Copper thiocyanate: An attractive hole transport/extraction layer for use in organic photovoltaic cells
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
We report the advantageous properties of the inorganic molecular semiconductor copper(I)
thiocyanate (CuSCN) for use as a hole collection/transport layer (HTL) in organic photovoltaic
(OPV) cells. CuSCN possesses desirable HTL energy levels [i.e., valence band at 5.35 eV,
0.35 eV deeper than poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS)], which
produces a 17% increase in power conversion efficiency (PCE) relative to PEDOT:PSS-based
devices. In addition, a two-fold increase in shunt resistance for the solar cells measured in dark conditions
is achieved. Ultimately, CuSCN enables polymer:fullerene based OPV cells to achieve
PCE > 8%. CuSCN continues to offer promise as a chemically stable and straightforward replacement
for the commonly used PEDOT:PSS.
thiocyanate (CuSCN) for use as a hole collection/transport layer (HTL) in organic photovoltaic
(OPV) cells. CuSCN possesses desirable HTL energy levels [i.e., valence band at 5.35 eV,
0.35 eV deeper than poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS)], which
produces a 17% increase in power conversion efficiency (PCE) relative to PEDOT:PSS-based
devices. In addition, a two-fold increase in shunt resistance for the solar cells measured in dark conditions
is achieved. Ultimately, CuSCN enables polymer:fullerene based OPV cells to achieve
PCE > 8%. CuSCN continues to offer promise as a chemically stable and straightforward replacement
for the commonly used PEDOT:PSS.
Date Issued
2015-07-06
Date Acceptance
2015-06-24
Citation
Applied Physics Letters, 2015, 107 (1)
ISSN
1077-3118
Publisher
American Institute of Physics (AIP)
Journal / Book Title
Applied Physics Letters
Volume
107
Issue
1
Copyright Statement
© 2015 AIP Publishing LLC.
Subjects
Science & Technology
Physical Sciences
Physics, Applied
Physics
POLYMER SOLAR-CELLS
LIGHT-EMITTING-DIODES
HIGH-EFFICIENCY
CONVERSION EFFICIENCY
QUANTUM EFFICIENCY
ROOM-TEMPERATURE
WORK FUNCTION
FILMS
CONDUCTIVITY
PERFORMANCE
Publication Status
Published
Article Number
013301