...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal growth & design >CsPbBr3/Cs4PbBr6 Nanocomposites: Formation Mechanism, Large-scale and Green Synthesis, and Application in White Light-Emitting Diodes
【24h】

CsPbBr3/Cs4PbBr6 Nanocomposites: Formation Mechanism, Large-scale and Green Synthesis, and Application in White Light-Emitting Diodes

机译：CSPBBR3 / CS4PBBR6纳米复合材料：形成机制，大规模和绿色合成，以及在白色发光二极管的应用

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

CsPbBr3/Cs4PbBr6 nanocomposites recently were found to yield efficient luminescence. However, the formation mechanism of the nanocomposites is unclear, and large-scale and green synthesis is still challenging. Here, we develop a self-assembly reaction to fabricate CsPbBr3/Cs(4)PbB(r)6 nanocomposites efficiently and environmentally friendly. The transmission electron microscopy clearly shows CsPbBr3 nanocrystal is embedded in Cs4PbBr6 matrix, forming a CsPbB(r)3/Cs4PbBr6 composite structure. In situ characterization reveals that the CsPbBr3/Cs4PbBr6 nano composites are formed by a two-step reaction, driven by ion concentration difference. The self-encapsulation and separation of the CsPbBr3 NCs by the host Cs4PbBr6 result in the material exhibiting a high PLQY of 83% and narrow-band emission at 517 nm with a full width at half -maximum of only 21 nm. Further, we fabricate an on-chip white light-emitting diode (LED) using the as-synthesized CsPbBr3/Cs4PbBr6 nanocomposites as a green emitter and red K2SiF6:Mn4+ phosphor on the surface of a blue LED chip. The resulting white LED exhibits a high luminous efficiency of up to 88 lm W-1 at 20 mA with an NTSC value of 131% and Rec. 2020 of 98%.
机译：最近发现CSPBBR3 / CS4PBBR6纳米复合材料产生有效的发光。然而，纳米复合材料的形成机制尚不清楚，大规模和绿色合成仍然具有挑战性。在这里，我们开发了一种自组装反应，以有效地环保，以制造CSPBBR3 / CS（4）PBB（R）6纳米复合材料。透射电子显微镜清楚地显示CSPBBR3纳米晶嵌入CS4PBBR6基质中，形成CSPBB（R）3 / CS4PBBR6复合结构。原位表征显示，通过离子浓度差的驱动，通过两步反应形成CSPBBR3 / CS4PBBR6纳米复合材料。 CS4PBBR6的CSPBBR3 NCS的自封装和分离结果在表现出83％的高plqy和517nm的窄带发射的材料，其宽度为21nm。此外，我们使用AS合成的CSPBBR3 / CS4PBBR6纳米复合材料制造片上白色发光二极管（LED）作为绿色发射器和红色K2SIF6：MN4 +荧光体在蓝色LED芯片的表面上。所得到的白色LED在20 mA下显示出高达88升W-1的高发光效率，NTSC值为131％和REC。 2020年98％。

著录项

  • 来源
    《Crystal growth & design》 |2018年第10期|共9页
  • 作者

    Wang Wenkang; Wang Duofa; Fang Fan; Wang Song; Xu Guohua; Zhang Tianjin;

  • 作者单位

    Hubei Univ Key Lab Green Preparat &

    Applicat Funct Mat Hubei Collaborat Innovat Ctr Adv Organ Chem Mat Minist Educ Sch Mat Sci &

    Engn 368 Youyi Rd Wuhan 430062 Hubei Peoples R China;

    Hubei Univ Key Lab Green Preparat &

    Applicat Funct Mat Hubei Collaborat Innovat Ctr Adv Organ Chem Mat Minist Educ Sch Mat Sci &

    Engn 368 Youyi Rd Wuhan 430062 Hubei Peoples R China;

    Hubei Univ Key Lab Green Preparat &

    Applicat Funct Mat Hubei Collaborat Innovat Ctr Adv Organ Chem Mat Minist Educ Sch Mat Sci &

    Engn 368 Youyi Rd Wuhan 430062 Hubei Peoples R China;

    Hubei Univ Arts &

    Sci Xiangyang 441053 Hubei Peoples R China;

    Yichang CSG Polysilicon Co Ltd Yichang 443000 Hubei Peoples R China;

    Hubei Univ Key Lab Green Preparat &

    Applicat Funct Mat Hubei Collaborat Innovat Ctr Adv Organ Chem Mat Minist Educ Sch Mat Sci &

    Engn 368 Youyi Rd Wuhan 430062 Hubei Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
  • 关键词

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