Novel Energy-Transfer Route and Enhanced Luminescent Properties in YVO4:Eu3+/YBO3:Eu3+ Composite
详细信息 查看全文
- 作者：Guohui Pan ; Hongwei Song ; Xue Bai ; Zhongxin Liu ; Hongquan Yu ; Weihua Di ; Suwen Li ; Libo Fan ; Xinguang Ren ; Shaozhe Lu
- 刊名：Chemistry of Materials
- 出版年：2006
- 出版时间：September 5, 2006
- 年：2006
- 卷：18
- 期：18
- 页码：4526 - 4532
- 全文大小：408K
- 年卷期：v.18,no.18(September 5, 2006)
- ISSN：1520-5002
文摘
In this paper, YVO4:Eu3+/YBO3:Eu3+ composite was fabricated by chemical corrosion through a two-step hydrothermal process, i.e., first preparation of YBO3:Eu3+ nanocrystals and subsequent chemicalcorrosion by Na3VO4 solution. A novel energy-transfer and luminescent route via UV and VUV excitationwas identified (YBO3 phase
YVO4 phase Eu3+ ions in the YVO4 phase), which remained in thesample annealed at high temperature. In this composite high quantum yield was maintained, andconsiderably improved color purity was induced. A corrosive interface between the YVO4:Eu3+ and YBO3:Eu3+ phases was identified by the site-selective excitation technique, where the local environmentsurrounding Eu3+ was extremely complex. It is believed that, through further optimization, this novelcomposite can be candidate phosphors for red PDPs and Hg-free fluorescent lamp in the future.
YVO4 phase Eu3+ ions in the YVO4 phase), which remained in thesample annealed at high temperature. In this composite high quantum yield was maintained, andconsiderably improved color purity was induced. A corrosive interface between the YVO4:Eu3+ and YBO3:Eu3+ phases was identified by the site-selective excitation technique, where the local environmentsurrounding Eu3+ was extremely complex. It is believed that, through further optimization, this novelcomposite can be candidate phosphors for red PDPs and Hg-free fluorescent lamp in the future.