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Achieving Large‐Area Planar Perovskite Solar Cells by Introducing an Interfacial Compatibilizer
Author(s) -
Lee Jinho,
Kang Hongkyu,
Kim Geunjin,
Back Hyungcheol,
Kim Junghwan,
Hong Soonil,
Park Byoungwook,
Lee Eunhag,
Lee Kwanghee
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201606363
Subject(s) - materials science , perovskite (structure) , dewetting , energy conversion efficiency , chemical engineering , nanotechnology , amphiphile , planar , optoelectronics , thin film , polymer , copolymer , composite material , computer graphics (images) , computer science , engineering
Despite the recent unprecedented increase in the power conversion efficiencies (PCEs) of small‐area devices (≤0.1 cm 2 ), the PCEs deteriorate drastically for PSCs of larger areas because of the incomplete film coverage caused by the dewetting of the hydrophilic perovskite precursor solutions on the hydrophobic organic charge‐transport layers (CTLs). Here, an innovative method of fabricating scalable PSCs on all types of organic CTLs is reported. By introducing an amphiphilic conjugated polyelectrolyte as an interfacial compatibilizer, fabricating uniform perovskite films on large‐area substrates (18.4 cm 2 ) and PSCs with the total active area of 6 cm 2 (1 cm 2 × 6 unit cells) via a single‐turn solution process is successfully demonstrated. All of the unit cells exhibit highly uniform PCEs of 16.1 ± 0.9% (best PCE of 17%), which is the highest value for printable PSCs with a total active area larger than 1 cm 2 .