Development of a Solar Cell Back Sheet with Excellent UV Durability and Thermal Conductivity.
Development of a Solar Cell Back Sheet with Excellent UV Durability and Thermal Conductivity.
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DOI：
10.1166/jnn.2018.15680
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发表时间：
2018-09
影响因子：
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通讯作者：
Seong-Hwan Kang;Jaeho Choi;Sung-ho Lee;Y. Song;Jong-Se Park;I. Jung;Jinsu Jung;C. Kim;O. Yang
中科院分区：
文献类型：
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作者：
Seong-Hwan Kang;Jaeho Choi;Sung-ho Lee;Y. Song;Jong-Se Park;I. Jung;Jinsu Jung;C. Kim;O. Yang
背板是光伏（PV）组件中最重要的材料之一。它通过防止湿气渗透，在保护太阳能电池免受环境影响方面发挥着重要作用。在背板中，最外层由聚酯（PET）薄膜组成，以保护光伏组件免受潮湿，相对层由TiO2 + PE材料组成。如今，光伏组件安装在沙漠中。因此，由于热辐射效应会影响效率，因此需要研究提高光伏组件发电效率的方法。使用高导热率的背板，可以有效地散热，从而提高模块的输出效率。在这项研究中，通过混合参考膜（TiO2 + PE）和具有高导热性的非金属材料MgO来制备导热膜。对薄膜进行了紫外线照射测试。导热膜（TiO2 + PE + MgO）表现出比参考膜更高的导热率。导热膜中没有发现可见裂纹，黄变程度也较低，证实了其优异的抗紫外线特性。将样品膜粘合至PET层，并制造背板。还分析了紫外线照射后背板的泛黄情况。此外，使用开发的背板制造了具有四个太阳能电池的迷你模块，并进行了对比户外测试。结果显示，发电量提高了1.38%。
The back sheet is one of the most important materials in photovoltaic (PV) modules. It plays an important role in protecting the solar cell from the environment by preventing moisture penetration. In the back sheet, the outermost layer is composed of a polyester (PET) film to protect the PV module from moisture, and the opposite layer is composed of a TiO2 + PE material. Nowadays, PV modules are installed in the desert. Therefore, methods to improve the power generation efficiency of PV modules need to be investigated as the efficiency is affected by temperature resulting from the heat radiation effect. Using a back sheet with a high thermal conductivity, the module output efficiency can be increased as heat is efficiently dissipated. In this study, a thermally conductive film was fabricated by mixing a reference film (TiO2 + PE) and a non-metallic material, MgO, with high thermal conductivity. UV irradiation tests of the film were conducted. The thermally conductive film (TiO2 + PE + MgO) showed higher conductivity than a reference film. No visible cracks and low yellowing degree were found in thermally conductive film, confirming its excellent UV durability characteristics. The sample film was bonded to a PET layer, and a back sheet was fabricated. The yellowing of the back sheet was also analyzed after UV irradiation. In addition, mini modules with four solar cell were fabricated using the developed back sheet, and a comparative outdoor test was conducted. The results showed that power generation improved by 1.38%.