Bidirectional light-emitting diode as a visible light source driven by alternating current

Mikołaj Żak (), Grzegorz Muziol, Marcin Siekacz, Artem Bercha, Mateusz Hajdel, Krzesimir Nowakowski-Szkudlarek, Artur Lachowski, Mikołaj Chlipała, Paweł Wolny, Henryk Turski and Czesław Skierbiszewski
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Mikołaj Żak: Institute of High Pressure Physics Polish Academy of Sciences
Grzegorz Muziol: Institute of High Pressure Physics Polish Academy of Sciences
Marcin Siekacz: Institute of High Pressure Physics Polish Academy of Sciences
Artem Bercha: Institute of High Pressure Physics Polish Academy of Sciences
Mateusz Hajdel: Institute of High Pressure Physics Polish Academy of Sciences
Krzesimir Nowakowski-Szkudlarek: Institute of High Pressure Physics Polish Academy of Sciences
Artur Lachowski: Institute of High Pressure Physics Polish Academy of Sciences
Mikołaj Chlipała: Institute of High Pressure Physics Polish Academy of Sciences
Paweł Wolny: Institute of High Pressure Physics Polish Academy of Sciences
Henryk Turski: Institute of High Pressure Physics Polish Academy of Sciences
Czesław Skierbiszewski: Institute of High Pressure Physics Polish Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract Gallium nitride-based light-emitting diodes have revolutionized the lighting market by becoming the most energy-efficient light sources. However, the power grid, in example electricity delivery system, is built based on alternating current, which raises problems for directly driving light emitting diodes that require direct current to operate effectively. In this paper, we demonstrate a proof-of-concept device that addresses this fundamental issue – a gallium nitride-based bidirectional light-emitting diode. Its structure is symmetrical with respect to the active region, which, depending on the positive or negative bias, allows for the injection of either electrons or holes from each side. It is composed of two tunnel junctions that surround the active region. In this work, the optical and electrical properties of bidirectional light emitting diodes are investigated under direct and alternating current conditions. We find that the light is emitted in both directions of the supplied current, contrary to conventional light emitting diodes; hence, bidirectional light-emitting diodes can be considered a semiconductor light source powered directly with alternating current. In addition, we show that bidirectional light-emitting diodes can be stacked vertically to multiply the optical power achieved from a single device.

Date: 2023
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DOI: 10.1038/s41467-023-43335-7

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