Enhanced Performance of a Visible Light Detector Made with Quasi-Free-Standing Graphene on SiC.

ABSTRACT: The excellent optoelectronic properties of graphene give it great potential for applications in optical detection. Among the graphenes obtained through many synthetic methods, epitaxial graphene obtained by thermal decomposition on silicon carbide has remarkable advantages for preparing photodetectors. In this research, epitaxial graphene has been successfully prepared on a silicon surface (0001) of semi-insulating 4H-SiC substrate with a size of 10 mm × 10 mm and epitaxial graphene has been converted to quasi-free-standing graphene by hydrogen passivation. Two metal-graphene-metal photodetectors were fabricated using the two types of graphenes above and the photo-absorption properties of detectors have been investigated under 650-nm laser illumination with different illumination powers. F

SUBMITTER: Li X 

PROVIDER: S-EPMC6804206 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature