• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Combinatorial discovery of self-color-mixing phosphors Bi4(1-x)Si3O12 : RE4x3+ (RE3+ = Dy3+, Eu3+) for direct white light emission
【24h】

Combinatorial discovery of self-color-mixing phosphors Bi4(1-x)Si3O12 : RE4x3+ (RE3+ = Dy3+, Eu3+) for direct white light emission

机译：自混色磷光体Bi4（1-x）Si3O12的组合发现：RE4x3 +（RE3 + = Dy3 +，Eu3 +），可直接发出白光

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Phosphors with direct white light emission have been successfully found in the rare earth doped bismuth silicate systems, Bi4(1-x)Si3O12(BSO) : RE(4)x(3+) (RE3+ = Eu3+, Dy3+), using a fast combinatorial design and screening method. The material libraries were synthesized by ink-jetting precursor solutions into microreactor wells and sintering at high temperatures. The candidate compositions of the white light phosphors with varied dopant concentrations were evaluated by screening the recorded luminescence pictures under UV light excitation. The optimal compositions showing white light emission were further confirmed to be Bi3.96Si3O12 : Eu-0.04(3+) and Bi-3.84Si3O12 : Dy-0.16(3+) via scale-up experiments. Additionally, the CIE chromaticity coordinate of the white light emission is located at (0.333, 0.326) for the optimal Bi3.96Si3O12 : Eu-0.04(3+) and the CIE coordinate of the Bi3.84Si3O12 : Dy-0.16(3+) phosphor is located at (0.302, 0.333), which are both very close to the CIE coordinate of soft sunlight (0.330, 0.330) and good for human eyesight. For the BSO : RE3+ (RE3+ = Eu3+, Dy3+) samples, the generation of direct white light emission can be realized by properly controlling the amount of doped RE3+ ions. It has been concluded that the white light emission directly results from a self-color-mixing mechanism of intrinsic host luminescence and doping ion luminescence. Besides that, the luminescence properties, energy transfer mechanism, and decay time of the direct white light phosphors have been discussed to set up a close relationship between the doping compositions and luminescence characteristics of the BSO : RE3+ (RE3+ = Eu3+, Dy3+) phosphors.
机译：在稀土掺杂的硅酸铋铋系统Bi4（1-x）Si3O12（BSO）：RE（4）x（3+）（RE3 + = Eu3 +，Dy3 +）中成功地发现了具有直接白光发射的荧光粉组合设计和筛选方法。通过将前体溶液喷墨到微反应器孔中并在高温下烧结来合成材料库。通过在紫外光激发下筛选记录的发光图像，评估掺杂剂浓度变化的白光磷光体的候选成分。通过放大实验，进一步证实显示白光发射的最佳组成为Bi3.96Si3O12：Eu-0.04（3+）和Bi-3.84Si3O12：Dy-0.16（3+）。另外，对于最佳Bi3.96Si3O12：Eu-0.04（3+）和最佳Bi3.84Si3O12：Dy-0.16（3+）的CIE色度坐标位于（0.333，0.326）。荧光粉位于（0.302，0.333），这两个位置都非常接近柔和阳光的CIE坐标（0.330，0.330），并且对人的视力有益。对于BSO：RE3 +（RE3 + = Eu3 +，Dy3 +）样品，可以通过适当控制掺杂的RE3 +离子的量来实现直接白光发射。已经得出结论，白光发射直接由固有主体发光和掺杂离子发光的自混色机制产生。除此之外，还讨论了直接白光磷光体的发光特性，能量传递机制和衰减时间，以建立BSO：RE3 +（RE3 + = Eu3 +，Dy3 +）磷光体的掺杂组成与发光特性之间的紧密关系。

著录项

相似文献

  • 外文文献
  • 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