Semi-transparent organic photovoltaic cells (STOPVs) hold the great potential as a solar conversion source installed on the glass curtain walls. The cell performance of STOPVs is to some extent balanced among the absorption, transmission and reflection of the incident solar radiation. For the practical application with a defined transparency, the efficiency of STOPVs can be optimized by maximizing the light absorption as well as minimizing the reflection that contribute to the light pollution. Herein, a low-reflectance STOPV is presented with relatively high efficiency, high transmittance, and suitable color rendering property. A 15.9% increase in photocurrent and a 28% decrease in reflection are realized with the implementation of biomimetic moth-eye nanostructures into the dielectric-metal-dielectric transparent electrodes. For an optimized PTB7:PC₇₁BM-based STOPV on flexible plastic substrate, the average transmittance in the visible region is kept at 46.1% and the average reflectance is reduced to 10.3%, leading a power conversion efficiency of 3.4%. The pathway described here is promising for opening up opportunities of reliable STOPVs towards the future commercial applications.

半透明有机光伏电池（STOPV）具有巨大的潜力，可以作为安装在玻璃幕墙上的太阳能转换源。STOPV的电池性能在一定程度上平衡了入射太阳辐射的吸收，透射和反射。对于具有定义的透明度的实际应用，可以通过最大化光吸收以及最小化有助于光污染的反射来优化STOPV的效率。在此，提出了效率较高，透射率较高且具有适当的显色性的低反射率的STOPV。通过在电介质-金属-电介质透明电极中实现仿生蛾眼纳米结构，实现了光电流增加15.9％和反射减少28％。对于优化的PTB7：在柔性塑料基板上使用₇₁ BM基STOPV，可见光区域的平均透射率保持在46.1％，平均反射率降低到10.3％，功率转换效率为3.4％。此处描述的途径有望为未来的商业应用打开可靠的STOPV机会。