The modulus spectra of organic field-effect transistors (OFETs) with electrode overlap and peripheral regions have been experimentally and theoretically investigated. The complex impedance of regioregular poly(3-hexylthiophene-2,5-diyl) (P3HT) OFETs with electrode overlap and peripheral regions was measured with a frequency response analyzer. The complex modulus was derived from an equivalent circuit of OFETs with overlap and peripheral regions using a four-terminal matrix approach. The modulus spectra of the P3HT OFETs were successfully fitted by those calculated using the expression derived from the equivalent circuit. Three structures were found in the modulus spectra of the P3HT OFETs owing to the dielectric properties of the gate insulator, transport properties of the organic semiconductor, and contact resistance from the low to high frequency ranges. The resistivity of the gate insulators and the field-effect mobility of working OFETs were determined using the values of the circuit components of the equivalent circuit obtained by fitting.

中文翻译：

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具有电极重叠和外围区域的有机场效应晶体管的模量谱的解释：栅极绝缘体和有机半导体的电子特性的测定

具有电极重叠和外围区域的有机场效应晶体管 (OFET) 的模量光谱已经通过实验和理论研究。使用频率响应分析仪测量具有电极重叠和外围区域的区域规则聚（3-己基噻吩-2,5-二基）（P3HT）OFET 的复阻抗。复数模量来自使用四端矩阵方法的具有重叠和外围区域的 OFET 等效电路。P3HT OFET 的模量谱通过使用等效电路导出的表达式计算的那些成功拟合。由于栅极绝缘体的介电特性，有机半导体的传输特性，在 P3HT OFET 的模量谱中发现了三种结构。以及从低频到高频范围的接触电阻。使用通过拟合获得的等效电路的电路元件值来确定栅极绝缘体的电阻率和工作 OFET 的场效应迁移率。