Fabrication and Performance of a Perovskite Solar Cell: Effect of Acetylacetone on Compact TiO2 Layer

Abstract

Solar energy has been the most emphasized issue in recent years, as it is sustainable and causes zero emissions. Solar cells are of interest because they convert sunlight into electricity through photovoltaic effects. Over the last ten years, the efficiency of perovskite solar cells has achieved 25% due to the development of synthesis techniques and electrode materials etc. The electron transport layer, a hole transport layer their thickness and structure of surface etc. act an important role in improving the performance of perovskite solar cells. We have investigated the effect of the acid-assisted route and the acetylacetone-assisted (AA) route on TiO2 films and thus the effect of the efficiency of perovskite solar cells. Perovskite (CH3NH3PbI3) solar cells based on different c-TiO2 have been fabricated by the spin coating route, and the overall experimental section is made in the nitrogen medium at room temperature. Cracked c-TiO2 film obtained via the acid-assisted route. The planar heterojunction structure of ITO/AA-TiO2/CH3NH3PbI3/P3HT/Ag resulted 0.03% of power conversion efficiency (PCE). However, the perovskite solar cells with a mesoporous heterojunction structure of ITO/ AA-TiO2/m- TiO2 /CH3NH3PbI3/P3HT/Ag resulted 0.1% of PCE.