2D-3D integration of hexagonal boron nitride and a high-κ dielectric for ultrafast graphene-based electro-absorption modulators

Hitesh Agarwal; Bernat Terrés; Lorenzo Orsini; Alberto Montanaro; Vito Sorianello; Marianna Pantouvaki; Kenji Watanabe; Takashi Taniguchi; Dries Van Thourhout; Marco Romagnoli; Frank H. L. Koppens

doi:10.1038/s41467-021-20926-w

Nature Communications (Feb 2021)

2D-3D integration of hexagonal boron nitride and a high-κ dielectric for ultrafast graphene-based electro-absorption modulators

Hitesh Agarwal,
Bernat Terrés,
Lorenzo Orsini,
Alberto Montanaro,
Vito Sorianello,
Marianna Pantouvaki,
Kenji Watanabe,
Takashi Taniguchi,
Dries Van Thourhout,
Marco Romagnoli,
Frank H. L. Koppens

Affiliations

Hitesh Agarwal: ICFO—Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology
Bernat Terrés: ICFO—Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology
Lorenzo Orsini: ICFO—Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology
Alberto Montanaro: Consorzio Nazionale per le Telecomunicazioni (CNIT), Photonic Networks and Technologies National Laboratory
Vito Sorianello: Consorzio Nazionale per le Telecomunicazioni (CNIT), Photonic Networks and Technologies National Laboratory
Marianna Pantouvaki: Department of 3D and Silicon photonics systems, Imec
Kenji Watanabe: Research Center for Functional Materials, National Institute for Materials Science
Takashi Taniguchi: International Center for Materials Nanoarchitectonics, National Institute for Materials Science
Dries Van Thourhout: Photonics Research Group, Department of Information Technology, Ghent University-IMEC
Marco Romagnoli: Consorzio Nazionale per le Telecomunicazioni (CNIT), Photonic Networks and Technologies National Laboratory
Frank H. L. Koppens: ICFO—Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology

DOI: https://doi.org/10.1038/s41467-021-20926-w
Journal volume & issue: Vol. 12, no. 1
pp. 1 – 6

Abstract

Read online

Here, three-dimensional hafnium oxide and two-dimensional hexagonal boron nitride are integrated in the insulating section of double-layer graphene optical modulators, leading to a maximum bandwidth of 39 GHz and enhanced modulation efficiency.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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