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作者:

Su, Xueqiong (Su, Xueqiong.) | Pan, Yong (Pan, Yong.) | Gao, Dongwen (Gao, Dongwen.) | Li, Shufeng (Li, Shufeng.) | Wang, Jin (Wang, Jin.) | Wang, GuiSheng (Wang, GuiSheng.) | Wang, Rongping (Wang, Rongping.) | Wang, Li (Wang, Li.) (学者:王丽)

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EI SCIE

摘要:

The resistance of chalcogenide glass GexAsySe1-x-y film is difficult to be observed due to the electrons pinned near the Fermi level, the large electron binding energy, and the large film resistance. Because the resistance is too large, the test method of Hall effect cannot be used to investigate the electrical properties for chalcogenide glass. In this work, the resistance relaxation states of a series of Ge(x)As(y)Se(1-x-y )films with different components are observed by reducing the resistance under non-equilibrium temperature conditions from 300 to 440 K, and then the local state electron transport mechanism is investigated. It is interesting that the electrical properties parameters show three relaxation states: 1) The conventional trend is that the conductivity decreases with the increase of temperature. 2) One particular trend is that the resistance presents a wavy shape as the temperature increases. 3) The most special trend is that as the temperature is raised during the conductivity measurements, the conductivity increases before decreases after having reach a certain temperature. Computer calculation results show that the Boltzmann fit formula is more suitable than simply Boltzmann formula for GexAsySe1-x-y halcogenide film in terms of a low-mobility semiconductor with deep Fermi level and hopping conduction. Through calculations, it is found that three relaxation states are decided by the density of the localized states at Fermi level.

关键词:

Chalcogenide glasses Electrical conductivity Germanium antimony selenide GexAsySe1-x-y Conduction mechanisms Thermal evaporation Thin films

作者机构:

  • [ 1 ] [Su, Xueqiong]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
  • [ 2 ] [Pan, Yong]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
  • [ 3 ] [Gao, Dongwen]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Shufeng]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
  • [ 5 ] [Wang, Jin]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
  • [ 6 ] [Wang, GuiSheng]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
  • [ 7 ] [Wang, Li]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China
  • [ 8 ] [Wang, Rongping]Australian Natl Univ, Ctr Ultrahigh Bandwidth Devices Opt Syst, Laser Phys Ctr, Canberra, ACT 2600, Australia

通讯作者信息:

  • 王丽

    [Su, Xueqiong]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China;;[Wang, Li]Beijing Univ Technol, Coll Appl Sci, Beijing 100124, Peoples R China

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来源 :

THIN SOLID FILMS

ISSN: 0040-6090

年份: 2020

卷: 709

2 . 1 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:37

JCR分区:3

被引次数:

WoS核心集被引频次: 2

SCOPUS被引频次: 2

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

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