Enhanced absorption of monolayer molybdenum disulfide (MoS2) using nanostructures with symmetrical cross resonator in the visible ranges
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In order to enhance the absorption of monolayer molybdenum disulfide (MoS2), a novel nanostructure with symmetrical cross resonator based on MoS2 in the visible wavelength ranges has been proposed. At a resonant wavelength of 623 nm, the absorption of monolayer MoS2 in the absorption structure is as high as 82%, much higher than the bare MoS2 in the air. The electric field around monolayer MoS2 is enhanced by the guided mode resonance, thereby enhancing the absorption of monolayer MoS2 in the structure. The relevant parameters of the proposed structure are adjusted to achieve the tunability of the resonant wavelength in the visible ranges and the high-efficiency absorption of monolayer MoS2 in the structure, which is of great significance for the applications of MoS2-based optoelectronic devices.
KeywordsMonolayer MoS2 Absorption Resonance Perfect absorption structure
This work is supported by the National Natural Science Foundation of China (Nos. 11604124, 61604080, 61504050), Natural Science Foundation of Jiangsu Province (Nos. BK20150158, BK20160883, BM2014402), Open Project Program of State Key Laboratory of Food Science and Technology, Jiangnan University (No. SKLF-KF-201706), the China Postdoctoral Science Foundation (No. 2017M621623), the Fundamental Research Funds for Central Universities (Nos. JUSRP51628B, JUSRP51517, JUSRP51716A), the national first-class discipline program of Food Science and Technology (No. JUFSTR20180302), University Science Research Project of Jiangsu Province (No. 16KJB140011), and the Doctoral Starting Foundation of Wuxi Institute of Technology (No. 30593117033).
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