Bis(pyrrolidino)[60]fullerenes: promising photostable fullerene-based acceptors suppressing light-induced absorber degradation pathways

Alexander V. Mumyatov, Fedor A. Prudnov, Diana K. Sagdullina, Ilya V. Martynov, Liana N. Inasaridze, Alexander V. Chernyak, Andrey V. Maskaev, Ilya E. Kuznetsov, Alexander V. Akkuratov, Pavel A. Troshin

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Two novel highly soluble bis(pyrrolidino)[60]fullerenes were synthesized and investigated as promising electron acceptor materials for organic solar cells. Reduced electron affinity of bis(pyrrolidino)[60]fullerenes as compared to the reference [60]PCBM enabled a spectacular increase in open-circuit voltage of organic bulk heterojunction solar cells by ~200 mV while using model P3HT and PCDTBT electron donor polymers. In addition to the improved optoelectronic properties, bis(pyrrolidino)[60]fullerenes were found to be resistant towards the photochemical cross-linking in contrast to conventional [60]PCBM and conjugated polymers. Most importantly, the designed fullerene derivatives efficiently suppressed photooxidation of conjugated polymers as revealed by ESR spectroscopy, which features a tremendous potential of applying these materials in the development of efficient and durable organic photovoltaics.

Original languageEnglish
Article number116632
JournalSynthetic Metals
Volume271
DOIs
Publication statusPublished - Jan 2021

Keywords

  • Antioxidants
  • Bis(pyrrolidino)[60]fullerenes
  • N-type semiconductors
  • Organic solar cells
  • Protecting additives

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