• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Realizing Efficient Electroluminescence from Silicon Nanocrystals.
【24h】

Realizing Efficient Electroluminescence from Silicon Nanocrystals.

机译：从硅纳米晶体实现高效电致发光。

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

Colloidal semiconductor nanocrystals (NCs) have received considerable attention for optoelectronic applications due to their high photoluminescence efficiency and broad spectral tunability. The solution processibility of semiconductor NCs permits the integration into hybrid light-emitting devices that use organic semiconductors as charge transport layers. These devices offer the potential for low-cost manufacture through wet-coating processes in the future. While electroluminescence (EL) from group II-VI and III-V NCs has been well studied, emission from group IV NCs including silicon (Si) has not been characterized as extensively.;This work focuses on solving the challenges to realizing efficient EL from hybrid nanocrystal-organic light-emitting devices (NC-OLEDs) containing organic semiconductors and SiNCs that are chemically passivated with ligands. Starting from the macroscopic point of view, this work first aims to understand the relationship between the surface morphology of SiNCs and device performance using a traditional hybrid nanocrystal-organic device design. The inherent bottlenecks of these conventional devices are discussed as they relate specifically to EL from SiNCs. Consequently, new device architecture is proposed, separately optimizing each functional layer within the hybrid device structure, concluding with the establishment of design rules for device engineering. Furthermore, efforts are made to address the significant open question of how surface passivation impacts device performance. Such discussion provides another consideration at NC surface during the hybrid-device design. Finally, an overview for the future research direction will be discussed.
机译：胶体半导体纳米晶体（NCs）由于其高的光致发光效率和广泛的光谱可调性而在光电应用中受到了广泛的关注。半导体NC的溶液可加工性允许集成到使用有机半导体作为电荷传输层的混合发光器件中。这些设备为将来通过湿涂工艺低成本制造提供了潜力。尽管已经对II-VI和III-V组NC的电致发光（EL）进行了深入研究，但IV组NC包括硅（Si）的发射尚未得到广泛的表征;该工作着重于解决从实现高效EL所面临的挑战包含有机半导体和被配体化学钝化的SiNC的混合纳米晶体-有机发光器件（NC-OLED）。从宏观的角度出发，这项工作首先旨在了解使用传统的混合纳米晶体-有机器件设计的SiNC的表面形态与器件性能之间的关系。讨论了这些常规设备的固有瓶颈，因为它们特别涉及SiNC的EL。因此，提出了新的设备架构，并在混合设备结构中分别优化了每个功能层，同时建立了设备工程设计规则。此外，人们致力于解决表面钝化如何影响器件性能这一重大开放性问题。这种讨论为混合设备设计期间的NC表面提供了另一个考虑。最后，将讨论未来研究方向的概述。

著录项

  • 作者

    Cheng, Kai-Yuan.;

  • 作者单位

    University of Minnesota.;

  • 授予单位 University of Minnesota.;
  • 学科 Nanotechnology.;Engineering Materials Science.;Engineering Chemical.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 176 p.
  • 总页数 176
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 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