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一个ZnGa₂O₄扩展门场效应晶体管pH传感器的性能改进

Chia-Hsun Chen¹, Shu-Bai Liu², Sheng-Po Chang³

¹Institute of Electro-Optical and Material Science, National Formosa University, Yunlin 632301, Taiwan.

|April 8, 2024

概括

这项研究开发了一种新的氧化 (ZnGa2O4) 传感器,用于精确的pH检测. 经过优化后的薄膜表现出高灵敏度和线性,为先进的电化学传感应用铺平了道路.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
化学传感器化学传感器

背景情况:

金属氧化物半导体场效应晶体管 (MOSFET) 对于传感应用至关重要.
扩展门场效应晶体管 (EGFET) 为化学和生物传感提供了一个多功能平台.
开发稳定和敏感的pH传感材料对于各种应用是必不可少的.

研究的目的:

为基于EGFET的pH检测制造和表征ZnGa2O4传感膜.
为了研究喷过程中氧气比对薄膜特性和传感性能的影响.
为了评估化对ZnGa2O4 EGFET pH传感器性能的影响.

主要方法:

使用射频磁铁子喷射制备了 ZnGa2O4 传感膜.
电影与商业MOSFET集成,形成一个EGFET.
氧气流速变化以控制薄膜静脉测量.
在700°C进行火以优化薄膜结构.
灵敏度和线性测量在2-12的pH范围.

主要成果:

在恒定电流和恒定电压模式下,ZnGa2O4 EGFET表现出高灵敏度和线性.
在最佳的沉积条件下 (6%氧比) 产生了23.14mV/pH和33.49μA/pH的灵敏度.
在最佳条件下,线性值达到92.1%和96.15%.
化显著提高了ZnGa2O4 EGFET pH传感器的传感性能.

结论:

ZnGa2O4是开发高性能EGFET pH传感器的一个有希望的材料.
优化喷雾参数和采用化对于提高传感器灵敏度和稳定性至关重要.
开发的ZnGa2O4 EGFET传感器为准确的pH监测提供了一个可行的解决方案.

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