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High Temperature‐Stable Perovskite Solar Cell Based on Low‐Cost Carbon Nanotube Hole Contact
Author(s) -
Aitola Kerttu,
Domanski Konrad,
CorreaBaena JuanPablo,
Sveinbjörnsson Kári,
Saliba Michael,
Abate Antonio,
Grätzel Michael,
Kauppinen Esko,
Johansson Erik M. J.,
Tress Wolfgang,
Hagfeldt Anders,
Boschloo Gerrit
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.201606398
Subject(s) - materials science , carbon nanotube , perovskite (structure) , electrode , energy conversion efficiency , solar cell , perovskite solar cell , nanotube , optoelectronics , nanotechnology , chemical engineering , chemistry , engineering
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 N 2 atmosphere. 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.