained by coating a La8Ca1.99(Si4P2O22N2)O-2:0.01Eu(2+) phosphor with a (Sr,Ca)AlSiN3:Eu2+ red phosphor on a n-UV chip. Our results reveal that the La8Ca2(Si4P2O22N2)O-2:Eu2+ phosphor is a promising bluish-green phosphor for WLEDs. |
| 全文链接 | https://pubs.rsc.org/en/content/articlelanding/2019/DT/C8DT04810J#!divAbstract |
| 附件地址 |
研究队伍