Room-temperature electrical control of polarization and emission angle in a cavity-integrated 2D pulsed LED.

Autor: Gonzalez Marin JF; Institute of Electrical and Microengineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland.; Institute of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland., Unuchek D; Institute of Electrical and Microengineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland.; Institute of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland., Sun Z; Institute of Electrical and Microengineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland.; Institute of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland., Cheon CY; Institute of Electrical and Microengineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland.; Institute of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland., Tagarelli F; Institute of Electrical and Microengineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland.; Institute of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland., Watanabe K; Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan., Taniguchi T; International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan., Kis A; Institute of Electrical and Microengineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland. andras.kis@epfl.ch.; Institute of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-, 1015, Lausanne, Switzerland. andras.kis@epfl.ch.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2022 Aug 19; Vol. 13 (1), pp. 4884. Date of Electronic Publication: 2022 Aug 19.
DOI: 10.1038/s41467-022-32292-2
Abstrakt: Devices based on two-dimensional (2D) semiconductors hold promise for the realization of compact and versatile on-chip interconnects between electrical and optical signals. Although light emitting diodes (LEDs) are fundamental building blocks for integrated photonics, the fabrication of light sources made of bulk materials on complementary metal-oxide-semiconductor (CMOS) circuits is challenging. While LEDs based on van der Waals heterostructures have been realized, the control of the emission properties necessary for information processing remains limited. Here, we show room-temperature electrical control of the location, directionality and polarization of light emitted from a 2D LED operating at MHz frequencies. We integrate the LED in a planar cavity to couple the polariton emission angle and polarization to the in-plane exciton momentum, controlled by a lateral voltage. These findings demonstrate the potential of TMDCs as fast, compact and tunable light sources, promising for the realization of electrically driven polariton lasers.
(© 2022. The Author(s).)
Databáze: MEDLINE
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