Near-infrared photodetectors based on embedded graphene

In last years, the introduction of 2-dimensional materials such as graphene has revolutionized the world of silicon photonics. In this work, we demonstrate a new approach for integrating graphene into silicon-based photodetectors. We leverage a thin film of hydrogenated amorphous silicon to embed th...

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Bibliographic Details
Published in:EPJ Web of conferences 2023, Vol.287, p.1005
Main Authors: Crisci, Teresa, Maccagnani, Piera, Moretti, Luigi, Summonte, Caterina, Gioffrè, Mariano, Rizzoli, Rita, Medugno, Mario, Iodice, Mario, Coppola, Giuseppe, Casalino, Maurizio
Format: Article
Language:English
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Summary:In last years, the introduction of 2-dimensional materials such as graphene has revolutionized the world of silicon photonics. In this work, we demonstrate a new approach for integrating graphene into silicon-based photodetectors. We leverage a thin film of hydrogenated amorphous silicon to embed the graphene within two different photonic structures, an optical Fabry-Pérot microcavity, and a waveguide, achieving a stronger light-matter interaction. The investigated devices have shown promising performance resulting in responsivities as high as 27 mA/W and 0.15 A/W around 1550 nm, respectively.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/202328701005