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Sensitivity of CuS and CuS/ITO EGFETs implemented as pH sensors

机译：用作pH传感器的CuS和CuS / ITO EGFET的灵敏度

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摘要

Several studies have been performed on the use of ITO as an extended gate of field effect transistor. Studies have also been done on the effects of using ITO as a substrate to improve the sensitivity of SnO_2 membrane. In this research, the ITO was used as a substrate for the synthesis of CuS thin films to determine its potential to improve sensitivity and any possible application as pH sensors. The CuS thin film was prepared from copper chloride and sodium thiosulfate via spray pyrolysis deposition using de-ionized water as a solvent. The sensitivity of the CuS/ITO membrane was measured and comparatively analyzed against that of CuS membrane. Structural and morphological properties were investigated for both as-deposit thin films. The membranes were then deployed as pH sensors and their sensitivities measured. The results confirmed that CuS/ITO membrane had much better sensitivity (37 μA/pH and 37 mV/pH) compared to CuS membrane (8 μA/pH and 7.5 mV/pH).
机译：关于使用ITO作为场效应晶体管的扩展栅极已经进行了一些研究。还研究了使用ITO作为基质改善SnO_2膜灵敏度的效果。在这项研究中，ITO被用作合成CuS薄膜的基质，以确定其提高灵敏度的潜力以及作为pH传感器的任何可能的应用。使用去离子水作为溶剂由氯化铜和硫代硫酸钠经喷雾热解沉积制备CuS薄膜。测量CuS / ITO膜的灵敏度，并与CuS膜的灵敏度进行比较分析。研究了两种沉积薄膜的结构和形态特性。然后将膜部署为pH传感器并测量其灵敏度。结果证实，与CuS膜（8μA/ pH和7.5 mV / pH）相比，CuS / ITO膜具有更好的灵敏度（37μA/ pH和37 mV / pH）。

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  • 来源
    《Applied Physics》 |2016年第9期|839.1-839.6|共6页
  • 作者

    Fayroz A. Sabah; Naser M. Ahmed; Z. Hassan; Naif H. Al-Hardan;

  • 作者单位

    Institute of Nano-Optoelectronics Research and Technology (INOR), School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia,Department of Electrical Engineering, College of Engineering, Al-Mustansiriya University, Baghdad, Iraq;

    Institute of Nano-Optoelectronics Research and Technology (INOR), School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia;

    Institute of Nano-Optoelectronics Research and Technology (INOR), Universiti Sains Malaysia, 11800 Penang, Malaysia;

    School of Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia;

  • 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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