Semitransparent solar cells not only can generate electricity but also exhibit promising application in facades and roofs of building, as well as the coatings of vehicle. Ideal semitransparent solar cells should have a high utilization efficiency of ultraviolet and near infrared photons, and maintain an appropriate balance between absorption and transparency in visible light range. Organic semiconducting materials with adjustable optical band gap own great potential in preparing highly efficient semitransparent organic solar cells (OSCs). There are great challenges in achieving semitransparent electrodes with good conductivity and high transmittance in visible light range, as well as high reflectance in ultraviolet and near infrared range. In this critical review, we summarize the recent progress of semitransparent OSCs, concentrating on organic semiconducting materials, semitransparent top electrode and device engineering. Semitransparent OSCs have attracted more and more attention due to its great potential in energy source in door, electricity-generating windows, building-integrated photovoltaics and agricultural greenhouse.

半透明太阳能电池不仅可以发电，而且在建筑物的外墙和屋顶以及车辆的涂料中也显示出广阔的应用前景。理想的半透明太阳能电池应具有较高的紫外线和近红外光子利用效率，并在可见光范围内保持吸收率和透明度之间的适当平衡。具有可调光带隙的有机半导体材料在制备高效的半透明有机太阳能电池（OSC）中具有巨大的潜力。在具有在可见光范围内具有良好的导电性和高透射率以及在紫外和近红外范围内具有高反射率的半透明电极方面存在很大的挑战。在这篇重要的评论中，我们总结了半透明OSC的最新进展，专注于有机半导体材料，半透明顶部电极和器件工程。半透明OSC由于其在门，发电窗户，建筑集成光伏和农业温室能源方面的巨大潜力而​​受到越来越多的关注。