title: Additive-Free Transparent Triarylamine-Based Polymeric Hole-Transport Materials for Stable Perovskite Solar Cells.
abstract: 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.
authors.affiliation: Advanced Research Division, Materials Research Laboratory, Panasonic Corporation, 1006 Kadoma, Kadoma City, Osaka, 571-8501, Japan.
authors.forename: Taisuke
authors.initials: T
authors.lastname: Matsui
authors.affiliation: Department of Organic Chemistry, Kaunas University of Technology, 19, Kaunas, 50254, Lithuania.
authors.forename: Ieva
authors.initials: I
authors.lastname: Petrikyte
authors.affiliation: Department of Organic Chemistry, Kaunas University of Technology, 19, Kaunas, 50254, Lithuania.
authors.forename: Tadas
authors.initials: T
authors.lastname: Malinauskas
authors.affiliation: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, 1015, Lausanne, Switzerland.
authors.forename: Konrad
authors.initials: K
authors.lastname: Domanski
authors.affiliation: Department of Organic Chemistry, Kaunas University of Technology, 19, Kaunas, 50254, Lithuania.
authors.forename: Maryte
authors.initials: M
authors.lastname: Daskeviciene
authors.affiliation: Department of Organic Chemistry, Kaunas University of Technology, 19, Kaunas, 50254, Lithuania.
authors.forename: Matas
authors.initials: M
authors.lastname: Steponaitis
authors.affiliation: Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Sion, CH-1951, Switzerland.
authors.forename: Paul
authors.initials: P
authors.lastname: Gratia
authors.affiliation: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, 1015, Lausanne, Switzerland.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Tress
authors.affiliation: Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, 1015, Lausanne, Switzerland.
authors.forename: Juan-Pablo
authors.initials: JP
authors.lastname: Correa-Baena
authors.affiliation: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, 1015, Lausanne, Switzerland.
authors.forename: Antonio
authors.initials: A
authors.lastname: Abate
authors.affiliation: Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, 1015, Lausanne, Switzerland.
authors.forename: Anders
authors.initials: A
authors.lastname: Hagfeldt
authors.affiliation: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, 1015, Lausanne, Switzerland.
authors.forename: Michael
authors.initials: M
authors.lastname: Grätzel
authors.affiliation: Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Sion, CH-1951, Switzerland.
authors.forename: Mohammad Khaja
authors.initials: MK
authors.lastname: Nazeeruddin
authors.affiliation: Department of Organic Chemistry, Kaunas University of Technology, 19, Kaunas, 50254, Lithuania. vytautas.getautis@ktu.lt.
authors.forename: Vytautas
authors.initials: V
authors.lastname: Getautis
authors.affiliation: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, 1015, Lausanne, Switzerland. michael.saliba@epfl.ch.
authors.forename: Michael
authors.identifier: http://orcid.org/0000-0002-6818-9781
authors.initials: M
authors.lastname: Saliba
mesh_terms: D000588:Amines / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D004355:Drug Stability; D011211:Electric Power Supplies; D010087:Oxides / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012993:Solar Energy; D013696:Temperature; D014025:Titanium / Q000737:chemistry*
chemical_list: D000588:Amines; D017610:Calcium Compounds; D010087:Oxides; D011108:Polymers; C059910:perovskite; D014025:Titanium
keywords: additive free; hole-transport material; perovskite solar cells; polymer; stability