Abstract:
:High-speed light emitters integrated on silicon chips can enable novel architectures for silicon-based optoelectronics, such as on-chip optical interconnects, and silicon photonics. However, conventional light sources based on compound semiconductors face major challenges for their integration with a silicon-based platform because of their difficulty of direct growth on a silicon substrate. Here we report ultra-high-speed (100-ps response time), highly integrated graphene-based on-silicon-chip blackbody emitters in the near-infrared region including telecommunication wavelength. Their emission responses are strongly affected by the graphene contact with the substrate depending on the number of graphene layers. The ultra-high-speed emission can be understood by remote quantum thermal transport via surface polar phonons of the substrates. We demonstrated real-time optical communications, integrated two-dimensional array emitters, capped emitters operable in air, and the direct coupling of optical fibers to the emitters. These emitters can open new routes to on-Si-chip, small footprint, and high-speed emitters for highly integrated optoelectronics and silicon photonics.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Miyoshi Y,Fukazawa Y,Amasaka Y,Reckmann R,Yokoi T,Ishida K,Kawahara K,Ago H,Maki Hdoi
10.1038/s41467-018-03695-xsubject
Has Abstractpub_date
2018-03-29 00:00:00pages
1279issue
1issn
2041-1723pii
10.1038/s41467-018-03695-xjournal_volume
9pub_type
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