Surface plasmon enhanced GeSn photodetectors operating at 2 μm

• Main Authors: Zhou, Hao, Zhang, Lin, Tong, Jinchao, Wu, Shaoteng, Son, Bongkwon, Chen, Qimiao, Zhang, Dao Hua, Tan, Chuan Seng
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Engineering::Electrical and electronic engineering::Semiconductors; Germanium; Photodetector
• Online Access: https://hdl.handle.net/10356/146734
• Institution: Nanyang Technological University

Au-hole array and Au-GeSn grating structures were designed and incorporated in GeSn metal-semiconductor-metal (MSM) photodetectors for enhanced photo detection at 2 µm. Both plasmonic structures are beneficial for effective optical confinement near the surface due to surface plasmon resonance (SPR),...