Super-flexible bis(trifluoromethanesulfonyl)-amide doped graphene transparent conductive electrodes for photo-stable perovskite solar cells

Jin Hyuck Heo, Dong Hee Shin, Dae Ho Song, Do Hun Kim, Sang Jin Lee, Sang Hyuk Im

Research output: Contribution to journalArticlepeer-review

86 Citations (Scopus)

Abstract

Super-flexible bis(trifluoromethanesulfonyl)-amide (TFSA)-doped graphene transparent conducting electrode (GR TCE)-based FAPbI3 - xBrx perovskite solar cells with 18.9% power conversion efficiency (PCE) for a rigid device and 18.3% for a flexible one are demonstrated because the TFSA-doped GR TCE reveals high conductivity and high transmittance. The unencapsulated TFSA-doped GR TCE-based cell maintained ∼95% of its initial PCE under a continuous light soaking of 1 Sun at 60 °C/30% relative humidity for 1000 h. In addition, the TFSA-doped GR TCE-based flexible perovskite solar cells show excellent bending stabilities, maintaining PCEs of ∼85, ∼75, and ∼35% of their original values after 5000 bending cycles, at R = 12, 8, and 4 mm, respectively.

Original languageEnglish
Pages (from-to)8251-8258
Number of pages8
JournalJournal of Materials Chemistry A
Volume6
Issue number18
DOIs
Publication statusPublished - 2018

Bibliographical note

Funding Information:
This study was supported by the Basic Science Research Program (No. 2014R1A5A1009799), the Technology Development Program To Solve Climate Changes (No. 2015M1A2A2055631), and the Global Frontier R&D Program of the Centre for Multi-scale Energy System (No. 2012M3A6A7054855) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning.

Publisher Copyright:
© 2018 The Royal Society of Chemistry.

ASJC Scopus subject areas

  • General Chemistry
  • Renewable Energy, Sustainability and the Environment
  • General Materials Science

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