MoS${}_2$-on-paper optoelectronics: drawing photodetectors with van der Waals semiconductors beyond graphite

Abstract

We fabricate paper-supported semiconducting devices by rubbing a layered molybdenum disulfide (MoS2) crystal onto a piece of paper, similarly to the action of drawing/writing with a pencil on paper. We show that the abrasion between the MoS2 crystal and the paper substrate efficiently exfoliates the crystals, breaking the weak van der Waals interlayer bonds and leading to the deposition of a film of interconnected MoS2 platelets. Employing this simple method, that can be easily extended to other 2D materials, we fabricate MoS2-on-paper broadband photodectectors with spectral sensitivity from the ultraviolet (UV) to the near-infrared (NIR). We also used these paper-based photodetectors to acquire pictures of objects by mounting the photodetectors in a homebuilt single-pixel camera setup.

6 main text figures + 4 Supp Info figures

References in corpus (5)

• Anomalous Lattice Vibrations of Single and Few-Layer MoS2
• Photocurrent generation with two-dimensional van der Waals semiconductors
• Mechanisms of photoconductivity in atomically thin MoS2
• Micro-reflectance and transmittance spectroscopy: a versatile and powerful tool to characterize 2D materials
• Inkjet Printed 2D-Crystal Based Strain Gauges on Paper