Ultra-broad band absorber made by tungsten and aluminium

5th International Conference on Advances in Optoelectronics and Micro/Nano-optics

Wang, Wei^1 ; Zhao, Ding^1 ; Li, Qiang^1 ; Qiu, Min^1

State Key Laboratory of Modem Optical Instrumentation, College of Optical Science and Engieering, Zhejiang University, Hangzhou

310027, China^1

关键词: Alumina layers;    Broadband absorbers;    High melting point;    Thermal emissions;    Tungsten films;    Ultra broad band;    Visible and near infrared;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/680/1/012039/pdf
DOI  :  10.1088/1742-6596/680/1/012039

来源: IOP

【 摘 要 】

A broadband absorber comprising tungsten cubic arrays, a alumina layer and a tungsten film, is numerically and experimentally investigated, which exhibits near-unity absorption of visible and near-infrared light from 400 nm to 1150 nm. Benefiting from high melting points of tungsten and alumina, this device has great application potential in solar cells and thermal emission.