Effects of drying time on the formation of merged MAPbI3 grains and their use in inverted perovskite photovoltaic cells

Qi Bin Ke¹, Sheng Hsiung Chang¹, Anjali Chandel^1*

¹Physics, 中原大學, Taoyuan, Taiwan

* Presenter:Anjali Chandel, email:anjalichandel62@gmail.com

The grain sizes of CH3NH3PbI3 (MAPbI3) thin films and the atomic contact strength at the MAPbI3/P3CT-Na interface is manipulated by varying the drying time of the saturated MAPbI3 precursor solutions, which can influence the device performance and lifespan of inverted perovskite solar cells. It is noted that the use of the optimized drying time during the spin coating process results in the formation of merged MAPbI3 grains while keeping the contact quality at the MAPbI3/P3CT-Na interface, which boosts the device performance and lifespan of the resultant perovskite photovoltaic cells

Keywords: Drying time, MAPbI3/P3CT interface, merged MAPbI3 grains