An electroluminescent and tunable cavity-enhanced carbon-nanotube-emitter in the telecom band

Anna P. Ovvyan, Min-Ken Li, Helge Gehring, Fabian Beutel, Sandeep Kumar, Frank Hennrich, Li Wei, Yuan Chen, Felix Pyatkov, Ralph Krupke and Wolfram H. P. Pernice ()
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Anna P. Ovvyan: University of Münster, Physikalisches Institut, Center for Nanotechnology
Min-Ken Li: Institute of Quantum Materials and Technologies, Karlsruhe Institute of Technology
Helge Gehring: University of Münster, Physikalisches Institut, Center for Nanotechnology
Fabian Beutel: University of Münster, Physikalisches Institut, Center for Nanotechnology
Sandeep Kumar: Institute of Nanotechnology, Karlsruhe Institute of Technology
Frank Hennrich: Institute of Quantum Materials and Technologies, Karlsruhe Institute of Technology
Li Wei: The University of Sydney, School of Chemical and Biomolecular Engineering
Yuan Chen: The University of Sydney, School of Chemical and Biomolecular Engineering
Felix Pyatkov: Institute of Materials Science, Technische Universität Darmstadt
Ralph Krupke: Institute of Quantum Materials and Technologies, Karlsruhe Institute of Technology
Wolfram H. P. Pernice: University of Münster, Physikalisches Institut, Center for Nanotechnology

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Emerging photonic information processing systems require chip-level integration of controllable nanoscale light sources at telecommunication wavelengths. Currently, substantial challenges remain in the dynamic control of the sources, the low-loss integration into a photonic environment, and in the site-selective placement at desired positions on a chip. Here, we overcome these challenges using heterogeneous integration of electroluminescent (EL), semiconducting carbon nanotubes (sCNTs) into hybrid two dimensional – three dimensional (2D-3D) photonic circuits. We demonstrate enhanced spectral line shaping of the EL sCNT emission. By back-gating the sCNT-nanoemitter we achieve full electrical dynamic control of the EL sCNT emission with high on-off ratio and strong enhancement in the telecommunication band. Using nanographene as a low-loss material to electrically contact sCNT emitters directly within a photonic crystal cavity enables highly efficient EL coupling without compromising the optical quality of the cavity. Our versatile approach paves the way for controllable integrated photonic circuits.

Date: 2023
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DOI: 10.1038/s41467-023-39622-y

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