Doping graphene with carbon-based cage molecules for optoelectronic devices

Anupama B. Kaul

doi:10.1117/12.2570910

21 August 2020 Doping graphene with carbon-based cage molecules for optoelectronic devices

Anupama B. Kaul

Proceedings Volume 11465, Low-Dimensional Materials and Devices 2020; 114650G (2020) https://doi.org/10.1117/12.2570910
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Hybrid graphene photodetectors were prepared with endohedral fullerenes deposited on graphene using electrophoretic methods. Endohedral Sc3N@C80, which acts as an electron acceptor was used, and the ensuing electronic and optoelectronic properties were measured. Another endohedral fullerene, La@C82 adsorbed on graphene acted as an electron donor. Upon optical illumination, for the Sc₃N@C₈₀-graphene hybrid, the photoinduced free holes are injected into graphene, increasing the hole carrier concentration in graphene, while the photoexcited electrons remain in Sc₃N@C₈₀. We will discuss the photodetector response of these 0D-2D systems with both Sc₃N@C₈₀-graphene and La@C82-graphene hybrids. The exceptional performance gains achieved with both types of hybrid structures confirms the potential of endohedrals to dope graphene for high performance optoelectronic devices using a facile and scalable fabrication process.

Conference Presentation

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Anupama B. Kaul "Doping graphene with carbon-based cage molecules for optoelectronic devices", Proc. SPIE 11465, Low-Dimensional Materials and Devices 2020, 114650G (21 August 2020); https://doi.org/10.1117/12.2570910

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