Ultra-broadband perfect solar energy absorber based on tungsten ring arrays. (15th November 2021)

• Record Type: Journal Article
• Authors: Cheng, Yu; Xiong, Min; Chen, Ming; Deng, Shijie; Liu, Houquan; Teng, Chuanxin; Yang, Hongyan; Deng, Hongchang; Yuan, Libo
• Is Part Of: Engineering research express. Volume 3:Number 4(2021)
• Publication Date: 2021-11-15
• Subjects: broadband absorber -- solar energy -- plasmons -- ring array; Engineering -- Periodicals; 620.005
• DOI: 10.1088/2631-8695/ac372f
• Languages: English
• ISSNs: 2631-8695

Abstract

Abstract: Metamaterials play a crucial role in the research of broadband absorbers. In order to achieve broadband and efficient absorption of solar energy, a novel solar energy absorber based on tungsten ring array is proposed in this paper. The results of numerical analysis show that the absorption efficiency of the absorber is over 90% at 300∼2000 nm, the average absorption efficiency is 96.2%, and the absorption peak is 99.9%. Broadband absorption can be attributed to the excitation of plasmon and Fabry–Perot resonance effect on the surface of metal-insulator-metal. In addition, thanks to the high symmetry of the structure, it is relatively independent of incident angle and polarization angle. In the future, the absorbent will have a promising application prospect in the fields of solar energy utilization, photothermal conversion and infrared detection.