Highly efficient light management for perovskite solar cells
Dong-Lin Wang¹, Hui-Juan Cui¹, Guo-Jiao Hou², Zhen-Gang Zhu^1,2, Qing-Bo Yan³ & Gang Su¹

¹School of Physics, University of Chinese Academy of Sciences, P. O. Box 4588, Beijing 100049, China.

²School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049,

China.

³College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences,
Beijing 100049, China. Correspondence and requests for materials should be addressed to G.S. (email: gsu@ucas.ac.cn)

Organic-inorganic halide perovskite solar cells have enormous potential to impact the existing photovoltaic industry. As realizing a higher conversion efficiency of the solar cell is still the most crucial task, a great number of schemes were proposed to minimize the carrier loss by optimizing the electrical properties of the perovskite solar cells. Here, we focus on another significant aspect that is to minimize the light loss by optimizing the light management to gain a high efficiency for perovskite solar cells. In our scheme, the slotted and inverted prism structured SiO2 layers are adopted to trap more light into the solar cells, and a better transparent conducting oxide layer is employed to reduce the parasitic absorption. For such an implementation, the efficiency and the serviceable angle of the perovskite solar cell can be promoted impressively. This proposal would shed new light on developing the highperformance perovskite solar cells.