Ultrathin polarization-insensitive wide-angle broadband near-perfect absorber in the visible regime based on few-layer MoS2 films

作者：Zhang, Yuebian; Liu, Wenwei; Li, Zhancheng; Cheng, Hua^*; Zhang, Yanbang; Jia, Guozhi; Chen, Shuqi^*; Tian, Jianguo

来源：Applied Physics Letters, 2017, 111(11): 111109.

DOI：10.1063/1.4992045

• DER-WAALS HETEROSTRUCTURES
• UNITY ABSORPTION
• MONOLAYER MOS2
• OPTOELECTRONICS
• TRANSITION
• CELLS

We report the design, characterization, and experimental demonstration of a broadband near-perfect absorber in the visible regime based on strong interference in ultrathin molybdenum disulfide films obtained by the spin-coating method. The absorber is polarization-insensitive, and the absorption peak maintains a high value for large angles of incidence, which provides more efficient absorption for nonpolarized or oblique incident beams. The experimental results show that the absorption can reach more than 87% between 400 nm and 640 nm, which is in reasonable agreement with the simulated results. This work may offer a further step in the development of solar absorption-based nano-optoelectronic devices. Published by AIP Publishing.

• 出版日期2017-9-11
• 单位南开大学; 天津城建大学