Local order of Sb and Bi dopants in hydrogenated amorphous germanium thin films studied by extended x-ray absorption fine structure

被引:6
作者
Dalba, G
Fornasini, P
Grisenti, R
Rocca, F
Chambouleyron, I
机构
[1] Univ Trent, Dipartimento Fis, I-38050 Trent, Italy
[2] Ist Nazl Fis Mat, I-38050 Trent, Italy
[3] CNR, Sez CeFSA Trento, Ist Foton & Nanotecnol, I-38050 Trent, Italy
[4] Univ Estadual Campinas, UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil
关键词
D O I
10.1063/1.1496137
中图分类号
O59 [应用物理学];
学科分类号
摘要
This letter reports on the investigation of the local order and coordination of Sb and Bi impurities in hydrogenated amorphous germanium thin films. The study uses the extended x-ray absorption fine structure technique in fluorescence mode at room temperature. The investigation includes doping concentrations ranging from 1.1x10(19) to 5x10(20) cm(-3). For both impurities, the evidence is that the thermal equilibrium model is not applicable in this case. This result qualitatively follows the behavior of Ga and In impurities in hydrogenated amorphous germanium (a-Ge:H) samples except for Bi. These findings are consistent with data on the transport properties of Sb- and Bi-doped a-Ge:H films. (C) 2002 American Institute of Physics.
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收藏
页码:625 / 627
页数:3
相关论文
共 12 条
  • [1] Real-space multiple-scattering calculation and interpretation of x-ray-absorption near-edge structure
    Ankudinov, AL
    Ravel, B
    Rehr, JJ
    Conradson, SD
    [J]. PHYSICAL REVIEW B, 1998, 58 (12): : 7565 - 7576
  • [2] BURMEISTER F, 1998, THESIS UPSALA U
  • [3] CAMPOMANES R, 2000, THESIS UNICAMP
  • [4] Local coordination and electronic doping of column III metals in hydrogenated amorphous germanium
    Chambouleyron, I
    Comedi, D
    Dalba, G
    Fornasini, P
    Grisenti, R
    Rocca, F
    [J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 2000, 266 : 726 - 729
  • [5] Internal stress-induced changes of impurity coordination and doping mechanisms in a-Ge:H doped with column III metals
    Chambouleyron, I
    Comedi, D
    Dalba, G
    Fornasini, P
    Grisenti, R
    Rocca, F
    [J]. SOLID STATE COMMUNICATIONS, 2000, 115 (02) : 89 - 93
  • [6] LOCAL DISORDER IN CRYSTALLINE AND AMORPHOUS-GERMANIUM
    DALBA, G
    FORNASINI, P
    GRAZIOLI, M
    ROCCA, F
    [J]. PHYSICAL REVIEW B, 1995, 52 (15): : 11034 - 11043
  • [7] Local coordination of Ga impurity in hydrogenated amorphous germanium studied by extended x-ray absorption fine-structure spectroscopy
    Dalba, G
    Fornasini, P
    Grisenti, R
    Rocca, F
    Comedi, D
    Chambouleyron, I
    [J]. APPLIED PHYSICS LETTERS, 1999, 74 (02) : 281 - 283
  • [8] Konigsberger D.C., 1988, XRAY ABSORPTION
  • [9] EDA - EXAFS DATA-ANALYSIS SOFTWARE PACKAGE
    KUZMIN, A
    [J]. PHYSICA B, 1995, 208 (1-4): : 175 - 176
  • [10] CONDUCTION IN NON-CRYSTALLINE MATERIALS .3. LOCALIZED STATES IN A PSEUDOGAP AND NEAR EXTREMITIES OF CONDUCTION AND VALENCE BANDS
    MOTT, NF
    [J]. PHILOSOPHICAL MAGAZINE, 1969, 19 (160): : 835 - &