摘要
柔性有机光电晶体管(OPTs)在大机械形变的下一代可穿戴系统中至关重要.然而,目前报道的大多数OPTs都是场效应基结构,其界面电荷传输和本征低跨导的特性限制了OPTs的机械柔性和光电性能的发展.此外,沟道层的p共轭半导体聚合物也缺乏特殊的可修复位点,使其很难实现薄膜的自我修复功能.本文报道了一个具有独特体沟道和强修复功能的柔性高光电性能的OPTs.该OPTs使用有机电化学晶体管架构,由3D体沟道的可修复导电聚合物/水凝胶复合薄膜组成.该器件不仅在遭受损伤后能够在100 ms内有效恢复其机械和电学性能,同时还展现出出色的机械柔性.更重要的是,该器件实现了紫外光波段的高光测性能,其中光响应度高达1.01×10^(5)A W^(-1),探测率达1.01×10^(5)A W^(-1),外量子效率达3.03×104%.结果表明,具有独特体沟道和本征可修复功能的OPTs在下一代可穿戴电子器件的使用中具有潜在应用价值.
The flexible organic phototransistors(OPTs)are crucial for next-generation wearable systems for applications where large mechanical deformation is involved.However,most of the reported OPTs utilizing the field-effect transistor(FET)architecture suffer from undesired mechanical flexibility and limited performance due to their interfacial charge transport and inherently low transconductance;moreover,theirπ-conjugated semiconductor polymers that serve as channels lack specific healing sites,making it difficult to intrinsically heal themselves.Herein,a more flexible and high-performance OPT with enhanced interfacial charge transport via novel volumetric channel and strong healing capability is developed for the first time.This OPT utilizes an organic electrochemical transistor architecture that consists of intrinsically healing conducting polymer/hydrogel composite films with three-dimensional volumetric channels.Such devices not only efficiently restore their mechanical and electrical performance in 100 ms after undergoing severe damage but also exhibit excellent mechanical flexibility without obviously degraded performance.More importantly,the self-healing OPTs exhibit high performance with a responsivity as high as 1.01×10^(5)A W^(-1),detectivity of 1.75×10^(12)Jones,and high external quantum efficiency of 3.03×104%,higher than those of the majority of the reported FET-based OPTs.All of these results indicate that these novel and intrinsically self-healing OPTs with volumetric channels are ideal for use in next-generation wearable devices.
作者
严育杰
朱晓婷
张国成
汪秀梅
韩笑
李伟洲
孙东亚
李月婵
王义
谢安
陈惠鹏
Yujie Yan;Xiaoting Zhu;Guocheng Zhang;Xiumei Wang;Xiao Han;Weizhou Li;Dongya Sun;Yuechan Li;Yi Wang;An Xie;Huipeng Chen(School of Materials Science and Engineering,Xiamen University of Technology,Key Laboratory of Functional Materials and Applications of Fujian Province,Xiamen Key Laboratory of High Performance Metals and Materials,Xiamen University,Xiamen,361024,China;Institute of Optoelectronic Display,National&Local United Engineering Laboratory of Flat Panel Display Technology,Fuzhou University,Fuzhou,350002,China;Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou,350207,China;Fujian University of Technology,Fuzhou,350108,China;School of Engineering,Anhui Agricultural University,Hefei,230036,China)
基金
supported by the National Natural Science Foundation of China(62304189 and 62304002)
the Natural Science Foundation of Xiamen City(3502Z20227063)
the Natural Science Foundation of Fujian Province(2023J011450 and 2023J011452)
the Key Technologies Innovation and Industrialization Projects of Fujian Province(2023XQ022)
the National Natural Science Foundation of China Joint Fund for Cross-strait Scientific and Technological Cooperation(U2005212)
the Open Fund of Xiamen Key Laboratory of High Performance Metal and Materials of Xiamen University。
