柔性摩擦光电子学器件研究

摩擦电子学是摩擦电与半导体效应耦合的新研究领域，本项目拟进一步耦合光激发效应，开展柔性摩擦光电子学器件研究。首先提出一种基于纳米结构薄膜和有机半导体发光材料的柔性浮栅式摩擦电子学发光晶体管，通过接触起电使浮栅层表面产生电荷，用于调控半导体层中的载流子输运和复合特性，探索接触起电对电致发光的调控机制以及触摸发光的主动式人机交互技术；此外，采用二维半导体光敏材料作为沟道层，研制柔性摩擦电子学光电晶体管，研究接触起电对光电导特性的调控作用，探索主动式增强的光电探测技术；最后，基于二维半导体材料研制柔性摩擦电子学光致发光器件，探索接触起电对光致发光特性的调控作用。本项目的开展将深入理解摩擦电对光电子器件的调控机理，扩展摩擦电子学材料体系，实现摩擦电、半导体、光激发效应三元耦合的摩擦光电子学器件，并为人机交互、微纳光机电系统、传感和自驱动系统等技术的发展和应用提供全新的思路与途径。

Tribotronics is a new field by coupling triboelectricity and semiconductor. By further introducing optoelectronics, several flexible tribo-phototronic devices will be investigated in this project. First, a flexible floating-gate tribotronic light-emitting transistor based on nanostructured thin film and organic semiconductor light-emitting material will be proposed. With the generated charges on the floating-gate surface by the contact electrification, the charge carrier transport and recombination in flexible transistor can be tuned/controlled, aiming at investigating the modulation mechanism of the electroluminescence properties and active human-computer interaction technique of touch-induced luminescence. Moreover, with the two-dimensional photosensitive semiconductor material as the channel, a flexible tribotronic phototransistor will be proposed, aiming at exploring the photoconductive properties tuned/controlled by the contact electrification and actively enhanced photodetection technique. Finally, a flexible tribotronic photoluminescence device based on the two-dimensional semiconductor material will be proposed, aiming at exploring the photoluminescence tuned/controlled by the contact electrification. This project will clarify the triboelectric modulation mechanism on optoelectronics, extend the tribotronic material system, and develop the tribo-phototronics by three-way coupling among triboelectricity, semiconductor, and photoexcitation. This project can provide novel ideas and approaches for the developments and applications of human-computer interaction, optical MEMS/NEMS, sensing and self-powered system in the near future.