金属光栅增强石墨烯宽谱响应光电探测器  

Metal grating enhanced graphene photodetector with wide spectral response

作　　者：王兰霞 余安琪 WANG Lanxia;YU Anqi(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《光学仪器》2024年第1期42-48,共7页Optical Instruments

摘　　要：光电探测器在通信、检测和医疗等领域应用广泛,随着航空航天、夜视、遥感、热成像、汽车互联和消费电子等行业的发展,人们对超宽带探测器的需求也越来越迫切。现有的超宽带探测是使用不同材料、不同探测频段的多个光电探测器,集成度不高,阻碍了上述应用的发展。因此设计了石墨烯微米条–金属光栅复合结构的光电探测器,该器件在太赫兹、红外和可见光波段都可产生光电响应。在可见光范围内,金属光栅将探测器的探测灵敏度从1.1 mA/W显著提高至2.5 mA/W。该研究为基于石墨烯的超宽带光电探测器的设计提供了新的思路。Photodetectors are widely used in communication,detection,medical and other fields.With the development of industries such as aerospace,night vision,remote sensing,thermal imaging,automotive interconnection and consumer electronics,the demand for ultra-wideband photodetectors is increasing.Existing ultrawide band detectors are multiple photodetectors using different materials and different detection bands,which are poorly integrated and restrict the development of the above applications.We design a graphene micron strip-metal grating composite structure photodetector.It provides a photoelectric response in the terahertz,infrared and visible spectral regions.In the visible region,the metal grating significantly increased the detection sensitivity from 1.1 mA/W to 2.5 mA/W.This work provides new ideas for the design of graphenebased ultra-wideband photodetectors.

关 键 词：石墨烯微米条 金属光栅微米条 光致栅控效应 测辐射热效应 

分 类 号：TN37[电子电信—物理电子学]