有機太陽能電池具有非常多優越的特性,像是低成本、溶液製程、高效率等優點,目前被大家所矚目成為新一代的太陽能電池。 在矽/聚(3,4 - 乙烯二氧噻吩):聚苯乙烯磺酸 (Si/ PEDOT:PSS) 混合式太陽能電池中,本研究證實多層次結構包含微米金字塔和奈米線具有全方位光擷取特性,光電轉換效率高達11.50%。此結構之特性包括優越的光捕捉能力,顯著增加PN界面面積,而且縮短載流子的擴散距離,而提高光伏特性包括JSC,FF和PCE。 在高角度入射角可提高發電量達253.8%,具有此分層結構的混合太陽能電池表現出優秀的全方位操作能力。本研究設計出之分層結構元件極具潛力,開發成本低,效率高,期望在未來能實用於太陽能電池。
Hybrid solar cell has received an intensive attention due to their promising features, such as low cost, simple solution-based process, and high efficiency. Hierarchical structures consisting of micropyramids and nanowires are demonstrated in Si/PEDOT:PSS hybrid cells to achieve a power conversion efficiency up to 11.50% with excellent omnidirectionality. The structure provides a combined concepts of superior light trapping ability, significant increase of p-n junction areas, and short carrier diffusion distance, improving the photovoltaic characteristics including JSC, FF, and PCE. The enhancement of power generation is up to 253.8% at high incident angles, showing the outstanding omnidirectional operation ability of hybrid cells with hierarchical Si surfaces. This properly designed hierarchical-structured device paves a promising way for developing low cost, high efficiency, and practical solar applications in the future.