Two-dimensional Platinum Diselenide Waveguide-Integrated Infrared Photodetectors
| Autor: | Parhizkar, Shayan, Prechtl, Maximilian, Giesecke, Anna Lena, Suckow, Stephan, Wahl, Sophia, Lukas, Sebastian, Hartwig, Oliver, Negm, Nour, Quellmalz, Arne, Gylfason, Kristinn B., Schall, Daniel, Wuttig, Matthias, Duesberg, Georg S., Lemme, Max C. |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | ACS Photonics, 9, 859-867, 2022 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1021/acsphotonics.1c01517 |
| Popis: | 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 ${\mu}$m. Multilayered platinum diselenide (PtSe$_2$) is a semi-metallic two-dimensional (2D) material that can be synthesized below 450${\deg}$C. We integrate PtSe$_2$ 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 ${\mu}$s. Fourier transform infrared spectroscopy (FTIR) in the wavelength range from 1.25 ${\mu}$m to 28 ${\mu}$m indicates the suitability of PtSe$_2$ for PDs far into the infrared wavelength range. Our PtSe$_2$ PDs integrated by direct growth outperform PtSe$_2$ 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$_2$ an attractive 2D material for optoelectronics and PICs. Comment: 23 pages, 4 figures |
| Databáze: | arXiv |
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