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- W3149297858 abstract "• Diprophylline modifies the work function of ITO and increases the transmittance of P3CT-Na HTL. • The doped diprophylline could simultaneously interact with ITO and P3CT-Na. • The diprophylline could fix P3CT-Na onto the ITO substrate and enhancing the durability of HTL. • Inverted PSCs utilizing diprophylline doped P3CT-Na HTL yield a remarkable efficiency of 20.87%. • The device fabricated with ultrasonically cleaned doped HTL showed an efficiency of 18.77%. Poly[3-(4-carboxybutyl) thiophene-2,5-diyl] (P3CT) is extensively used as hole transport layers (HTL) for efficient inverted perovskite solar cells (PSCs). However, some drawbacks of P3CT-Na such as strong aggregation tendency and unwell-matched energy alignment restrict the application of P3CT-Na-based devices. Here, diprophylline is first used to modify the P3CT-Na HTL in inverted PSCs. Diprophylline modifies work function of ITO (indium tin oxide) by self-assembling onto the ITO surface. Meanwhile, it could interact with P3CT-Na through hydrogen bonding interaction, thus inducing ordered arrangement of P3CT-Na molecules, and increasing transmittance of the HTL. In addition, diprophylline could partially dissolve into the upper perovskite layer, and facilitate the perovskite crystallization. As a result, inverted PSCs utilizing diprophylline added P3CT-Na as HTL yield a remarkable efficiency of 20.87% and excellent long-term stability. Notably, the fill factor ( FF ) is approaching 84%, representing one of the highest results in inverted PSCs. More interestingly, when the diprophylline treated P3CT-Na layer undergoes ultrasonic cleaning in deionized water for 10 mins, the as-fabricated PSCs still show a high efficiency of 18.77%, manifesting good durability of the HTL. Thus, the recyclability and cost-effectiveness of the HTL makes it more applicable in future commercialization. This work provides a new strategy of improving efficiency and long-term stability of inverted PSCs through HTL engineering." @default.
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- W3149297858 date "2021-09-01" @default.
- W3149297858 modified "2023-09-28" @default.
- W3149297858 title "Engineering of P3CT-Na through diprophylline treatment to realize efficient and stable inverted perovskite solar cells" @default.
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- W3149297858 doi "https://doi.org/10.1016/j.cej.2021.129581" @default.
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