中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/39190
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 68069/68069 (100%)
造访人次 : 23055393      在线人数 : 221
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/39190


    题名: Pumping-beam-induced photovoltaic effect on the photoreflectance of a delta-doped GaAs film
    作者: Wang,DP;Chen,CC;Shen,TL;Hsu,TM;Lee,WC
    贡献者: 物理研究所
    关键词: FRANZ-KELDYSH OSCILLATIONS;ELECTRIC-FIELD;DEPLETION REGION;SPECTROSCOPY
    日期: 1996
    上传时间: 2010-07-08 14:07:45 (UTC+8)
    出版者: 中央大學
    摘要: The photoreflectance (PR) spectroscopy of a delta-doped GaAs film has been measured at 300 K. Results reveal many Franz-Keldysh oscillations (FKOs) above the band-gap energy, which will enable the electric-field strength to be determined from the periods of FKOs. Since the photovoltaic effect cannot be neglected in PR measurements when using light as both the pumping and probing beams, it is generally assumed that the modulation field delta F is much smaller than the built-in field F so that the periods of the FKOs will not be affected by the pumping beam, However, the induced photovoltage can be over 2/3 of Fermi level at low temperatures and cannot be neglected even at room temperature. Hence, the finite value of delta F needs to be taken into consideration. The effect of delta F on the shapes of PR is discussed, and it is shown that the FKOs of PR oscillate at a frequency corresponding to F-delta F/2. (C) 1996 American Institute of Physics.
    關聯: JOURNAL OF APPLIED PHYSICS
    显示于类别:[物理研究所] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML311检视/开启


    在NCUIR中所有的数据项都受到原著作权保护.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈  - 隱私權政策聲明