Yixin Zhao

Perovskite & Organic devices

Shanghai Jiao Tong University, Shanghai, China

Email: yixin.zhao@sjtu.edu.cn

Abstract for Presentation

Chemical Design of Stable Lead Halide Perovskite toward Efficient Photovoltaics

Metal halide perovskites have been widely used in optoelectronics. The stability of lead halide perovskite materials is the key for stabilizing of perovskite optoelectronics. Various technologies have been developed to enhance the stability of perovskite solar cell and optoelectronics without decreasing efficiency. The reduced dimensional perovskite with high stability was developed to passivate the hybrid perovskite with high efficiency and high stability. Recently, we develop some 1D perovskite with highly stability to both moisture and thermal pressure. The Cs based perovskites are one of the most promising ones. The Cs based FA-Cs with tunable tolerant factor and high stability are promising choice to realize high efficiency and stability. However, the crystallization of FA-Cs perovskite faces the serious challenge of phase segregation. We develop the MA and DMA cation induced crystallization of phase pure FA-Cs mixed cation perovskite solar cell, which exhibiting both the high efficiency and high stability. Furthermore. the all-inorganic lead halide perovskite without volatile component would be a promising alternative candidate for high efficiency photovoltaics. To enhance the performance and stability of all-inorganic CsPbI3 perovskite, the 2D/3D configuration and functional organic cation surface termination approach was developed to significantly enhance the stability and performance of black phase CsPbI3 solar cells.

References

[1] X. Liu, X. Wang, T. Zhang, Y. Miao, Z. Qin, Y. Chen, Y. Zhao, Angew. Chem. Int. Ed. 2021, 60 (22), 12351-12355.

[2] Y. Wang, M. Dar, L.Ono, T. Zhang, M. Kan, Y. Li, L. Zhang, X. Wang, Y. Yang, X. Gao, Y. Qi, M. Grätzel, Y. Zhao, Science 2019, 365, 591-595.

[3] T. Zhang, M. Dar, G. Li, F. Xu, N. Guo, M. Grätzel, Y. Zhao, Sci. Adv., 2017, 3, e1700841.

Zhejiang University, Hangzhou, China

Presentation Title:Hyperdoping silicon nanocrystals for infrared applications.