首页> 外文期刊>CERAMICS INTERNATIONAL >Luminescence enhancement of Al3+ co-doped Ca3Sr3(VO4)(4):Eu3+ red-emitting phosphors for white LEDs
【24h】

Luminescence enhancement of Al3+ co-doped Ca3Sr3(VO4)(4):Eu3+ red-emitting phosphors for white LEDs

机译:Al3 +共掺杂Ca3sR3(VO4)(4)(4)的发光增强:Eu3 +白色LED的红发磷光体

获取原文
获取原文并翻译 | 示例
           

摘要

A series of red-emitting Al3+ co-doped Ca3Sr3(VO4)(4):Eu3+ and Ca3Sr3(VO4)(4):Eu3+ phosphors with standard rhombohedral structures synthesized through the combustion method fueled by citric acid. By using X-ray diffraction, scanning electron microscopy, and photoluminescence spectroscopy, the crystal structure and photoluminescence properties of the prepared powder samples are investigated. The results indicate that the phosphors can be efficiently excited by blue light to achieve intense red luminescence (618 nm), which is associated with the hypersensitive D-5(0) - F-7(2) transition of Eu3+. Furthermore, significant enhancement in the photoluminescence intensity from Al3+ co-doped Ca3Sr3(VO4)(4):Eu3+ phosphors is observed for an Al3+ concentration of 6 mol%. The influence of Al3+ on the crystal structure of Ca3Sr3(VO4)(4):Eu3+ and the mechanism of the photoluminescence enhancement are discussed.
机译:一系列红色发射Al3 +共掺杂Ca3sR3(VO4)(4):Eu3 +和Ca 3SR3(VO4)(4):Eu3 +磷光体通过柠檬酸燃料的燃烧方法合成的标准菱体结构。 通过使用X射线衍射,扫描电子显微镜和光致发光光谱,研究了制备的粉末样品的晶体结构和光致发光性质。 结果表明,磷光体可以通过蓝光有效激发,以实现强烈的红色发光(618nm),其与过敏D-5(0) - & F-7(2)EU3 +过渡。 此外,从Al3 +共掺杂Ca3sR3(VO4)(4)中的光致发光强度的显着增强:Eu3 +磷光体用于6mol%的Al 3 +浓度。 Al3 +对Ca3SR3(VO4)(4)(4)(4)(4)(4)的晶体结构的影响及其光致发光提高的机理。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号