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| Home > Publications database > Conformational and Compositional Tuning of Phenanthrocarbazole-Based Dopant-Free Hole-Transport Polymers Boosting the Performance of Perovskite Solar Cells > print |
| 001 | 454549 | ||
| 005 | 20250716151648.0 | ||
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| 100 | 1 | _ | |a Yao, Zhaoyang |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Conformational and Compositional Tuning of Phenanthrocarbazole-Based Dopant-Free Hole-Transport Polymers Boosting the Performance of Perovskite Solar Cells |
| 260 | _ | _ | |a Washington, DC |c 2020 |b American Chemical Society |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a Conjugated polymers are regarded as promising candidates for dopant-free hole-transport materials (HTMs) in efficient and stable perovskite solar cells (PSCs). Thus far, the vast majority of polymeric HTMs feature structurally complicated benzo[1,2-b:4,5-b’]dithiophene (BDT) analogs and electron-withdrawing heterocycles, forming a strong donor–acceptor (D–A) structure. Herein, a new class of phenanthrocarbazole (PC)-based polymeric HTMs (PC1, PC2, and PC3) has been synthesized by inserting a PC unit into a polymeric thiophene or selenophene chain with the aim of enhancing the $π–π$ stacking of adjacent polymer chains and also to efficiently interact with the perovskite surface through the broad and planar conjugated backbone of the PC. Suitable energy levels, excellent thermostability, and humidity resistivity together with remarkable photoelectric properties are obtained via meticulously tuning the conformation and elemental composition of the polymers. As a result, PSCs containing PC3 as dopant-free HTM show a stabilized power conversion efficiency (PCE) of 20.8% and significantly enhanced longevity, rendering one of the best types of PSCs based on dopant-free HTMs. Subsequent experimental and theoretical studies reveal that the planar conformation of the polymers contributes to an ordered and face-on stacking of the polymer chains. Furthermore, introduction of the “Lewis soft” selenium atom can passivate surface trap sites of perovskite films by Pb–Se interaction and facilitate the interfacial charge separation significantly. This work reveals the guiding principles for rational design of dopant-free polymeric HTMs and also inspires rational exploration of small molecular HTMs. |
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| 700 | 1 | _ | |a Zhang, Fuguo |0 0000-0002-2789-7714 |b 1 |
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| 700 | 1 | _ | |a Gardner, James M. |0 0000-0002-4782-4969 |b 15 |
| 700 | 1 | _ | |a Kloo, Lars |0 0000-0002-0168-2942 |b 16 |
| 700 | 1 | _ | |a Sun, Licheng |0 P:(DE-H253)PIP1083782 |b 17 |e Corresponding author |
| 773 | _ | _ | |a 10.1021/jacs.0c08352 |g Vol. 142, no. 41, p. 17681 - 17692 |0 PERI:(DE-600)1472210-0 |n 41 |p 17681 - 17692 |t Journal of the American Chemical Society |v 142 |y 2020 |x 1520-5126 |
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