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On the Working Mechanisms of Solid-State Double-Layer-Dielectric-Based Organic Field-Effect Transistors and Their Implication for Sensors

机译：在固态双层电介质基有机场效应晶体管的工作机制及其对传感器的含义

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Due to relatively low charge-carrier mobilities in organic materials, high operational voltages often have to be applied and result in severe limitations. While it has been reported that elastic polymeric dielectrics, containing a very low ion concentration, are able to overcome this bottleneck, a systematic study on the working mechanisms and their implications for sensors is still missing. Due to the possibility to form a double-layer capacitor while maintaining high insulating properties, such dielectrics enable stable low-voltage devices, giving access to high current output and high on/off ratio even below 0.5 V. Field-effect transistor devices are used to characterize this novel class of materials and to unravel their working mechanisms. To address their capability for sensors, a proof-of-concept experiment is performed, i.e., photoresponse is characterized and the field-effect dependence is analyzed. Stable low-voltage operation is a crucial issue, especially for biosensor applications which typically operate in physiological liquids and are limited by the small electrochemical window of water.
机译：由于有机材料中的电荷载流子迁移率相对较低，通常必须施加高运行电压并导致严重的限制。虽然据报道，含有非常低离子浓度的弹性聚合物电介质，能够克服这种瓶颈，这是对工作机制的系统研究及其对传感器的影响仍然缺失。由于在保持高绝缘性的同时形成双层电容器，这种电介质使得稳定的低压装置使得能够访问高电流输出和高开/关比甚至低于0.5 V.使用场效应晶体管器件表征这类新型材料，并解开了他们的工作机制。为了解决其对传感器的能力，执行概念证明实验，即，光孔表征，分析了场效应依赖性。稳定的低压操作是一个至关重要的问题，特别适用于通常在生理液体中操作的生物传感器应用，并且受到水的小电化学窗口的限制。

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