• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IEEE LEOS Annual Meeting Conference >Multi-layered CdSe/ZnS/CdSe heteronanocrystals to generate and tune white light
【24h】

Multi-layered CdSe/ZnS/CdSe heteronanocrystals to generate and tune white light

机译：多层CDSE / Zns / Cdse HeterOnoCrystals生成和曲面白光

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Till date different types of white light emitting diodes (WLEDs) including multi-chip WLEDs, monolithic WLEDs, and color-conversion WLEDs have been investigated [1–3]. Among them, color-conversion WLEDs have been the most widely investigated thus far and are commercially used today [4]. For WLEDs applications, recently semiconductor quantum dot nanocrystals (NCs) have also attracted great attention because of their tunable photoluminescence, high photoluminescence quantum yields, high photostability, and easy handling. Nanocrystals have been exploited in several WLED implementations to date [5-10]. However, in all of these NC based WLEDs mono-color emitting nanocrystals or their multiple combinations have been used as the luminophors. Only recently multi-color emitting semiconductor heteronanocrystals (hetero-NCs) have been introduced by synthesizing a quantum-dot-quantum-well (QDQW) structure in CdSe-ZnS material system [11]. In this heterostructure, first a CdSe core (quantum well), then a surrounding ZnS shell (quantum barrier), and finally a CdSe shell (quantum well) are synthesized one after the other. By using these multi-layered CdSe-ZnS hetero-NCs in solution, white light generation with multi-color emission from their CdSe cores (in yellow-orange) and from their CdSe shells (in cyan) has been shown [12]. However, for white light generation, using these heteronanocrystals in solution is not sufficient for the potential application in solid state lighting. Therefore, optical properties of such heteronanocrystal luminophors in the solid form need to be carefully analyzed to understand and control the photometric properties of the generated white light.
机译：迄今为止，已经研究了包括多芯片WLED，单片WLED和颜色转换WLED的不同类型的白色发光二极管（WLED）[1-3]。其中，迄今为止，颜色转换WLED是最广泛的研究，并且今天商业地使用[4]。对于WLEDS应用，最近半导体量子点纳米晶体（NCS）由于其可调谐光致发光，高光致发光量子产量，高光稳定性和易于处理，也引起了极大的关注。纳米晶体已在几个WLED实现中被利用至日期[5-10]。然而，在所有这些基于NC的WLED单色发射纳米晶体或其多种组合被用作发光液。仅通过在CDSE-ZnS材料系统中合成量子点 - 量子阱（QDQW）结构来引入仅多色发射半导体异酰胺（异性NC）[11]。在该异质结构中，首先是Cdse芯（量子阱），然后是一个周围的ZnS壳（量子屏障），最后是一个接一个地合成CDSE壳（量子阱）。通过在溶液中使用这些多层CDSE-ZnS异性NC，已经示出了具有来自其CDSE芯（以黄橙色）的多色发射的白光发射，并从其CDSE壳（在青色）中[12]。然而，对于白光发电，在溶液中使用这些异系晶体不足以用于固态照明中的潜在应用。因此，需要仔细分析这种异酰基晶体发光体的这种异酰基晶体发光体的光学性质以理解和控制所产生的白光的光度特性。

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