Inspired by light/sound trapping in whispering-gallery, a light trapping structure mimicking whispering-gallery (WG) structure is constructed on perovskite active layer for antireflection and light harvesting via simply imprinted process with robust microstructure stamp for perovskite solar cells (PSCs). The WG structured perovskite films can achieve light trapping by optical feedback and gradually absorption. The crystallization and size of perovskite are improved by the imprinting process with robust micro-patterned stamp. Moreover, this method can efficiently accelerate electron-hole separation and suppress recombination by extract tentacles of the arrayed column structure. Consequently, the power conversion efficiency of the whispering-gallery structured PSC is improved to 19.80%, which is ca. 29.4% higher than that of the non-imprinted PSC (15.30%).

受到耳语画廊中光/声陷阱的启发，在钙钛矿有源层上构建了模仿耳语画廊（WG）结构的光陷阱结构，以通过简单的压印工艺和钙钛矿太阳能电池（PSC）的坚固微结构印章来进行减反射和光收集。WG结构的钙钛矿薄膜可以通过光反馈并逐渐吸收来实现光捕获。钙钛矿的结晶和尺寸可通过带有坚固微图案印模的压印工艺来改善。此外，该方法可以有效地加速电子-空穴分离并通过排列的柱状结构的提取触角抑制重组。因此，耳语画廊结构的PSC的功率转换效率提高到19.80％，大约为。29。