Open AccessNearly perfect absorption of light in monolayer molybdenum disulfide supported by multilayer structures
Author(s) -
Hua Lü,
Xuetao Gan,
Dong Mao,
Yicun Fan,
Di Yang
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.021630
Subject(s) - molybdenum disulfide , materials science , photodetection , optics , optoelectronics , monolayer , absorption (acoustics) , wavelength , dielectric , photoluminescence , plasmon , photonics , ray , guided mode resonance , photodetector , diffraction grating , nanotechnology , physics , metallurgy , composite material
A novel multilayer photonic structure is proposed to achieve the strong enhancement of light absorption in monolayer molybdenum disulfide (MoS 2 ). Both numerical and analytical results illustrate that the absolute absorption of light in this atomically thin layer can approach as high as 96% at the visible wavelengths due to the excitation of Tamm plasmon mode. It is also found that the operating wavelength and height of sharp absorption peak are particularly dependent on the layer thicknesses and period number of dielectric grating, MoS 2 position in the spacer, and incident angle of light, which contribute to the tunability and selectivity of light-MoS 2 interaction. These results would provide a new pathway for the improvement of MoS 2 photoluminescence and photodetection.