淡江大學機構典藏:Item 987654321/108025
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 62819/95882 (66%)
造訪人次 : 4006271      線上人數 : 586
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧：
  • 您可在西文檢索詞彙前後加上"雙引號"，以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋，建議至進階搜尋限定作者欄位，可獲得較完整資料
    •  進階搜尋


    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/108025


    題名: Nonlinear bandgap opening behavior of BN co-doped graphene
    作者: Wang, Bo-Yao;Wang, Hsiao-Tsu;Chen, Ling-Yen;Hsueh, Hung-Chung;Li, Xin;Guo, Jing-Hua;Luo, Yi;Chiou, Jau-Wern;Wang, Wei-Hua;Wang, Po-Hsiang;Chen, Kuei-Hsien;Chen, Yen-Chih;Chen, Li-Chyong;Chen, Chia-Hao;Wang, Jian;Pong, Way-Faung
    日期: 2016-10-01
    上傳時間: 2016-10-22 02:10:40 (UTC+8)
    出版者: Pergamon Press
    摘要: We have demonstrated a nonlinear behavior for the bandgap opening of doped graphene by controlling the concentration of B and N co-dopants. X-ray absorption and emission spectra reveal that the bandgap increases from 0 to 0.6 eV as the concentration of BN dopants is increased from 0 to 6%, while the bandgap closes when the doping concentration becomes 56%. This nonlinear behavior of bandgap opening of the BN-doped graphene depending on the BN concentrations is consistent with the valence-band photoemission spectroscopic measurements. The spatially resolved B, N and C K-edge scanning transmission x-ray microscopy and their x-ray absorption near-edge structure spectra all support the scenario of the development of h-BN-like domains at high concentrations of BN. Ab initio calculation, by taking into account of the strong correlation between the bandgap and the geometry/concentration of the dopant, has been performed with various BN-dopant nano-domains embedded in the graphene monolayer to verify the unique bandgap behavior. Based on the experimental measurements and ab initio calculation, we propose the progressive formation of a phase-separated zigzag-edged BN domain from BN quantum dots with increasing BN-dopant concentration to explain the extraordinary nonlinear behavior of bandgap opening of BN-doped graphene sheets. This study reveals a new way to engineer the bandgap of low-dimensional systems.
    關聯: Carbon 107, pp.857-864
    DOI: 10.1016/j.carbon.2016.06.091
    顯示於類別:[物理學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    index.html0KbHTML206檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋