利用石墨烯增强圆偏振光探测器性能OA
Enhancing the Performance of Circularly Polarized Light Detectors Using Graphene
圆偏振光(Circularly Polarized Light,CPL)探测器的活性层多为手性有机材料,针对其存在响应速度慢、光电流弱和对CPL区分度低等问题,文中通过溶剂诱导法诱导有机聚合物聚(3-己基噻吩)(P3HT)超分子自组装成手性纳米线(nanowire,nw)结构.以手性nw-P3HT为活性层的光电探测器能够探测CPL,并且对光具有灵敏的响应度和较好的稳定性,但光电流较小.利用石墨烯作为载流子收集装置优化了器件结构,有效提升了CPL探测器的性能.引入石墨烯使CPL探测器的光电流提升了5 个数量级,上升时间缩短了16%,下降时间缩短了20%.以石墨烯为载流子收集装置的探测器对CPL的区分能力提升了 30%.利用石墨烯增强CPL探测器的策略在光学成像和光学传感器中具有潜在的应用价值.
The active layers of CPL(Circularly Polarized Light)detectors are mostly chiral organic materials.In view of the problems such as slow response speed,weak photocurrent,and low discrimination of CPL,the solvent-induced method is used to induce the supramolecular self-assembly of the organic polymer poly(3-hexylthiophene)(P3HT)into a chiral nw(nanowire)structure.The photodetector with chiral nw-P3HT as the active layer can detect CPL,and has a sensitive responsivity to light and good stability,but the photocurrent is small.Graphene is used as a carrier collection device to optimize the device structure,effectively improving the performance of the CPL detector.The introduction of graphene increases the photocurrent of the CPL detector by five orders of magnitude,shortens the rise time by 16%,and shortens the fall time by 20%.The discrimination ability of the detector with graphene as the carrier collection device for CPL is increased by 30%.The strategy of using graphene to enhance the CPL detector has potential application values in optical imaging and optical sensors.
TONG Bin;WANG Zhongxuan;XIE Yuee;CHEN Yuanping
School of Physics and Electronic Engineering,Jiangsu University,Zhenjiang 212013,China||Jiangsu Engineering Research Center on Quantum Perception and Intelligent Detection of Agricultural Information,Zhenjiang 212013,ChinaSchool of Physics and Electronic Engineering,Jiangsu University,Zhenjiang 212013,China||Jiangsu Engineering Research Center on Quantum Perception and Intelligent Detection of Agricultural Information,Zhenjiang 212013,ChinaSchool of Physics and Electronic Engineering,Jiangsu University,Zhenjiang 212013,China||Jiangsu Engineering Research Center on Quantum Perception and Intelligent Detection of Agricultural Information,Zhenjiang 212013,ChinaSchool of Physics and Electronic Engineering,Jiangsu University,Zhenjiang 212013,China||Jiangsu Engineering Research Center on Quantum Perception and Intelligent Detection of Agricultural Information,Zhenjiang 212013,China
信息技术与安全科学
手性材料手性诱导有机超分子材料超分子自组装二维材料石墨烯圆偏振光有机光电探测器
chiral materialschiral inductionorganic supramolecular materialssupramolecular self-assemblytwo-dimensional materialsgraphenecircularly polarized lightrganic photodetector
《电子科技》 2026 (2)
54-60,7
国家自然科学基金(12174157,12074150,12204198)National Natural Science Foundation of China(12174157,12074150,12204198)
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