Abstract The crystalline silicon solar module operates in an outdoor environment and exposed to radiation, ambient temperature and humidity. This paper focuses on the performance and lifetime improvement of the generic commercial single-layered Si3N4 coated multi-crystalline silicon solar cell with the addition of selective radiative antireflective coating (SR-ARC). We presented a common approach to radiatively lower the temperature of the solar module through atmospheric and sky emission with keeping or increasing the solar absorption in 300–1150 nm wavelength range. The physical, electrical and optical parameters of the generic solar cell have been tested in the laboratory and implemented in simulation. Further solar cell surface texture parameters have been tested and verified by simulation. At optimised thickness emissivity of the SR-ARC has been calculated in the range of 4–25 µm wavelength. The maximum temperature reduction of 6.8 °C estimated in the double-layer SR-ARC module compared to a single antireflection layer coated multi-crystalline silicon solar module. With the application of triple-layer SR-ARC, absorption has increased, but the emission has been reduced compared to the double layer SR-ARC. After 25 years of field operation, due to the application of SR-ARC, the solar module effective power conversion efficiency is expected to improve by another 1% in absolute term.

中文翻译：

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用于多晶硅太阳能组件的先进辐射冷却器

摘要 晶体硅太阳能组件在室外环境中运行，并暴露在辐射、环境温度和湿度下。本文重点介绍了添加选择性辐射抗反射涂层 (SR-ARC) 的通用商用单层 Si3N4 涂层多晶硅太阳能电池的性能和寿命改进。我们提出了一种通过大气和天空发射辐射降低太阳能模块温度的常用方法，同时保持或增加 300-1150 nm 波长范围内的太阳能吸收。通用太阳能电池的物理、电学和光学参数已在实验室进行测试并在模拟中实现。进一步的太阳能电池表面纹理参数已经过模拟测试和验证。在 4-25 µm 波长范围内计算出 SR-ARC 的优化厚度发射率。与单个抗反射层涂层多晶硅太阳能模块相比，双层 SR-ARC 模块估计的最大温度降低了 6.8 °C。随着三层 SR-ARC 的应用，吸收增加，但与双层 SR-ARC 相比，发射减少。经过25年的现场运行，由于SR-ARC的应用，太阳能组件的有效功率转换效率绝对值有望再提高1%。随着三层 SR-ARC 的应用，吸收增加，但与双层 SR-ARC 相比，发射减少。经过25年的现场运行，由于SR-ARC的应用，太阳能组件的有效功率转换效率绝对值有望再提高1%。随着三层 SR-ARC 的应用，吸收增加，但与双层 SR-ARC 相比，发射减少。经过25年的现场运行，由于SR-ARC的应用，太阳能组件的有效功率转换效率绝对值有望再提高1%。