Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2020-2021).

Black phosphorus is a stable allotrope of phosphorus that exhibits a layered structure that can be exfoliated,x000D
like graphene, down to a single monolayer. This elemental 2D semiconductor offers several distinctivex000D
features: remarkably high carrier mobilities, an anisotropic band structure, and a direct gap that efficientlyx000D
absorbs light. In addition, BP offers two characteristics unmatched by any other 2D or bulk materials: a tunablex000D
direct bandgap from the mid-infrared to the visible via the sample thickness and the ability to dynamically tunex000D
the gap through an applied electric field. These characteristics present unique opportunities for thex000D
development of low-cost photodetectors with enhanced responsivities and operating frequencies in thex000D
technologically important infrared region of the spectrum. In close partnership with Excelitas, one of the mostx000D
important photodetector manufacturers in the world, we will develop a number of infrared photodetectorx000D
architectures based on BP. In particular, we will develop electric-field tunable BP photodetectors to extend thex000D
intrinsic spectral range of BP beyond 4 microns, we will enhance their sensitivity by using optical metasurfacesx000D
and finally we will develop low-cost large-area BP detectors using solution-based processing of BPx000D
nanoparticles. Black phosphorus detectors will have potential applications in telecommunications,x000D
spectroscopy, range finding and thermal imaging. Within the context of this Project, we will specificallyx000D
benchmark BP tunable detectors as potential trace gas sensors.