Silica encapsulated ZnO quantum dot-phosphor nanocomposites Sol-gel preparation and white light-emitting device application
文献类型：期刊论文
| 作者 | Liang, Y. C.; Liu, K. K.; Lu, Y. J.; Zhao, Q.; Shan, C. X. |
| 刊名 | Chinese Physics B
 |
| 出版日期 | 2018 |
| 卷号 | 27期号:7页码:8 |
| 关键词 | ZnO QD-phosphors nanocomposites (ZSPN) phosphors light-emitting diodes energy-transfer luminescence nanoparticles excitation efficient dy3+ Physics |
| ISSN号 | 1674-1056 |
| DOI | 10.1088/1674-1056/27/7/078102 |
| 英文摘要 | ZnO quantum dots (QDs) as an eco-friendly and low-cost material has bright fluorescence, which makes it promising material for healthy lighting and displaying. However, the low fluorescence efficiency and poor stability of ZnO QDs impede their applications in lighting application. In this work, silica encapsulated ZnO QD-phosphors nanocomposites (ZSPN) have been prepared through a sol-gel synthesis process, where yellow-emitting ZnO QDs and blue-emitting BaMgAl10O17 :Eu2+ are employed as the luminescence cores and silica as link between two luminescence materials. Tunable photoluminescence of ZSPN and the white light emission have been achieved through changing mass ratio of both of ZnO QDs and commercial phosphors. The PLQY of the ZSPN can reach 63.7% and they can maintain high luminous intensity even the ambient temperature up to 110 degrees C and after 35 h of UV irradiation. In addition, they can keep stable for 40 days. By coating the ZSPN phosphors onto a ultraviolet chip, WLEDs with luminous efficiency of 73.6 lm/W and the color coordinate, correlated color temperature, and color rendering index can reach (0.32, 0.34), 5580 K, and 87, respectively, indicating the bright prospect of the ZSPN phosphors used in healthy lighting. |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/61151]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | Liang, Y. C.,Liu, K. K.,Lu, Y. J.,et al. Silica encapsulated ZnO quantum dot-phosphor nanocomposites Sol-gel preparation and white light-emitting device application[J]. Chinese Physics B,2018,27(7):8. |
| APA | Liang, Y. C.,Liu, K. K.,Lu, Y. J.,Zhao, Q.,&Shan, C. X..(2018).Silica encapsulated ZnO quantum dot-phosphor nanocomposites Sol-gel preparation and white light-emitting device application.Chinese Physics B,27(7),8. |
| MLA | Liang, Y. C.,et al."Silica encapsulated ZnO quantum dot-phosphor nanocomposites Sol-gel preparation and white light-emitting device application".Chinese Physics B 27.7(2018):8. |
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