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Scalable and low-cost fabrication of flexible WS2 photodetectors on polycarbonate

TLDR
In this article , a shadow mask is used to cover the contacts of WS 2 photodetectors and the contacts are then deposited by thermal evaporation through shadow mask.
Abstract
Abstract We present a low-cost and easy-to-implement technique to fabricate large-area WS 2 photodetector devices onto transparent and flexible polycarbonate substrates. The method relies on the deposition of large-area (in the cm scale) thin films (~30 nm thick) of WS 2 by a recently introduced abrasion-induced method. Interdigitated electrical contacts are then deposited by thermal evaporation through a shadow mask. The photodetectors present well-balanced performances with an good trade-off between responsivity (up to 144 mA/W at a source-drain voltage of 10 V and illumination power of 1 μW) and response time (down to ~70 µs) and a detectivity value of 10 8 Jones. We found that the devices perform very reversibly upon several illumination and straining cycles and we found a moderate device-to-device variation.

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Controlled two-step synthesis of nanostructured WS2 thin films for enhanced UV-visible photodetector applications

TL;DR: In this article , a large area of WS2 nanostructures were synthesized using sputtering and chemical vapour deposition (CVD) techniques for ultraviolet-visible (UV-Vis) photodetector applications.
Journal ArticleDOI

Two-Dimensional Transition Metal Dichalcogenide Based Biosensors: From Fundamentals to Healthcare Applications

TL;DR: In this article , a review of 2D transition metal dichalcogenides (TMDs) based biosensors for the detection of bio analytes ranging from bacteria, viruses, and whole cells to molecular biomarkers via optical, electronic, and electrochemical sensing mechanisms are discussed.
Journal ArticleDOI

On the thermal and mechanical performance of Polycarbonate / Titanium Nitride nanocomposites in Material Extrusion Additive Manufacturing

TL;DR: In this article , the effect of the additive in the polymeric matrix, in an effort to produce superior filaments for demanding applications, was evaluated, to be assessed for conforming to the corresponding standards, as well as to be characterized regarding their mechanical, thermal, and spectroscopic responses.
Journal ArticleDOI

2D Materials towards sensing technology: From fundamentals to applications

TL;DR: In this article , a review of the most relevant transduction mechanisms of 2D materials employed for sensing is presented, including transition metal dichalcogenides (TMDs), hexagonal boron nitride (h-BN), 2D carbides and nitrides of transition metals (MXenes) and black phosphorus (BP).
Journal ArticleDOI

Non-Additive Optical Response in Transition Metal Dichalcogenides Heterostructures

TL;DR: In this article , the optical response of heterostructures is not the sum of optical properties of its constituents, but rather a function of the underlying structure of the vdW materials.
References
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Journal ArticleDOI

Electronics and optoelectronics of two-dimensional transition metal dichalcogenides.

TL;DR: This work reviews the historical development of Transition metal dichalcogenides, methods for preparing atomically thin layers, their electronic and optical properties, and prospects for future advances in electronics and optoelectronics.
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Photodetectors based on graphene, other two-dimensional materials and hybrid systems

TL;DR: An overview and evaluation of state-of-the-art photodetectors based on graphene, other two-dimensional materials, and hybrid systems based on the combination of differentTwo-dimensional crystals or of two- dimensional crystals and other (nano)materials, such as plasmonic nanoparticles, semiconductors, quantum dots, or their integration with (silicon) waveguides are provided.
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Electronics based on two-dimensional materials

TL;DR: A review of electronic devices based on two-dimensional materials, outlining their potential as a technological option beyond scaled complementary metal-oxide-semiconductor switches and the performance limits and advantages, when exploited for both digital and analog applications.
Journal ArticleDOI

Two-dimensional material nanophotonics

TL;DR: In this article, the optical properties and applications of various two-dimensional materials including transition metal dichalcogenides are reviewed with an emphasis on nanophotonic applications, and two different approaches for enhancing their interactions with light: through their integration with external photonic structures, and through intrinsic polaritonic resonances.
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Emerging Device Applications for Semiconducting Two-Dimensional Transition Metal Dichalcogenides

TL;DR: By critically assessing and comparing the performance of these devices with competing technologies, the merits and shortcomings of this emerging class of electronic materials are identified, thereby providing a roadmap for future development.
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