title: High Temperature-Stable Perovskite Solar Cell Based on Low-Cost Carbon Nanotube Hole Contact.
abstract: Mixed ion perovskite solar cells (PSC) are manufactured with a metal-free hole contact based on press-transferred single-walled carbon nanotube (SWCNT) film infiltrated with 2,2,7,-7-tetrakis(N,N-di-p-methoxyphenylamine)-9,90-spirobifluorene (Spiro-OMeTAD). By means of maximum power point tracking, their stabilities are compared with those of standard PSCs employing spin-coated Spiro-OMeTAD and a thermally evaporated Au back contact, under full 1 sun illumination, at 60 °C, and in a N2atmosphere. During the 140 h experiment, the solar cells with the Au electrode experience a dramatic, irreversible efficiency loss, rendering them effectively nonoperational, whereas the SWCNT-contacted devices show only a small linear efficiency loss with an extrapolated lifetime of 580 h.
authors.affiliation: Department of Chemistry - Ångström Laboratory Physical Chemistry, Uppsala University, Box 523, 75120, Uppsala, Sweden.
authors.forename: Kerttu
authors.initials: K
authors.lastname: Aitola
authors.affiliation: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique de Fédérale de Lausanne, CH-1015, Lausanne, Switzerland.
authors.forename: Konrad
authors.initials: K
authors.lastname: Domanski
authors.affiliation: Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.
authors.forename: Juan-Pablo
authors.initials: JP
authors.lastname: Correa-Baena
authors.affiliation: Department of Chemistry - Ångström Laboratory Physical Chemistry, Uppsala University, Box 523, 75120, Uppsala, Sweden.
authors.forename: Kári
authors.initials: K
authors.lastname: Sveinbjörnsson
authors.affiliation: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique de Fédérale de Lausanne, CH-1015, Lausanne, Switzerland.
authors.forename: Michael
authors.initials: M
authors.lastname: Saliba
authors.affiliation: Adolphe Merkle Institute, University of Fribourg, CH-1700, Fribourg, Switzerland.
authors.forename: Antonio
authors.initials: A
authors.lastname: Abate
authors.affiliation: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique de Fédérale de Lausanne, CH-1015, Lausanne, Switzerland.
authors.forename: Michael
authors.initials: M
authors.lastname: Grätzel
authors.affiliation: Department of Applied Physics, Aalto University, P.O. Box 15100, 00076, Aalto, Finland.
authors.forename: Esko
authors.initials: E
authors.lastname: Kauppinen
authors.affiliation: Department of Chemistry - Ångström Laboratory Physical Chemistry, Uppsala University, Box 523, 75120, Uppsala, Sweden.
authors.forename: Erik M J
authors.initials: EMJ
authors.lastname: Johansson
authors.affiliation: Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique de Fédérale de Lausanne, CH-1015, Lausanne, Switzerland.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Tress
authors.affiliation: Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland.
authors.forename: Anders
authors.initials: A
authors.lastname: Hagfeldt
authors.affiliation: Department of Chemistry - Ångström Laboratory Physical Chemistry, Uppsala University, Box 523, 75120, Uppsala, Sweden.
authors.forename: Gerrit
authors.initials: G
authors.lastname: Boschloo
keywords: carbon nanotubes; contacts; perovskite solar cells; stability