Tuning the energy level offset between donor and acceptor with ferroelectric dipole layers for increased efficiency in Bilayer organic photovoltaic cells

Bin Yang, Yongbo Yuan, Pankaj Sharma, Shashi Poddar, Rafal Korlacki, Stephen Ducharme, Alexei Gruverman, Ravi Saraf, Jinsong Huang

Research output: Contribution to journalArticle

100 Scopus citations

Abstract

Ultrathin ferroelectric polyvinylidene fluoride (70%)-tetrafluoroethylene (30%) copolymer film is inserted between the poly3(hexylthiophene) (P3HT) donor and [6,6]-phenyl-C61-butyric acid methylester (PCBM) acceptor layers as the dipole layer to tune the relative energy levels, which can potentially maximize the open circuit voltage of bilayer organic solar cells. In this work, the power conversion efficiency of P3HT/PCBM bilayer solar cells is demonstrated to be doubled with the inserted dipoles.

Original languageEnglish (US)
Pages (from-to)1455-1460
Number of pages6
JournalAdvanced Materials
Volume24
Issue number11
DOIs
StatePublished - Mar 15 2012

Keywords

  • dipole
  • ferroelectrics
  • open circuit voltage
  • organic photovoltaics

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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