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Improvement in the performance of ZnO thin film transistors by using ultralow-pressure sputtering

机译:通过超低压溅射提高ZnO薄膜晶体管的性能

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摘要

Thin film transistors (TFTs) were fabricated with a zinc oxide (ZnO) channel deposited by ultralow-pressure sputtering (ULPS) at a pressure less than 1.3×10~(-3) Pa. The field-effect mobility (μ_(FE)) and the subthreshold gate swing (SS) of the ULPS-ZnO TFTs were dramatically improved up to 8.5 cm~2/V s and 0.31 V/decade, respectively, compared to 1.6 cm~2/V s and 1.31 V/decade for the ZnO TFTs fabricated by a conventional sputtering pressure (CSP) of 6.7 X10~(-1) Pa. The improved characteristics of the ULPS-ZnO TFTs compared to the CSP-ZnO one can be attributed to the greater densification of the ZnO semiconductor film at the lower deposition pressure.
机译:利用超低压溅射(ULPS)在小于1.3×10〜(-3)Pa的压力下沉积的氧化锌(ZnO)通道制造薄膜晶体管(TFT)。场效应迁移率(μ_(FE) )和ULPS-ZnO TFT的亚阈值栅极摆幅(SS)分别高达8.5 cm〜2 / V s和0.31 V / decade分别显着提高,分别为1.6 cm〜2 / V s和1.31 V / decade用6.7 X10〜(-1)Pa的常规溅射压力(CSP)制成的ZnO TFT。与CSP-ZnO相比,ULPS-ZnO TFT的特性有所改善,这可以归因于ZnO半导体膜的更大致密化在较低的沉积压力下。

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  • 来源
    《Journal of Vacuum Science & Technology》 |2011年第3期|p.031201.1-031201.5|共5页
  • 作者单位

    Department of Materials Science and Engineering and Inter-University Semiconductor Research Center,Seoul National University, Seoul 151-744, Korea and R&D Center, Samsung Mobile Display, Co.,Ltd., Gyeonggi-do, 449-902, Korea;

    Department of Materials Science and Engineering and Inter-University Semiconductor Research Center,Seoul National University, Seoul 151-744, Korea;

    Department of Materials Science and Engineering and Inter-University Semiconductor Research Center,Seoul National University, Seoul 151-744, Korea;

    Department of Materials Science and Engineering and Inter-University Semiconductor Research Center,Seoul National University, Seoul 151-744, Korea;

    Department of Materials Science and Engineering and Inter-University Semiconductor Research Center,Seoul National University, Seoul 151-744, Korea;

    Department of Materials Science and Engineering, Inha University, Incheon 402-751, Korea;

    Department of Materials Science and Engineering and Inter-University Semiconductor Research Center,Seoul National University, Seoul 151-744, Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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