Multifunctional van der Waals PdSe2 for light detection, guiding and modulation
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 (PdSe<sub>2</sub>) 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 PdSe<sub>2</sub> to function as both a photodetector and a waveguide, integrating two traditionally incompatible responses. As a result, our findings provide a full picture of PdSe<sub>2</sub> optoelectronic properties, paving the way for its use in multifunctional optoelectronic applications.
Authors
- Alexander Melentev (ORCID: https://orcid.org/0000-0001-7998-9023)
- Mikhail K. Tatmyshevskiy (ORCID: https://orcid.org/0000-0002-9288-0337)
- E. S. Zhukova (ORCID: https://orcid.org/0000-0002-5482-9477)
- Gleb I. Tselikov (ORCID: https://orcid.org/0000-0002-6664-7881)
- Ivan A. Kruglov (ORCID: https://orcid.org/0000-0003-1786-9282)
- Dmitry I. Yakubovsky (ORCID: https://orcid.org/0000-0003-1350-2416)
- Aleksey V. Arsenin (ORCID: https://orcid.org/0000-0002-7506-4389)
- Dmitry A. Svintsov (ORCID: https://orcid.org/0000-0001-7443-0685)
- Amir Eghbali (ORCID: https://orcid.org/0000-0002-3905-9531)
- Valentyn S. Volkov (ORCID: https://orcid.org/0000-0003-2637-1371)
- Aleksandr S. Slavich (ORCID: https://orcid.org/0000-0001-7676-9527)
- S. V. Novikov (ORCID: https://orcid.org/0000-0002-0500-1278)
- Valentin Semkin (ORCID: https://orcid.org/0000-0002-4829-1893)
- А. А. Миннеханов (ORCID: https://orcid.org/0000-0002-7685-8463)
- Alexander V. Syuy (ORCID: https://orcid.org/0000-0002-2373-8812)
- Nikita Pak (ORCID: https://orcid.org/0000-0002-7288-0479)
- Arslan Mazitov (ORCID: https://orcid.org/0000-0002-6549-7324)
- Mikhail Kashchenko (ORCID: https://orcid.org/0000-0002-5185-6859)
- Elena Titova (ORCID: https://orcid.org/0000-0001-7080-1610)
- Kostya S. Novoselov (ORCID: https://orcid.org/0000-0003-4972-5371)
- Georgy A. Ermolaev (ORCID: https://orcid.org/0000-0002-0895-818X)
- Ivan S. Kazantsev
- Andrey A. Vyshnevyy (ORCID: https://orcid.org/0000-0003-1394-4169)
- Dmitriy Grudinin (ORCID: https://orcid.org/0000-0003-4038-5374)
- Konstantin Kravtsov (ORCID: https://orcid.org/0009-0000-8146-2378)
- Dmitriy Dyubo
- Mikhail Podobrii
Institutions
- National University of Singapore (SG)
- University of Manchester (GB)
- Henry Royce Institute (GB)
- University of Jazeera (AE)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-10-16
- DOI
- https://doi.org/10.1038/s41467-025-64247-8
- Citations
- 8
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 4.14