Role of defect states in functionalized graphene photodetectors

Jake D. Mehew; Matthew D. Barnes; Marc Dubois; Monica F. Craciun; Saverio Russo

doi:10.1117/12.2273987

24 August 2017 Role of defect states in functionalized graphene photodetectors

Jake D. Mehew, Matthew D. Barnes, Marc Dubois, Monica F. Craciun, Saverio Russo

Proceedings Volume 10345, Active Photonic Platforms IX; 103450V (2017) https://doi.org/10.1117/12.2273987
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States

Abstract

The functionalization of graphene can enhance the optoelectronic properties of graphene, allowing the creation of highly sensitive broadband photodetectors. Presently, the role played by defects, induced by the functionalization of graphene, on the performance of graphene photodetectors is not well understood. Here, we investigate the optoelectronic properties of van der Waals heterostructures comprising of graphene and a functionalized partner, formed by pristine and fluorinated graphene. We find that the electrical properties of graphene are preserved upon formation of the heterostructure. A negligible charge transfer is observed across the interface between the two materials which limits the performance of the photodetector due to the vertical separation of the two materials.

Conference Presentation

Citation Download Citation

Jake D. Mehew, Matthew D. Barnes, Marc Dubois, Monica F. Craciun, and Saverio Russo "Role of defect states in functionalized graphene photodetectors", Proc. SPIE 10345, Active Photonic Platforms IX, 103450V (24 August 2017); https://doi.org/10.1117/12.2273987

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