High entropy alloys (HEAs), which is at the expense of high cost compared to traditional alloy, should not be confined to the mechanical properties, but should be employed to devise a novel combination with unique functional and mechanical performances. In this work, high entropy alloy nitride (HEAN) is utilized as a novel double absorption layer to improve solar absorption in the high temperature solar selective absorbing coatings (SSACs). Our primary motivation is to lower thermal emittance (ε) and enhance solar absorptance (α). In order to realize this goal, coating design (CODE) software is employed to design and optimize the proposed HEAN based SSACs using appropriate dielectric function model. The ultimate as-deposited coating shows good optical properties with a high α value of 0.965 and a low ε value of 0.086 (at 82 °C). The estimate of thermal stability tests indicates that HEAN based SSACs has the ability to resist instability in high working temperature, which keeps good optical properties (α = 0.925, ε = 0.070) after annealing at 600 °C for 10 h.

与传统合金相比，以高成本为代价的高熵合金（HEA）不应局限于机械性能，而应被用来设计出具有独特功能和机械性能的新颖组合。在这项工作中，高熵合金氮化物（HEAN）被用作新型双吸收层，以改善高温太阳选择性吸收涂层（SSAC）中的太阳吸收。我们的主要动机是降低热辐射率（ε）和提高太阳吸收率（α）。为了实现此目标，使用涂层设计（CODE）软件使用适当的介电函数模型来设计和优化建议的基于HEAN的SSAC。最终沉积的涂层显示出良好的光学性能，高α值为0.965，低αε值为0.086（在82°C下）。对热稳定性测试的估计表明，基于HEAN的SSAC具有抵抗高工作温度下的不稳定性的能力， 在600°C退火10小时后，它可以保持良好的光学性能（α= 0.925，ε = 0.070）。