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A MoS2/CuO-based hybrid p-n junction for high-performance self-powered photodetection

Lal Kumawat, K and Augustine, P and Kumar Singh, D and Baba Krupanidhi, S and Kar Nanda, K (2022) A MoS2/CuO-based hybrid p-n junction for high-performance self-powered photodetection. In: Journal of Materials Chemistry C .

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Official URL: https://doi.org/10.1039/d2tc02812c


Energy consumption is one of the key challenges that needs to be circumvented to develop high-performance and efficient photodetectors (PDs). In this regard, p-n heterojunctions based on van der Waals materials have attracted widespread research interest for the fabrication of next-generation PDs. Here, we report the integration of two-dimensional n-type MoS2 with p-type CuO to realize a p-n heterojunction. It is interesting to note that the device exhibits self-powered and broadband photodetection with a maximum responsivity and detectivity of 45.67 mA W−1 and 9.71 × 1011 Jones, respectively, under an illumination of 12.5 μW cm−2 light intensity. Moreover, the photoresponse of the device shows three orders of enhancement in the photocurrent at a reverse bias of −1.0 V. The device shows a responsivity and detectivity of 10.03 A W−1 and 1.8 × 1014 Jones at −1.0 V under the illumination of 12.5 μW cm−2 light intensity. This enhanced photoresponse is the result of better charge separation under the influence of built-in electric voltage and rectifying diode characteristics produced by the MoS2/CuO heterostructure device.

Item Type: Journal Article
Publication: Journal of Materials Chemistry C
Publisher: Royal Society of Chemistry
Additional Information: The copyright for this article belongs to Royal Society of Chemistry.
Keywords: Energy utilization; Heterojunctions; Layered semiconductors; Molybdenum compounds; Photodetectors; Van der Waals forces, Detectivity; Energy-consumption; Light intensity; P-n heterojunctions; P-n junction; Performance; Photo detection; Photoresponses; Responsivity; Self-powered, Copper oxides
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 19 Oct 2022 10:06
Last Modified: 19 Oct 2022 10:06
URI: https://eprints.iisc.ac.in/id/eprint/77467

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