Facile preparation and formation mechanism of Sr2Si5N8:Eu2+ red-emitting phosphors
文献类型：期刊论文
| 作者 | Wang, Yang1; Wang, Yunli; Wang, Ming; Shao, Yiran; Zhu, Yingchun |
| 刊名 | MATERIALS RESEARCH EXPRESS
 |
| 出版日期 | 2018 |
| 卷号 | 5期号:5 |
| 关键词 | Sr2Si5N8 red phosphors luminescence phase transformation |
| ISSN号 | 2053-1591 |
| DOI | 10.1088/2053-1591/aabf82 |
| 英文摘要 | The red-emitting Sr2Si5N8:Eu2+ phosphors have been synthesized in a new facile process using (oxy) nitride precursors by inductive calcination underN(2) atmosphere at ordinary pressure. Different from the prevailing methods, lower cost raw materials, simpler pretreatment, without harsh conditions and a shorter reaction time are achieved. It was found that red-emitting Sr2Si5N8:Eu2+ phosphors were synthesized with high crystallinity and purity after 1 h inductive calcination. The formation mechanism was characterized by XRD, SEM, TEM and Fluorescence microscopy. It was demonstrated that a hexagonal mesophase of Sr-doped alpha-Si3N4 was primarily formed in the reaction process, which transformed into the final product of the orthorhombic Sr2Si5N8:Eu2+ phosphors. During the reaction process, the color of the samples transforms from greenish-yellow to orange and eventually to red. The as-prepared phosphors have a wide excitation in the range of 250 similar to 570 nm which matches blue light chips and give a red-light emission peaking at 610 nm. The results indicate a promising prospect for a simple, efficient and inexpensive way to prepare Sr2Si5N8:Eu2+ phosphors for blue/UV-based warm-white LEDs and other fluorescent applications. |
| 学科主题 | Materials Science, Multidisciplinary |
| WOS记录号 | WOS:000431404800002 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | This work was supported by the National Natural Science Foundation of China (No. 51572283 and 51232007) and the Science and Technology Commission of Shanghai Municipality (No. 11XD1405600 and 08JC1420700), sponsored by Shanghai Sailing Program (No. 17YF1421700) and the Innovation Fund of SICCAS (No. Y75ZC8180G). ; This work was supported by the National Natural Science Foundation of China (No. 51572283 and 51232007) and the Science and Technology Commission of Shanghai Municipality (No. 11XD1405600 and 08JC1420700), sponsored by Shanghai Sailing Program (No. 17YF1421700) and the Innovation Fund of SICCAS (No. Y75ZC8180G). |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24943]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat CAS, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yang,Wang, Yunli,Wang, Ming,et al. Facile preparation and formation mechanism of Sr2Si5N8:Eu2+ red-emitting phosphors[J]. MATERIALS RESEARCH EXPRESS,2018,5(5). |
| APA | Wang, Yang,Wang, Yunli,Wang, Ming,Shao, Yiran,&Zhu, Yingchun.(2018).Facile preparation and formation mechanism of Sr2Si5N8:Eu2+ red-emitting phosphors.MATERIALS RESEARCH EXPRESS,5(5). |
| MLA | Wang, Yang,et al."Facile preparation and formation mechanism of Sr2Si5N8:Eu2+ red-emitting phosphors".MATERIALS RESEARCH EXPRESS 5.5(2018). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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