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作者:

Song, Zhi-Wei (Song, Zhi-Wei.) | Wang, Ru-Zhi (Wang, Ru-Zhi.) (学者:王如志) | Zhao, Wei (Zhao, Wei.) | Wang, Bo (Wang, Bo.) (学者:王波) | Yan, Hui (Yan, Hui.)

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摘要:

A zinc-blende (ZB) AIN and wurtzite (WZ) GaN mixed-phase (AGMP) nanostructured film was prepared by pulsed laser deposition on n-type Si (100) substrates. Compared with single-phase AIN or GaN film for field emission properties, the turn-on field of AGMP film is lowered from 17.8 to 1.2 V/mu m at 1,mu A/cm(2), and the FE current density of AGMP is raised up about four orders of magnitude. The striking FE enhancement effect of the mixed-phase structure may be partially originated from an efficient electron step-transport in mixed phase, which provides a most favorable emission energy level and greatly advances the supply of effective FE electrons. In addition, the AGMP nanofilm may help with electron transport, which is very different from the mixtures of ZB and WZ nanowires blocking electron transport in the recent report [Nano Lett. 2011, 11, 2424].

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作者机构:

  • [ 1 ] [Song, Zhi-Wei]Beijing Univ Technol, Coll Mat Sci & Engn, Lab Thin Film Mat, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Ru-Zhi]Beijing Univ Technol, Coll Mat Sci & Engn, Lab Thin Film Mat, Beijing 100124, Peoples R China
  • [ 3 ] [Zhao, Wei]Beijing Univ Technol, Coll Mat Sci & Engn, Lab Thin Film Mat, Beijing 100124, Peoples R China
  • [ 4 ] [Wang, Bo]Beijing Univ Technol, Coll Mat Sci & Engn, Lab Thin Film Mat, Beijing 100124, Peoples R China
  • [ 5 ] [Yan, Hui]Beijing Univ Technol, Coll Mat Sci & Engn, Lab Thin Film Mat, Beijing 100124, Peoples R China

通讯作者信息:

  • 王如志

    [Wang, Ru-Zhi]Beijing Univ Technol, Coll Mat Sci & Engn, Lab Thin Film Mat, Beijing 100124, Peoples R China

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来源 :

JOURNAL OF PHYSICAL CHEMISTRY C

ISSN: 1932-7447

年份: 2012

期: 2

卷: 116

页码: 1780-1783

3 . 7 0 0

JCR@2022

ESI学科: PHYSICS;

JCR分区:1

中科院分区:2

被引次数:

WoS核心集被引频次: 9

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