23 July 2019
Research group led by Prof. CHEN Weiqiu from the Institute of Applied Mechanics has made new progress in the study of the photoelectric hysteresis mechanism of perovskite solar cells. Research results titled “Nanoscale insights into photovoltaic hysteresis in triple-cation mixed-halide perovskite: resolving the role of polarization and ionic migration” was published in Advanced Materials, a well-known journal of Materials science. （Adv. Mater. 2019, 1902870，IF=25.809）
Research groups from Zhejiang University, University of Washington, Shenzhen Institute of Advanced Technology of CAS, Shijiazhuang Tiedao University jointly worked on the Ternary cation mixed halide perovskite solar cell material. They used atomic force microscopy (afm) to characterize the piezoelectric responses and photoelectrical properties at nanoscale, and found that the photopolarization enhancement effect was obvious, while the ion motion did not change significantly.
The work is supported by the National Key Research and Development Program, the National Natural Science Foundation of China and the Shenzhen Peacock Program.
