• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Photonics, devices, and systems IV >CdSe/ZnS/CdS core/shell quantum dots for white LEDs
【24h】

CdSe/ZnS/CdS core/shell quantum dots for white LEDs

机译：用于白色LED的CdSe / ZnS / CdS核/壳量子点

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

With their excellent photo-electronic properties, quantum dots, especially the Ⅱ-Ⅵ family semiconductor quantum dots, are now widely used to photo- and electro-luminescence device such as inorganic and organic light emitting diodes recently. The quantum dots have many applications in optoelectronic device such as LEDs for its many superior properties resulting from the three-dimensional confinement effect of its carrier. In this paper, White light-emitting diodes (WLEDs) were fabricated by combining blue InGaN chips with luminescent colloidal core/shell CdSe/ZnS/CdS quantum dots (QDs). The core/shell/shell structural CdSe/ZnS/CdS nanocrystals were synthesized in aqueous solution by using mercapto-acetate as stabilizer. The double shell can improve the core/shell interface quality. Photoluminescence of CdSe/ZnS/CdS quantum dots demonstrated high photoluminescence efficiency with a quantum yield more than 45%, and size-tunable emission wavelengths from 490 to 610nm. WLED was successfully assembled by blue InGaN chip plus green and red emitting CdSe/ZnS/CdS QDs. The WLED had the CIE coordinates of (0.33,0.34) and color render index of 91. The InGaN chip white-light-emitting diodes with CdSe/ZnS/CdS quantum dots are potentially useful in general illumination and display applications.
机译：量子点，尤其是Ⅱ-Ⅵ族半导体量子点，由于具有优异的光电性能，最近被广泛用于光和电致发光器件，例如无机和有机发光二极管。量子点由于其载体的三维约束效应而具有许多优越的性能，因此在光电器件（如LED）中具有许多应用。在本文中，通过将蓝色InGaN芯片与发光胶体核/壳CdSe / ZnS / CdS量子点（QDs）组合在一起，制造了白色发光二极管（WLED）。以巯基乙酸盐为稳定剂，在水溶液中合成了核/壳/壳结构的CdSe / ZnS / CdS纳米晶体。双外壳可以提高内核/外壳接口的质量。 CdSe / ZnS / CdS量子点的光致发光显示出高的光致发光效率，量子产率超过45％，并且发射波长的波长可调至490至610nm。 WLED由蓝色InGaN芯片以及发出绿色和红色发光的CdSe / ZnS / CdS量子点成功组装而成。 WLED的CIE坐标为（0.33,0.34），显色指数为91。具有CdSe / ZnS / CdS量子点的InGaN芯片白光发光二极管可能在一般照明和显示应用中有用。

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