English  |  正體中文  |  简体中文  |  Items with full text/Total items : 67621/67621 (100%)
Visitors : 23118294      Online Users : 121
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/51996


    Title: Tailoring of the Wave Function Overlaps InAs/GaAs(1-x)Sb(x) Type-II Quantum Dots
    Authors: Hsu,WT;Liao,YA;Lu,SK;Cheng,SJ;Chiu,PC;Chyi,JI;Chang,WH
    Contributors: 電機工程學系
    Keywords: 1.3 MU-M;LUMINESCENCE;EXCITONS
    Date: 2010
    Issue Date: 2012-03-28 10:12:53 (UTC+8)
    Publisher: 國立中央大學
    Abstract: Effects of thermal annealing on the emission properties of type-II InAs quantum dots (QDs) covered by a thin GaAs(1-x)Sb(x) layer are investigated by photoluminescence (PL) and time-resolved PL measurements. Apart from large blueshifts and a pronounced narrowing of the QD emission peak, the annealing induced alloy intermixing also leads to enhanced radiative recombination rates and reduced localized states in the GaAs(1-x)Sb(x) layer. We find that the type-II QD structure can sustain thermal annealing up, to 850 degrees C. In particular, we find that it is possible to manipulate between type-I and type-II recombinations in annealed QDs by using different excitation powers. We demonstrate that postgrowth thermal annealing can be used to tailor the band alignment, the wave function overlaps, and hence the recombination dynamics in the InAs/GaAs(1-x)Sb(x) type-II QDs. (C) 2009 Elsevier B.V. All rights reserved.
    Relation: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
    Appears in Collections:[電機工程學系] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML242View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    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 ©   - Feedback  - 隱私權政策聲明