Monolayer Graphene/Germanium Schottky Junction As High-Performance Self-Driven Infrared Light Photodetector

• Published in: ACS applied materials & interfaces Vol. 5; no. 19; pp. 9362 - 9366
• Main Authors: Zeng, Long-Hui, Wang, Ming-Zheng, Hu, Han, Nie, Biao, Yu, Yong-Qiang, Wu, Chun-Yan, Wang, Li, Hu, Ji-Gang, Xie, Chao, Liang, Feng-Xia, Luo, Lin-Bao
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 09.10.2013
• Subjects: detection limit; Equipment Design; germanium; Germanium - chemistry; graphene; Graphite - chemistry; infrared radiation; Infrared Rays; Light; Semiconductors; Silicon - chemistry; Schottky junction; response speed; infrared photodetector; heterojunction; photovoltaic effect

We report on the simple fabrication of monolayer graphene (MLG)/germanium (Ge) heterojunction for infrared (IR) light sensing. It is found that the as-fabricated Schottky junction detector exhibits obvious photovoltaic characteristics, and is sensitive to IR light with high I light/I dark ratio of 2...