Engineering high-performance and air-stable PBTZT-stat-BDTT-8:PC61BM/PC71BM organic solar cells

Il Jeon, Ryohei Sakai, Seungju Seo, Graham E. Morse, Hiroshi Ueno, Takafumi Nakagawa, Yang Qian, Shigeo Maruyama, Yutaka Matsuo

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

High-performance air-stable PBTZT-stat-BDTT-8 organic solar cells were fabricated using mixed C60/C70 fullerene acceptors. Normal-architecture devices using PBTZT-stat-BDTT-8 with PC71BM produced a power conversion efficiency (PCE) of 9.38%. An inverted-architecture, which possesses higher stability, was fabricated using a more economical PC61BM and PC71BM mixture with solution-processed PEDOT:PSS on top and produced a PCE of 8.15%. Exploiting the viscous nature of PBTZT-stat-BDTT-8, the slow evaporation effect was utilised to achieve an even higher efficiency of 8.73%. A stability test was conducted under operating conditions and our devices showed remarkably higher stability compared with PTB7-based devices.

Original languageEnglish
Pages (from-to)5746-5751
Number of pages6
JournalJournal of Materials Chemistry A
Volume6
Issue number14
DOIs
Publication statusPublished - 2018 Apr 14
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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