Plasmonic-tape-attached multilayered MoS2 film for near-infrared photodetection
Minji Park, Gumin Kang, Hyungduk Ko
Abstract
Abstract Molybdenum disulfide has been intensively studied as a promising material for photodetector applications because of its excellent electrical and optical properties. We report a multilayer MoS 2 film attached with a plasmonic tape for near-infrared (NIR) detection. MoS 2 flakes are chemically exfoliated and transferred onto a polymer substrate, and silver nanoparticles (AgNPs) dewetted thermally on a substrate are transferred onto a Scotch tape. The Scotch tape with AgNPs is attached directly and simply onto the MoS 2 flakes. Consequently, the NIR photoresponse of the MoS 2 device is critically enhanced. The proposed tape transfer method enables the formation of plasmonic structures on arbitrary substrates, such as a polymer substrate, without requiring a high-temperature process. The performance of AgNPs-MoS 2 photodetectors is approximately four times higher than that of bare MoS 2 devices.