...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Optical properties of freestanding GaN nanomembranes using monochromated valence-EELS
【24h】

Optical properties of freestanding GaN nanomembranes using monochromated valence-EELS

机译：使用单色价值鳗鱼独立GaN纳米爆炸的光学特性

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

In the present study, the dielectric function of freestanding GaN nanomembranes was described using valence electron energy loss spectroscopy coupled to a monochromated electron probe in a Sub-Electron-volt Sub-Angstrom transmission electron Microscope. Such a technique has proven to be very efficient in handling nanometer-scale freestanding nanomembranes and provided local and direct measurements of optical characteristics. Indeed, core-state along with outer-shell electrons transitions were first measured in the configuration where the GaN →c -axis was normal to the transferred momentum →q . With the help of Kramers-Kroning analyses and density functional theory, critical points energies were extracted and assigned. Finally, optical data such as the real refractive index n, extinction coefficient k, absorption coefficient α and reflectivity R were numerically deduced from the real and imaginary parts of the dielectric function.
机译：在本研究中，使用耦合到副电子伏子 - 宽透镜透射电子显微镜中的单色电子探针的价电子能量损失光谱来描述独立GaN纳米爆炸的介电功能。 这种技术已经证明在处理纳米级独立的纳米爆炸中并提供局部和直接测量光学特性的技术。 实际上，首先在GaN→C-XXIS正常到转移的动量→Q的配置中首先测量外壳电子转变的核心状态。 借助Kramers-Kroning分析和密度泛函理论，提取和分配关键点能量。 最后，从介电功能的真实和虚部中，数值推导出诸如真实折射率n，消光系数k，吸收系数α和反射率R的光学数据。

著录项

  • 来源
    《Materials Science and Engineering》 |2021年第10期|115333.1-115333.5|共5页
  • 作者

    M. Benaissa; W. Sigle; I. Benabdallah; R.T. ElAfandy; T.K. Ng; P.A. van Aken;

  • 作者单位

    LaMCScI Faculty of Sciences Mohammed V University of Rabat P.O. Box 1014 10000 Rabat Morocco;

    Max Planck Institute for Solid State Research Heisenbergstrasse 1 70569 Stuttgart Germany;

    LaMCScI Faculty of Sciences Mohammed V University of Rabat P.O. Box 1014 10000 Rabat Morocco;

    Photonics Laboratory King Abdullah University of Science and Technology (KAUST) Thuwal 21534 Saudi Arabia;

    Photonics Laboratory King Abdullah University of Science and Technology (KAUST) Thuwal 21534 Saudi Arabia;

    Max Planck Institute for Solid State Research Heisenbergstrasse 1 70569 Stuttgart Germany;

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

    Monochromated TEM; Valence EELS; Nanomembrane; GaN; Dielectric function;

    机译：单色TEM;价鳗鱼;纳米膜;甘;介电功能;

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