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用有机半导体并五苯作为有源层,聚四氟乙烯作为绝缘层,采用全蒸镀方式在真空室一次性制备了正装结构的有机薄膜场效应晶体管(OTFT)。薄的有机绝缘层使得器件工作在低电压下,有机薄膜场效应晶体管易于与显示像素(有机发光二极管(OLED))集成在同一个透明的刚性或者柔性衬底上。研究了有机薄膜场效应晶体管的源漏接触电阻和沟道电阻对器件性能的影响,结果表明接触电阻是影响器件性能的主要因素。在透明的玻璃衬底上实现了有机薄膜场效应晶体管对同一衬底上100μm×200μm红色有机发光二极管的驱动。
Organic thin-film field-effect transistor (OTFT) was fabricated by using all-solid-state semiconductor with pentacene as active layer and polytetrafluoroethylene (PTFE) as insulating layer and all-evaporation method in vacuum chamber. The thin organic insulating layer allows the device to operate at low voltages, and the organic thin film field effect transistors are easily integrated with display pixels (organic light emitting diodes (OLEDs)) on the same transparent rigid or flexible substrate. The effects of source-drain contact resistance and channel resistance on the device performance of the organic thin-film field-effect transistor are investigated. The results show that the contact resistance is the main factor affecting the device performance. The organic thin film field effect transistor is driven on a transparent glass substrate to drive a 100 μm × 200 μm red organic light emitting diode on the same substrate.