Multifunctional van der Waals PdSe2 for light detection, guiding and modulation

Aleksandr Slavich, Georgy Ermolaev, Nikolay Pak, Dmitriy Grudinin, Konstantin Kravtsov, Mikhail Tatmyshevskiy, Valentin Semkin, Alexander Syuy, Arslan Mazitov, Anton Minnekhanov, Ivan Kazantsev, Dmitriy Dyubo, Amir Eghbali, Dmitry Yakubovsky, Mikhail Kashchenko, Mikhail Podobrii, Elena Titova, Alexander Melentev, Elena Zhukova, Gleb Tselikov, Ivan Kruglov, Dmitry Svintsov, Sergey Novikov, Andrey Vyshnevyy, Aleksey Arsenin, Kostya S. Novoselov () and Valentyn Volkov ()
Additional contact information
Aleksandr Slavich: Emmay Tower
Georgy Ermolaev: Emmay Tower
Nikolay Pak: Emmay Tower
Dmitriy Grudinin: Emmay Tower
Konstantin Kravtsov: Emmay Tower
Mikhail Tatmyshevskiy: Moscow Center for Advanced Studies
Valentin Semkin: Moscow Center for Advanced Studies
Alexander Syuy: Emmay Tower
Arslan Mazitov: Emmay Tower
Anton Minnekhanov: Emmay Tower
Ivan Kazantsev: Emmay Tower
Dmitriy Dyubo: Moscow Center for Advanced Studies
Amir Eghbali: Moscow Center for Advanced Studies
Dmitry Yakubovsky: Moscow Center for Advanced Studies
Mikhail Kashchenko: Moscow Center for Advanced Studies
Mikhail Podobrii: Moscow Center for Advanced Studies
Elena Titova: Moscow Center for Advanced Studies
Alexander Melentev: Moscow Center for Advanced Studies
Elena Zhukova: Moscow Center for Advanced Studies
Gleb Tselikov: Emmay Tower
Ivan Kruglov: Emmay Tower
Dmitry Svintsov: Moscow Center for Advanced Studies
Sergey Novikov: Moscow Center for Advanced Studies
Andrey Vyshnevyy: Emmay Tower
Aleksey Arsenin: Emmay Tower
Kostya S. Novoselov: University of Manchester
Valentyn Volkov: Emmay Tower

Nature Communications, 2025, vol. 16, issue 1, 1-9

Abstract: Abstract Modern optoelectronic devices demand materials that can perform multiple, often conflicting functions, such as acting as metals for interconnects, dielectrics for waveguides, and semiconductors for light emission and detection. The integration of these materials is challenging, slowing industry progress and increasing costs. It inspired an intensive search for an optoelectronic response within a single material. Here, we reveal that palladium diselenide (PdSe2) provides an answer to this quest owing to its band structure. It exhibits a semimetallic band structure with a large bandgap for interband transitions responsible for semiconductor-metallic nature. This duality enables PdSe2 to function as both a photodetector and a waveguide, integrating two traditionally incompatible responses. As a result, our findings provide a full picture of PdSe2 optoelectronic properties, paving the way for its use in multifunctional optoelectronic applications.

Date: 2025
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DOI: 10.1038/s41467-025-64247-8

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