Efficient and Stable Mesoscopic Perovskite Solar Cells Using a Dopant?Free D–A Copolymer Hole?Transporting Layer
نویسندگان
چکیده
Addressing the stability issue in perovskite solar cells (PSCs) is a crucial step for commercialization purposes. Finding novel and stable hole-transporting layer (HTL) one of most effective strategies to solve this problem. Herein, new polymeric HTL, namely poly{2,7-[(5,5-bis(3?,7?-dimethyloctyl)-5 H-1,8-dithia-as-indacenone]-alt-5,5-[5?,6?-bis(octyloxy)-4?,7?-di-2-thienyl-2?,1?,3?-benzothiadiazole]} (PDTIDTBT) synthesized, indicating great property as compared with commonly used 2,2?,7,7?-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9?-spirobifluorene (spiro-OMeTAD) HTL. This polymer shows good mobility suitable band alignment respect triple A-cation film, which comparable state-of-art HTLs. Therefore, mesoscopic PSCs are fabricated by PDTIDTBT HTL considered interface engineering technique using thin poly(methyl methacrylate) (PMMA) at perovskite/HTL interface. Based on these modifications, PSC maximum power conversion efficiency (PCE) 19.89% achieved, higher than PCE spiro-based (19.28%). In addition, PDTIDTBT-based show excellent operational ambient better spiro ones.
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ژورنال
عنوان ژورنال: Solar RRL
سال: 2021
ISSN: ['2367-198X']
DOI: https://doi.org/10.1002/solr.202000801