Weak plasmon-exciton coupling between monolayer molybdenum disulfide and aluminum disks

Optics Letters
Liu HailongWu Xijun

Abstract

Manipulation of the photoluminescence (PL) of monolayer (ML) molybdenum disulfide (MoS2) with metallic plasmonic nanostructures has attracted much more attention for potential applications in optoelectronic devices. However, due to the limitation of resonance wavelength and oxidation properties, gold and silver are not the best selections for manipulating PL of MoS2. Here, we employ aluminum (Al) disks to tune the PL of ML MoS2. We have found that PL enhancement reaches the maximum when plasmonic resonances of Al disks overlap with the absorption peaks of ML MoS2. Near-field simulations show that PL enhancement is due to weak plasmon-exciton coupling.

References

Mar 17, 2010·Nano Letters·Andrea SplendianiFeng Wang
Jan 15, 2011·Physical Review Letters·Kin Fai MakTony F Heinz
Mar 29, 2011·Angewandte Chemie·Frank WürthnerChantu R Saha-Möller
Dec 15, 2011·ACS Nano·Zongyou YinHua Zhang
Dec 4, 2012·Nature Materials·Kin Fai MakJie Shan
Mar 22, 2013·Nano Letters·R S SundaramM Steiner
Apr 4, 2013·ACS Nano·Yulu LiuZhenhua Ni
Jun 25, 2013·Nature Materials·Branimir Radisavljevic, Andras Kis
Nov 13, 2013·Nano Letters·Shinichiro MouriKazunari Matsuda
Jan 20, 2016·Nano Letters·Wenjing LiuRitesh Agarwal

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