High Temperature-Stable Perovskite Solar Cell Based on Low-Cost Carbon Nanotube Hole Contact

Kerttu Aitola, Konrad Domanski, Juan Pablo Correa-Baena, Kari Sveinbjornsson, Michael Saliba, Antonio Abate, Michael Graetzel, Esko Kauppinen, Erik M J Johansson, Wolfgang Tress, Anders Hagfeldt, Gerrit Boschloo

Research output: Contribution to journalArticleScientificpeer-review

152 Citations (Scopus)

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 degrees 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.

Original languageEnglish
Article number1606398
Pages (from-to)1-5
Number of pages5
JournalAdvanced Materials
Volume29
Issue number17
DOIs
Publication statusPublished - 3 May 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • CONDUCTOR-FREE
  • PERFORMANCE
  • DEGRADATION
  • EXTRACTION
  • ELECTRODE
  • NETWORKS

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