Scholarlink

<p>This study reports the fabrication and characterization of zinc tin oxide (ZTO) thin-film transistor (TFT)-based pH sensors featuring an extended indium tin oxide (ITO) gate electrode. Utilizing scalable and cost-effective spin-coating deposition methods, we optimized the annealing temperature and duration to enhance the electrical performance of ZTO TFTs, resulting in increased mobility and stable transfer characteristics. The developed pH sensor demonstrated a linear and positive shift in threshold voltage with rising pH levels, achieving an impressive sensitivity of 94&#xa0;mV/pH and an R<sup>2</sup> value of 0.99, underscoring its reliable pH-sensing capabilities. In addition, time-resolved measurements of the drain-source current at a constant gate-source voltage of 1&#xa0;V validated the pH-dependent response, revealing a consistent decrease in current with increasing pH. The adoption of chemical solution deposition techniques highlights the scalability and cost-efficiency of the fabrication process, paving the way for integrating ZTO TFT-based pH sensors into enzymatic biosensors for home-diagnostic applications</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Fabrication and Optimization of Chemically Processed Zn-Sn-O TFTs with ITO Electrodes for pH Sensing

  • 期刊论文

  • 发表日期：

    2025年9月27日

查看全文
  • Franciszek Witkowski,
  • Malwina Szymaniec,
  • Faustyna Brańko,
  • Ewelina Białek,
  • Jakub Kaczmarski

摘要

This study reports the fabrication and characterization of zinc tin oxide (ZTO) thin-film transistor (TFT)-based pH sensors featuring an extended indium tin oxide (ITO) gate electrode. Utilizing scalable and cost-effective spin-coating deposition methods, we optimized the annealing temperature and duration to enhance the electrical performance of ZTO TFTs, resulting in increased mobility and stable transfer characteristics. The developed pH sensor demonstrated a linear and positive shift in threshold voltage with rising pH levels, achieving an impressive sensitivity of 94 mV/pH and an R2 value of 0.99, underscoring its reliable pH-sensing capabilities. In addition, time-resolved measurements of the drain-source current at a constant gate-source voltage of 1 V validated the pH-dependent response, revealing a consistent decrease in current with increasing pH. The adoption of chemical solution deposition techniques highlights the scalability and cost-efficiency of the fabrication process, paving the way for integrating ZTO TFT-based pH sensors into enzymatic biosensors for home-diagnostic applications