Park Minji, Kang Gumin, Ko Hyungduk
Nanophotonics Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, South Korea.
Sci Rep. 2020 Jul 9;10(1):11340. doi: 10.1038/s41598-020-68127-7.
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 film attached with a plasmonic tape for near-infrared (NIR) detection. MoS 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 flakes. Consequently, the NIR photoresponse of the MoS 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 photodetectors is approximately four times higher than that of bare MoS devices.
二硫化钼因其优异的电学和光学性能，作为一种有前景的光探测器应用材料受到了广泛研究。我们报道了一种附着有等离子体带的多层MoS薄膜用于近红外（NIR）探测。MoS薄片通过化学剥离转移到聚合物衬底上，热退火后在衬底上形成的银纳米颗粒（AgNPs）转移到透明胶带上。带有AgNPs的透明胶带直接且简单地附着在MoS薄片上。因此，MoS器件的近红外光响应得到了显著增强。所提出的胶带转移方法能够在任意衬底（如聚合物衬底）上形成等离子体结构，而无需高温工艺。AgNPs-MoS光探测器的性能比裸MoS器件高出约四倍。
