Perfect light absorption in monolayer MoS2empowered by optical Tamm states

Yangwu Li, Hua Lu, Jiadeng Zheng, Shichang Li, Xiao Xuan, Jianlin Zhao

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7 Scopus citations

Abstract

We present the perfect light absorption of monolayer molybdenum disulfide (MoS2) in a dielectric multilayer system with two different Bragg mirrors. The results show that the strong absorption of visible light in monolayer MoS2 is attributed to the formation of optical Tamm states (OTSs) between two Bragg mirrors. The MoS2 absorption spectrum is dependent on the layer thickness of Bragg mirrors, incident angle of light, and the period numbers of Bragg mirrors. Especially, the nearly perfect light absorption (99.4%) of monolayer MoS2 can be achieved by choosing proper period numbers, which is well analyzed by the temporal coupled-mode theory.

Original languageEnglish
Article number103801
JournalChinese Optics Letters
Volume19
Issue number10
DOIs
StatePublished - Oct 2021

Keywords

  • Light absorption
  • Molybdenum disulfide
  • Optical Tamm states

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