Abstract This study presents a design of multilayer solar selective absorber for high temperature applications. The optical stack is composed of four layers deposited by magnetron sputtering on stainless steel substrates. The first is a back-reflector tungsten layer, which is followed by two absorption layers based on CrAlSiNx/CrAlSiOyNx structure for phase interference. The final layer is an antireflection layer of SiAlOx. The design was theoretically modelled with SCOUT software using transmittance and reflectance curves of individual thin layers, which were deposited on glass substrates. The final design shows simultaneously high solar absorbance α = 95.2% and low emissivity e = 9.8% (calculated for 400 °C) together with high thermal stability at 400 °C, in air, and 600 °C in vacuum for 650 h.

中文翻译：

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一种用于高温应用的选择性太阳能吸收器的设计

摘要 本研究提出了一种用于高温应用的多层太阳能选择性吸收器的设计。光学堆栈由通过磁控溅射沉积在不锈钢基板上的四层组成。第一个是背反射钨层，然后是两个基于 CrAlSiNx/CrAlSiOyNx 结构的吸收层，用于相位干涉。最后一层是 SiAlOx 抗反射层。该设计通过 SCOUT 软件使用单个薄层的透射率和反射率曲线进行理论建模，这些薄层沉积在玻璃基板上。最终设计同时显示出高太阳能吸收率 α = 95.2% 和低发射率 e = 9.8%（以 400 °C 计算）以及在 400 °C、空气中和 600 °C 真空中 650 小时的高热稳定性。