Copper thiocyanate: An attractive hole transport/extraction layer for use in organic photovoltaic cells | Zendy

Neil D. Treat | Zendy; Nir YaacobiGross | Zendy; Hendrik Faber | Zendy; Ajay Perumal | Zendy; Donal D. C. Bradley | Zendy; Natalie Stingelin | Zendy; Thomas D. Anthopoulos | Zendy

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Copper thiocyanate: An attractive hole transport/extraction layer for use in organic photovoltaic cells

Author(s) -

Neil D. Treat,

Nir YaacobiGross,

Hendrik Faber,

Ajay Perumal,

Donal D. C. Bradley,

Natalie Stingelin,

Thomas D. Anthopoulos

Publication year - 2015

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4926408

Subject(s) - pedot:pss , thiocyanate , materials science , organic solar cell , energy conversion efficiency , organic semiconductor , photovoltaic system , copper , conductive polymer , polymer , optoelectronics , semiconductor , chemical engineering , nanotechnology , layer (electronics) , chemistry , inorganic chemistry , composite material , metallurgy , engineering , ecology , biology

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.

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