Microfiber Optic Arrays as Top Coatings for Front-Contact Solar Cells toward Mitigation of Shading Loss
Microfiber Optic Arrays as Top Coatings for Front-Contact Solar Cells toward Mitigation of Shading Loss
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DOI：
10.1021/acsami.9b17803
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发表时间：
2019-12-18
影响因子：
9.5
通讯作者：
Hosein, Ian D.
中科院分区：
文献类型：
--
作者：
Chen, Fu-Hao;Biria, Saeid;Hosein, Ian D.
微纤维光学阵列结构被制造并用作覆盖前接触硅太阳能电池的光学结构。该阵列是通过光致自写在光交联丙烯酸酯树脂，产生周期性间隔，高纵横比，垂直排列的锥形微纤维沉积在透明基板上。然后将该结构定位在太阳能电池表面上并密封到太阳能电池表面上。它们的光纤特性使得能够收集非垂直入射光，从而允许该结构通过将入射光重定向远离触点并朝向太阳能电池来减轻遮光损失。角平均外量子效率名义上增加了1.61%，导致短路电流密度增加到1.13 mA/cm（2）。这项工作展示了一种新的方法，使用可扩展的，简单的，基于光的增材制造工艺来增强光收集和转换。
Microfiber optic array structures are fabricated and employed as an optical structure overlaying a front-contact silicon solar cell. The arrays are synthesized through light-induced self-writing in a photo-crosslinking acrylate resin, which produces periodically spaced, high-aspect-ratio, and vertically aligned tapered microfibers deposited on a transparent substrate. The structure is then positioned over and sealed onto the solar cell surface. Their fiber optic properties enable collection of non-normal incident light, allowing the structure to mitigate shading loss through the redirection of incident light away from contacts and toward the solar cell. Angle-averaged external quantum efficiency increases nominally by 1.61%, resulting in increases in short-circuit current density up to 1.13 mA/cm(2). This work demonstrates a new approach to enhance light collection and conversion using a scalable, straightforward, light-based additive manufacturing process.