Abstract

Manipulation of the photoluminescence (PL) of monolayer (ML) molybdenum disulfide (${\mathrm{MoS}}_2$) 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 ${\mathrm{MoS}}_2$. Here, we employ aluminum (Al) disks to tune the PL of ML ${\mathrm{MoS}}_2$. We have found that PL enhancement reaches the maximum when plasmonic resonances of Al disks overlap with the absorption peaks of ML ${\mathrm{MoS}}_2$. Near-field simulations show that PL enhancement is due to weak plasmon–exciton coupling.

© 2018 Optical Society of America

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