| abstract |
The invention belongs to the field of perovskite solar cells, and provides a perovskite solar cell doped with potassium thiocyanate and a preparation method thereof. The structure of the perovskite battery involved is, from bottom to top, an FTO conductive glass, an electron transport layer, a perovskite light absorption layer, a hole transport layer and a metal electrode. The present invention aims to solve the problems of poor crystallinity of perovskite and large hysteresis of perovskite battery. By doping potassium thiocyanate in the perovskite light-absorbing layer, the crystallization kinetics of perovskite can be changed, the grain growth can be promoted, the internal defect states can be passivated, and the phase structure of perovskite can be stabilized. Inhibition of ion migration can effectively improve the crystalline quality of perovskite, improve the photoelectric efficiency and stability of perovskite cells, and eliminate the hysteresis effect. |