基于局域表面等离激元效应的石墨烯光电探测器光吸收性能的研究  

Light Absorption Performance of Graphene Photodetector Based on Localized Surface Plasmon Resonance Effect

作　　者：徐琦霖 孙科学[1,2] Xu Qilin;Sun Kexue(College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing University of Posts and Telecommunications,Nanjing 210023,Jiangsu,China;Nation and Local Joint Engineering Laboratory of RF Integration&Micro-Assembly Technology,Nanjing 210023,Jiangsu,China)

机构地区：[1]南京邮电大学电子与光学工程学院、柔性电子(未来技术)学院,江苏南京210023 [2]射频集成与微组装技术国家地方联合工程实验室,江苏南京210023

出　　处：《激光与光电子学进展》2024年第5期119-124,共6页Laser & Optoelectronics Progress

基　　金：江苏省研究生实践创新计划(SJCX21_0279);国家自然科学基金(11304160);南京邮电大学国自孵化项目(NY220013)。

摘　　要：为了解决硅纳米线光电探测器光吸收率较低的问题,构造了一种六边形硅纳米线结构的光电探测器,并在该结构上覆盖零带隙的石墨烯,同时加入Au光栅,最后利用COMSOL软件对器件结构进行建模分析。研究表明,在0.5~1.5μm光波段范围内,石墨烯的覆盖和Au光栅的加入能有效提升器件的光吸收性能,并且石墨烯与Au光栅的厚度均对该器件性能有所影响。In order to solve the problem of low light absorption of silicon nanowire photodetector,we construct a hexagonal silicon nanowire structure of photodetector.We cover the structure with zero-bandgap graphene and add Au grating at the same time,and finally use COMSOL software to model and analyze the structure.It is shown that in the optical band range between 0.5μm and 1.5μm,the graphene coverage and the Au grating can effectively enhance the light absorption performance of the device.What is more,the thickness of both graphene and Au grating has an effect on the performance of the device.

关 键 词：纳米线光电探测器 光吸收率 石墨烯 LSPR效应 COMSOL软件 

分 类 号：O436[机械工程—光学工程]