Chen Bing-Mau, Fu Han-Yi, Ying Shang-Ping, Hsu Ting-Wei
Department of Electro-Optical Engineering, Minghsin University of Science & Technology, Hsinchu 30401, Taiwan.
Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
Materials (Basel). 2022 Mar 22;15(7):2353. doi: 10.3390/ma15072353.
In this study, a negative replica layer of leaf surface microstructures was used to cover the top surfaces of semitransparent thin-film luminescent solar concentrators (LSCs) to enhance the concentrators' performance. With low reflection on the air-glass interface of the glass plate in a thin-film LSC, a negative replica layer enables the scattering of incident sunlight and increases the path of light transmitted into the LSC and the thin phosphor layer at the bottom surface of the LSC. The incident sunlight is therefore more likely to interact with the phosphor particles in the thin-film phosphor layer, thereby enhancing the performance of the LSC. In this study, semitransparent thin-film LSCs with different inorganic phosphors were examined. The experimental results revealed that the optical collection efficiency of semitransparent thin-film LSCs covered with negative replica layers of leaf surface microstructures was higher than that of the semitransparent thin-film LSCs without negative replica layers. Furthermore, the LSCs with negative replica layers with high haze ratios exhibited high optical collection efficiency. Integrating negative replica layers of leaf surface microstructures as semitransparent layers in thin-film LSCs may optimize the application of LSCs in building-integrated photovoltaics (BIPVs).
在本研究中，叶片表面微观结构的负性复制层被用于覆盖半透明薄膜发光太阳能聚光器（LSCs）的顶面，以提高聚光器的性能。由于薄膜LSC中玻璃板的气-玻璃界面反射率较低，负性复制层能够使入射太阳光发生散射，并增加进入LSC以及LSC底面薄荧光粉层的光程。因此，入射太阳光更有可能与薄膜荧光粉层中的荧光粉颗粒相互作用，从而提高LSC的性能。在本研究中，对具有不同无机荧光粉的半透明薄膜LSCs进行了研究。实验结果表明，覆盖有叶片表面微观结构负性复制层的半透明薄膜LSCs的光学收集效率高于没有负性复制层的半透明薄膜LSCs。此外，具有高雾度比的负性复制层的LSCs表现出高光学收集效率。将叶片表面微观结构的负性复制层作为半透明层集成到薄膜LSCs中，可能会优化LSCs在建筑一体化光伏（BIPV）中的应用。
