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Author Treat, Neil D. ♦ Stingelin, Natalie ♦ Yaacobi-Gross, Nir ♦ Faber, Hendrik ♦ Perumal, Ajay K. ♦ Bradley, Donal D. C. ♦ Anthopoulos, Thomas D.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ COPPER ♦ EFFICIENCY ♦ ENERGY LEVELS ♦ EV RANGE ♦ FULLERENES ♦ HOLES ♦ LAYERS ♦ PHOTOVOLTAIC EFFECT ♦ POLYMERS ♦ SEMICONDUCTOR MATERIALS ♦ SOLAR CELLS ♦ THIOCYANATES ♦ VALENCE
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.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-07-06
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 1


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