Improving parameters of inorganic perovskite solar cells by more than one spin coating method

This work reports the fabrication process for preparation of perovskite films with good quality morphology and optimal thickness by a simple more than one spin coating or multiple (MSC) method. It should be noted that are prepared without antisolvent engineering in full air conditions. In this work, we obtained an power conversion efficiency (PCE) value CsPbI3 solar cells (PSCs) at 11.69%. Although, PCE result is not high enough, however, MSC method provides uncomplicated approach PSCs. CsPbI3.