[14a-1G-1~8] 12.5 Organic solar cells

▼ [14a-1G-3] Improved CH₃NH₃PbI₃ Perovskite Morphology for Highly Efficient Solar Cells via Air-Assisted Flowing in the Two-Step Spin Coating Method

〇(D)Vincent Eze¹, Binglong Lei¹, Mori Tatsuo¹ (1.Aichi Institute of Technology)

Keywords:Organic-Inorganic Solar Cells,Perovskite Solar Cells,Air-Assisted Flowing

To date, there have been a multitude of reports on different methods to fabricate organic-inorganic metal halide perovskite films for high-efficiency solar cells. Here, planar heterojunction (PHJ) CH₃NH₃PbI₃ perovskite solar cells have been prepared via two-step spin coating method. The uniformity of the perovskite light-absorbing layer was elevated by using air-assisted flowing (AAF) during spin coating. The photovoltaic performances of films prepared with AAF (w/ AAF) and without AAF (w/o AAF) were compared. Perovskite solar cells (PSCs) constructed w/o AAF showed power conversion efficiency (PCE) of 8.67% while higher PCE of 13.28% was obtained from a w/ AAF based perovskite solar cell, mainly due to higher photovoltaic parameters.