Electronic states and optical properties of silicon nanocrystals terminated by dimers

被引：12
|
作者：
Nishida, M [1 ]
机构：
[1] Kanazawa Inst Technol, Dept Phys, Nonoichi, Ishikawa 9218501, Japan
来源：
SOLID STATE COMMUNICATIONS | 2000年 / 116卷 / 12期
关键词：
nanostructures; semiconductors; electronic states (localized); optical properties;
D O I：
10.1016/S0038-1098(00)00407-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
An electronic state calculation for Si nanocrystals terminated by Si-Si dimers is reported by using the extended Huckel-type nonorthogonal tight-binding method. It is shown that dimer-related surface states appear in the range up to 1 eV below the conduction band edge in all the Si nanocrystals studied, in good agreement with experimentally observed electron trap states in porous Si, and that these surface states in the dimer configuration have stronger optical coupling with the valence band edge in Si nanocrystals than the conduction band edge in the dihydride-terminated configuration, explaining a significant part of the mechanisms governing the luminescence properties of porous Si. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：655 / 659
页数：5
相关论文
共 50 条
  • [1] Electronic states and optical properties of silicon nanocrystals
    Guzmán, D
    Corona, U
    Cruz, M
    JOURNAL OF LUMINESCENCE, 2003, 102 : 487 - 491
  • [2] Optical properties of hydrogen terminated silicon nanocrystals
    Kanemitsu, Y
    Okamoto, S
    SOLID-STATE ELECTRONICS, 1998, 42 (7-8) : 1315 - 1318
  • [3] Electronic, structural and optical properties of hydrogenated silicon nanocrystals: the role of the excited states
    Cantele, G
    Degoli, E
    Luppi, E
    Magri, R
    Ninno, A
    Bisi, O
    Ossicini, S
    Iadonisi, G
    Physica Status Solidi C - Conferences and Critical Reviews, Vol 2, No 9, 2005, 2 (09): : 3263 - 3267
  • [4] Electronic and optical properties of agglomerated hydrogen terminated silicon nanoparticles
    Francis, Priya
    Patil, Sumati
    Rajesh, Chiranjib
    Chakraborty, Sudip
    Mahamuni, Shailaja
    Dharmadhikari, Chandrakant V.
    Ghaisas, Subhash V.
    EUROPEAN PHYSICAL JOURNAL D, 2013, 67 (07): : 1 - 8
  • [5] Electronic and optical properties of agglomerated hydrogen terminated silicon nanoparticles
    Priya Francis
    Sumati Patil
    Chiranjib Rajesh
    Sudip Chakraborty
    Shailaja Mahamuni
    Chandrakant V. Dharmadhikari
    Subhash V. Ghaisas
    The European Physical Journal D, 2013, 67
  • [6] Electronic and optical properties of silicon nanocrystals: Structural effects
    Degoli, E
    Ossicini, S
    Luppi, M
    Luppi, E
    Magri, R
    Cantele, G
    Ninno, D
    OPTOELECTRONICS OF GROUP-IV-BASED MATERIALS, 2003, 770 : 57 - 62
  • [7] Electronic structure and optical properties of silicon nanocrystals along their aggregation stages
    Bulutay, C.
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2007, 38 (1-2): : 112 - 117
  • [8] Pseudopotentials on Grids: Application to the Electronic, Optical, and Vibrational Properties of Silicon Nanocrystals
    Chelikowsky, James R.
    Saad, Yousef
    Chan, Tzu-Liang
    Tiago, Murilo L.
    Zayak, A. T.
    Zhou, Yunkai
    JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE, 2009, 6 (06) : 1247 - 1261
  • [9] Optical properties of silicon nanocrystals
    Kovalev, D
    Heckler, H
    Polisski, G
    Diener, J
    Koch, F
    OPTICAL MATERIALS, 2001, 17 (1-2) : 35 - 40
  • [10] Joint density of electronic states in silicon nanocrystals
    Künzner, N
    Kovalev, D
    Diener, J
    Heckler, H
    Polisski, G
    Koch, F
    PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 2000, 182 (01): : 379 - 383
12345