2, South China University of Technology, Guang Zhou, , China
The stability issue is a big challenge in perovskite solar cell. We study the degradation of perovskite and perform coordination enginnering to enhance the stability. The intermediate compounds of degradation and formation are identified and new reaction routes are developed. Large gain and high performance perovskite solar cell with efficiency above 20% are achieved. Through the interface passivation, the optoelectronic and stability are greatly enhanced, aiming to promote the commercialization step.