title: Solvent-Assisted Preparation of High-Performance Mesoporous CH₃NH₃Pbl₃ Perovskite Solar Cells.
abstract: Organometal trihalide perovskite based solar cells have attracted great attention worldwide since their power conversion efficiency (PCE) have risen to over 15% within only 3 years of development. Comparing with other types of perovskite solar cells, mesostructured perovskite solar cells based on CH₃NH₃Pbl₃ as light harvesting material have already demonstrated remarkable advance in performance and reproducibility. Here, we reported a mesoscopic TiO₂/CH₃NH₃Pbl₃ heterojunction solar cell with uniform perovskite thin film prepared via solvent-assisted solution processing method. The best performing device delivered photocurrent density of 20.11 mA cm⁻², open-circuit voltage of 1.02 V, and fill factor of 0.70, leading to a PCE of 14.41%. A small anomalous hysteresis in the J-V curves was observed, where the PCE at forward scan was measured to be 84% of the PCE at reverse scan. Based on a statistical analysis, the perovskite solar cells prepared by the reported method exhibited reproducible and high PCE, indicating its promising application in the fabrication of low-cost and high-efficiency perovskite solar cells.
authors.forename: Zhi-Hua
authors.initials: ZH
authors.lastname: Li
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.forename: Jing-Yuan
authors.initials: JY
authors.lastname: Ma
authors.forename: Yan
authors.initials: Y
authors.lastname: Jiang
authors.forename: Qian-Qing
authors.initials: QQ
authors.lastname: Ge
authors.forename: Jie
authors.initials: J
authors.lastname: Ding
authors.forename: Jin-Song
authors.initials: JS
authors.lastname: Hu
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Wan
mesh_terms: D017610:Calcium Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D010087:Oxides / Q000138:chemical synthesis* / Q000737:chemistry*; D016062:Porosity; D012993:Solar Energy; D014025:Titanium / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D010087:Oxides; C059910:perovskite; D014025:Titanium