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Strategies for Improving the Performance of Sensors Based on Organic Field-Effect Transistors

机译：基于有机场效应晶体管的传感器性能改进策略

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Organic semiconductors (OSCs) have been extensively studied as sensing channel materials in field-effect transistors due to their unique charge transport properties. Stimulation caused by its environmental conditions can readily change the charge-carrier density and mobility of OSCs. Organic field-effect transistors (OFETs) can act as both signal transducers and signal amplifiers, which greatly simplifies the device structure. Over the past decades, various sensors based on OFETs have been developed, including physical sensors, chemical sensors, biosensors, and integrated sensor arrays with advanced functionalities. However, the performance of OFET-based sensors still needs to be improved to meet the requirements from various practical applications, such as high sensitivity, high selectivity, and rapid response speed. Tailoring molecular structures and microanofilm structures of OSCs is a vital strategy for achieving better sensing performance. Modification of the dielectric layer and the semiconductor/dielectric interface is another approach for improving the sensor performance. Moreover, advanced sensory functionalities have been achieved by developing integrated device arrays. Here, a brief review of strategies used for improving the performance of OFET sensors is presented, which is expected to inspire and provide guidance for the design of future OFET sensors for various specific and practical applications.
机译：由于有机半导体（OSC）具有独特的电荷传输特性，因此已广泛研究作为场效应晶体管中的传感沟道材料。由其环境条件引起的刺激可轻易改变OSC的电荷载流子密度和迁移率。有机场效应晶体管（OFET）既可以充当信号转换器，也可以充当信号放大器，从而大大简化了器件结构。在过去的几十年中，已经开发了各种基于OFET的传感器，包括物理传感器，化学传感器，生物传感器以及具有先进功能的集成传感器阵列。但是，基于OFET的传感器的性能仍然需要提高，以满足各种实际应用的要求，例如高灵敏度，高选择性和快速响应速度。调整OSC的分子结构和微/纳米膜结构是实现更好的传感性能的重要策略。介电层和半导体/介电界面的修改是用于改善传感器性能的另一种方法。此外，通过开发集成设备阵列已经实现了先进的感觉功能。在这里，我们将简要介绍用于改善OFET传感器性能的策略，以期启发并为各种特定和实际应用的未来OFET传感器设计提供指导。

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