What can we learn from model systems: Impact of polymer backbone structure on performance and stability of organic photovoltaics

Alexander V. Akkuratov, Ilya E. Kuznetsov, Ilya V. Martynov, Diana K. Sagdullina, Petr M. Kuznetsov, Laura Ciammaruchi, Fedor A. Prudnov, Mikhail V. Klyuev, Eugene A. Katz, Pavel A. Troshin

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We report the synthesis and extensive investigation of a broad family of novel (X-DADAD)n conjugated polymers with different X building blocks. It was shown that variation of X block in polymer backbone represents an efficient approach for tuning the polymer optical properties, frontier energy levels, charge transport characteristics as well as thin-film morphology and photovoltaic characteristics. Decent power conversion efficiencies (5.1–5.7%) were achieved for solar cells based on the polymers comprised of dibenzosilole (P2) and carbazole (P3) units. Polymers P2 and P3 showed impressive indoor and outdoor stability in solar cells while clearly outperforming common benchmark materials. In the view of the obtained results, the designed (X-DADAD)n polymers can be considered as promising semiconductor materials for stable organic photovoltaics.

Original languageEnglish
Article number121849
JournalPolymer
Volume183
DOIs
Publication statusPublished - 21 Nov 2019

Keywords

  • Benzothiadiazole
  • Conjugated polymers
  • Operational stability
  • Organic solar cells
  • Thiophene

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