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

doi:10.1002/adma.201104509

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

Adv Mater. 2012 Mar 15;24(11):1455-60. doi: 10.1002/adma.201104509. Epub 2012 Feb 13.

Authors

Bin Yang¹, Yongbo Yuan, Pankaj Sharma, Shashi Poddar, Rafal Korlacki, Stephen Ducharme, Alexei Gruverman, Ravi Saraf, Jinsong Huang

Affiliation

¹ Department of Mechanical and Materials Engineering and Nebraska, Center for Materials and Nanoscience, University of Nebraska-Lincoln, 68588-0656, USA.

PMID: 22328442
DOI: 10.1002/adma.201104509

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.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Bone Development*
Electric Power Supplies*
Electricity
Materials Testing
Membranes, Artificial*
Organic Chemicals / chemistry*
Polymers / chemistry
Semiconductors
Thermodynamics*

Substances

Membranes, Artificial
Organic Chemicals
Polymers