A new CaF2-YAG: Ce composite phosphor ceramic for high-power and high-color-rendering WLEDs
文献类型：期刊论文
| 作者 | Gu, Chi; Wang, Xiao-Jun; Xia, Chao; Li, Shuxing; Liu, Peng; Li, Dongzhen; Li, Huili; Zhou, Guohong; Zhang, Jian; Xie, Rong-Jun |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2019-07-28 |
| 卷号 | 7期号:28页码:8569 |
| ISSN号 | 2050-7526 |
| DOI | 10.1039/c9tc02407g |
| 文献子类 | Article |
| 英文摘要 | Thermally robust and optically transparent phosphor ceramics are now attracting great attention as promising luminescent materials for high-power white light-emitting diodes (WLEDs). Here, we report a new CaF2-YAG: Ce phosphor ceramic in which the yellow-emitting YAG: Ce particles are embedded in a non-luminescent CaF2 ceramic matrix. The composite phosphor ceramic was fabricated at a very low sintering temperature of 700 degrees C by using a simple hot-pressing method. No detectable interfacial reaction occurs between the YAG: Ce particle and the CaF2 matrix. Owing to the excellent optical properties and high thermal conductivity of CaF2, the prepared CaF2-YAG: Ce phosphor ceramic shows a high quantum efficiency (IQE = 83.2%), and a low thermal quenching (only 9% loss in luminescence at 150 degrees C). WLEDs, fabricated by combining the CaF2-YAG: Ce phosphor ceramic with a 460 nm blue chip of 2 W, exhibited bright white light with a luminous flux of 359.7 lm, a color temperature of 4021-7941 K and a color rendering index of 70.1-82.7. The composite phosphor ceramic showed a better performance than the traditional single-phase YAG: Ce ceramic, enabling it to be used in high-power WLEDs. |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.sic.ac.cn/handle/331005/26961]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Gu, Chi,Wang, Xiao-Jun,Xia, Chao,et al. A new CaF2-YAG: Ce composite phosphor ceramic for high-power and high-color-rendering WLEDs[J]. JOURNAL OF MATERIALS CHEMISTRY C,2019,7(28):8569. |
| APA | Gu, Chi.,Wang, Xiao-Jun.,Xia, Chao.,Li, Shuxing.,Liu, Peng.,...&Xie, Rong-Jun.(2019).A new CaF2-YAG: Ce composite phosphor ceramic for high-power and high-color-rendering WLEDs.JOURNAL OF MATERIALS CHEMISTRY C,7(28),8569. |
| MLA | Gu, Chi,et al."A new CaF2-YAG: Ce composite phosphor ceramic for high-power and high-color-rendering WLEDs".JOURNAL OF MATERIALS CHEMISTRY C 7.28(2019):8569. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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