Unbiased Plasmonic-Assisted Integrated Graphene Photodetectors
- Vangelidis, Ioannis
- Bellas, Dimitris
- Suckow, Stephan
- Castila, Sebastian
- Koppens, Frank
- Ferrari, Andrea
- Dabos, George
- Pleros, Nikos
- Lidorikis, Elefterios
DOIAbstract
Photonic integrated circuits (PICs) for next-generation optical communication interconnects and all-optical signal processing require efficient (∼A/W) and fast (≥25 Gbs–1) light detection at low (<pJbit–1) power consumption, in devices compatible with Si processing, so that the monolithic integration of electro-optical materials and electronics can be achieved consistently at the wafer scale. Graphene-based photodetectors can meet these criteria, thanks to their broadband absorption, ultra-high mobility, ultra-fast electron interactions, and strong photothermoelectric effect. High responsivities (∼ 1 A/W), however, have only been demonstrated in biased configurations, which introduce dark current, noise, and power consumption, while unbiase...
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