Solution-Processed SnSe2-RGO-Based Bulk Heterojunction for Self-Powered and Broadband Photodetection

Kumawat, KL and Singh, DK and Nanda, KK and Krupanidhi, SB (2021) Solution-Processed SnSe2-RGO-Based Bulk Heterojunction for Self-Powered and Broadband Photodetection. In: ACS Applied Electronic Materials, 3 . pp. 3131-3138.

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Abstract

Metal dichalcogenide semiconductors have shown tremendous performance in various optoelectronic applications due to their excellent properties. However, low carrier mobility associated with the photoactive materials restricts its applications in highly responsive and ultrafast photodetectors. Here, to improve the device performance, SnSe2 has been incorporated with reduced graphene oxide (RGO) to form a SnSe2-RGO bulk heterojunction. SnSe2-RGO solution has been drop cast on a pulsed laser deposited MoS2 film to fabricate SnSe2-RGO/MoS2 hybrid structure. The built-in electric potential generated at the SnSe2-RGO/MoS2 interface facilitates the self-powered photodetection. Under IR illumination, the device exhibits excellent photoresponse with a responsivity of 13.75 A W-1 and a detectivity of 5.08 � 1012 Jones at 0 V. The excellent performance of the device is attributed to high charge carrier mobility of RGO and a robust built-in electric field at the interface. Also, the device shows excellent photoresponse under visible light illumination. © 2021 American Chemical Society.

Item Type:	Journal Article
Publication:	ACS Applied Electronic Materials
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to American Chemical Society
Keywords:	Electric fields; Electric potential; Graphene; Hall mobility; Heterojunctions; Hole mobility; Layered semiconductors; Molybdenum compounds; Photodetectors; Pulsed laser deposition; Tin compounds, Built-in electric fields; Bulk heterojunction; Device performance; Hybrid structure; Optoelectronic applications; Photoactive materials; Reduced graphene oxides (RGO); Solution-processed, Selenium compounds
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	16 Nov 2021 10:44
Last Modified:	16 Nov 2021 10:44
URI:	http://eprints.iisc.ac.in/id/eprint/69697

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