近年来,太阳能吸收器的研究为解决能源危机提供了重大突破。设计了一种基于四角星形阵列的完美太阳能吸收器,并对其吸收性能进行了数值分析。结果表明,该吸收体在400-2000nm范围内达到全带的90%以上。特别是,连续95%以上的带宽吸收效率达到1391nm,整个研究波段的平均吸收效率超过98%,太阳光谱的损失仅占2.7%。同时,可以通过改变吸收器的几何结构来调节吸收效率。此外,由于结构的完美对称,它具有优异的入射角和偏振角的不敏感性。总的来说,所提出的太阳能吸收器在太阳能收集和利用方面具有令人兴奋的前景,光热转换等相关领域。
In recent years, research on solar absorbers provides a significant breakthrough to solve the energy crisis. A perfect solar absorber based on a four-corner star array is designed and the absorption performance is analyzed numerically. The results show that the absorber reaches more than 90% of the full band in the range of 400-2000 nm. In particular, the absorption efficiency of the continuous more than 95% of the bandwidth reached 1391 nm, and the average absorption efficiency of the whole
study band is more than 98%, and the loss of the solar spectrum only accounted for 2.7%. At the same time, the absorption efficiency can be adjusted by changing the geometric structure of the absorber. In addition, due to the perfect symmetry of the structure, it has an excellent insensitivity of the incident angle and polarization angle. In general, the proposed solar absorber has exciting prospects in solar energy collection and utilization, photothermal conversion and other related fields.