Facile synthesis and photovoltaic applications of a new alkylated bismethano fullerene as electron acceptor for high open circuit voltage solar cells

Derya Baran, Sule Erten-Ela*, Andreas Kratzer, Tayebeh Ameri, Christoph J. Brabec, Andreas Hirsch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

It is crucial to control the lowest unoccupied molecular orbital (LUMO) of electron accepting materials for producing efficient charge transfer in bulk heterojunction (BHJ) solar cells. Due to their high LUMO level, soluble bis-adducts of C60 are of high interest for improving the Voc in BHJ solar cells. In this work, we have developed a novel bis-4-propylpentyl[6,6]methanofullerene bis-adduct, NCBA, using a alkyl solubilizing group. The optoelectronic, electrochemical and photovoltaic properties of this bis-product are investigated. NCBA is successfully applied as the electron acceptor with poly(3-hexylthiophene) (P3HT) in a BHJ solar cell showing a high Voc of 0.73 V.

Original languageEnglish (US)
Pages (from-to)64724-64730
Number of pages7
JournalRSC Advances
Volume5
Issue number79
DOIs
StatePublished - Jan 1 2015

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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