Photovoltaic limitations of BODIPY:fullerene based bulk heterojunction solar cells

Derya Baran, Sachetan Tuladhar, Solon P. Economopoulos, Marios Neophytou, Achilleas Savva, Grigorios Itskos, Andreas Othonos, Donal D.C. Bradley, Christoph J. Brabec, Jenny Nelson, Stelios A. Choulis

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The photovoltaic performance of blends of a series of 4,4′-Difluoro-4-bora-3a,4a-diaza-s-indacenes)-based (BODIPY) conjugated polymers donors with fullerene electron acceptors is investigated. Despite the high Voc values observed, solar cell device yields relatively low power conversion efficiencies. Our study takes into account the materials’ structure-property relationship, light harvesting capabilities, charge transport, collection properties and morphological characteristics to elucidate factors affecting the photovoltaic performance in this class of polymers. We show that elimination of low molecular weight species and suitable electrodes for hole collection can be used to overcome some of the observed limitations on photovoltaic performance.

Original languageEnglish (US)
Pages (from-to)25-30
Number of pages6
JournalSynthetic Metals
Volume226
DOIs
StatePublished - Apr 1 2017
Externally publishedYes

Keywords

  • BODIPY polymer donors
  • Charge transport
  • Collection
  • Fractionation process
  • Morphology
  • Organic solar cells

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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