Abstract
The capability to detect the polarization state of light is crucial in many day-life applications and scientific disciplines. Novel anisotropic 2D materials such as TiS3 combine polarization sensitivity, given by the in-plane optical anisotropy, with excellent electrical properties. Here, the fabrication of a monolithic polarization-sensitive broadband photodetector based on a mixed-dimensionality TiS3/Si p–n junction is demonstrated. The fabricated devices show broadband responsivity up to 1050 nm, a strong sensitivity to linearly polarized illumination with difference between the two orthogonal polarization states up to 350%, and a good detectivity and fast response time. The discussed devices can be used as building blocks to fabricate more complex polarization-sensitive systems such as polarimeters.
Original language | English |
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Article number | 1800351 |
Journal | Advanced Optical Materials |
Volume | 6 |
Issue number | 19 |
DOIs | |
State | Published - 4 Oct 2018 |
Externally published | Yes |
Keywords
- optoelectronic devices
- photodetectors
- polarimeters
- p–n junctions
- titanium trisulfide
- trichalcogenides