Two-dimensional Platinum Diselenide Waveguide-Integrated Infrared Photodetectors
Abstract
Low cost, easily integrable photodetectors (PDs) for silicon (Si) photonics are still a bottleneck for photonic integrated circuits (PICs), especially for wavelengths above 1.8 m. Multilayered platinum diselenide (PtSe) is a semi-metallic two-dimensional (2D) material that can be synthesized below 450C. We integrate PtSe based PDs directly by conformal growth on Si waveguides. The PDs operate at 1550 nm wavelength with a maximum responsivity of 11 mA/W and response times below 8.4 s. Fourier transform infrared spectroscopy (FTIR) in the wavelength range from 1.25 m to 28 m indicates the suitability of PtSe for PDs far into the infrared wavelength range. Our PtSe PDs integrated by direct growth outperform PtSe PDs manufactured by standard 2D layer transfer. The combination of IR responsivity, chemical stability, selective and conformal growth at low temperatures, and the potential for high carrier mobility, make PtSe an attractive 2D material for optoelectronics and PICs.
Keywords
Cite
@article{arxiv.2110.12874,
title = {Two-dimensional Platinum Diselenide Waveguide-Integrated Infrared Photodetectors},
author = {Shayan Parhizkar and Maximilian Prechtl and Anna Lena Giesecke and Stephan Suckow and Sophia Wahl and Sebastian Lukas and Oliver Hartwig and Nour Negm and Arne Quellmalz and Kristinn B. Gylfason and Daniel Schall and Matthias Wuttig and Georg S. Duesberg and Max C. Lemme},
journal= {arXiv preprint arXiv:2110.12874},
year = {2022}
}
Comments
23 pages, 4 figures