Stretchable photovoltaics are emerging power sources for collapsible electronics, biomedical devices, and buildings and vehicles with curved surfaces. Development of stretchable photovoltaics are crucial to achieve rapid growth of the future photovoltaic market. However, owing to their rigidity, existing thin-film solar cells based predominantly on silicon, compound semiconductors, and perovskites are difficult to apply to 3D curved surfaces, which are potential real-world candidates. Herein, we present a stretchable micro-scale concentrator photovoltaic module with a geometrical concentration ratio of 3.5×. When perfectly fitted on a 3D curved surface with a sharp curvature, the prototype module achieves an outdoor power conversion efficiency of 15.4% and the daily generated electricity yield improves to a maximum of 190% relative to a non-concentration stretchable photovoltaic module. Thus, this module design enables high areal coverage on 3D curved surfaces, while generating a higher electricity yield in a limited installation area.

可伸展的光伏是新兴的可折叠电子产品，生物医学设备以及具有弯曲表面的建筑物和车辆的电源。可拉伸光伏技术的发展对于实现未来光伏市场的快速增长至关重要。但是，由于其刚性，现有的主要基于硅，化合物半导体和钙钛矿的薄膜太阳能电池很难应用于3D曲面，而3D曲面是潜在的现实应用。在这里，我们提出了一种可伸缩的微型聚光光伏组件，其几何聚光比为3.5倍。当完美地装配在具有急剧曲率的3D曲面上时，原型模块的室外电源转换效率为15。相对于非浓度可拉伸光伏组件，其每日发电量提高了4％，最大发电量提高了190％。因此，此模块设计可在3D曲面上实现高面积覆盖，同时在有限的安装区域内产生更高的电产量。