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Additive‐Free Transparent Triarylamine‐Based Polymeric Hole‐Transport Materials for Stable Perovskite Solar Cells
Author(s) -
Matsui Taisuke,
Petrikyte Ieva,
Malinauskas Tadas,
Domanski Konrad,
Daskeviciene Maryte,
Steponaitis Matas,
Gratia Paul,
Tress Wolfgang,
CorreaBaena JuanPablo,
Abate Antonio,
Hagfeldt Anders,
Grätzel Michael,
Nazeeruddin Mohammad Khaja,
Getautis Vytautas,
Saliba Michael
Publication year - 2016
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201600762
Subject(s) - perovskite (structure) , materials science , energy conversion efficiency , doping , polymer , amine gas treating , electron mobility , chemical engineering , optoelectronics , nanotechnology , chemistry , organic chemistry , composite material , engineering
Triarylamine‐based polymers with different functional groups were synthetized as hole‐transport materials (HTMs) for perovskite solar cells (PSCs). The novel materials enabled efficient PSCs without the use of chemical doping (or additives) to enhance charge transport. Devices employing poly(triarylamine) with methylphenylethenyl functional groups (V873) showed a power conversion efficiency of 12.3 %, whereas widely used additive‐free poly[bis(4‐phenyl)(2,4,6‐trimethylphenyl)amine] (PTAA) demonstrated 10.8 %. Notably, devices with V873 enabled stable PSCs under 1 sun illumination at maximum power point tracking for approximately 40 h at room temperature, and in the dark under elevated temperature (85 °C) for more than 140 h. This is in stark contrast to additive‐containing devices, which degrade significantly within the same time frame. The results present remarkable progress towards stable PSC under real working conditions and industrial stress tests.