Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss
Citations Over TimeTop 1% of 2020 papers
Abstract
Further improvement and stabilization of perovskite solar cell (PSC) performance are essential to achieve the commercial viability of next-generation photovoltaics. Considering the benefits of fluorination to conjugated materials for energy levels, hydrophobicity, and noncovalent interactions, two fluorinated isomeric analogs of the well-known hole-transporting material (HTM) Spiro-OMeTAD are developed and used as HTMs in PSCs. The structure-property relationship induced by constitutional isomerism is investigated through experimental, atomistic, and theoretical analyses, and the fabricated PSCs feature high efficiency up to 24.82% (certified at 24.64% with 0.3-volt voltage loss), along with long-term stability in wet conditions without encapsulation (87% efficiency retention after 500 hours). We also achieve an efficiency of 22.31% in the large-area cell.
Related Papers
- → Surface passivation of perovskite film for efficient solar cells(2019)4,601 cited
- → Solution-Processed Cu2O and CuO as Hole Transport Materials for Efficient Perovskite Solar Cells(2015)508 cited
- → Direct formation of I3- ions in organic cation solution for efficient perovskite solar cells(2018)35 cited
- → A Highly Stable All‐Inorganic CsPbBr3 Perovskite Solar Cell(2019)39 cited
- → Quinoxaline‐Based Materials That Exhibit a Significant Passivation Effect and Lead to the Enhancement in the Power Conversion Efficiency of Perovskite Solar Cells(2023)2 cited