Columnar structure in bulk heterojunction in solution-processable three-layered p-i-n organic photovoltaic devices using tetrabenzoporphyrin precursor and silylmethyl[60]fullerene.
A new solution-processable fabrication protocol using a soluble tetrabenzoporphyrin (BP) precursor and bis(dimethylphenylsilylmethyl)[60]fullerene (SIMEF) created three-layered p-i-n photovoltaic devices, in which the i-layer possesses a well-defined bulk heterojunction structure in which columnar BP crystals grow vertically from the bottom p-layer. The device showed a power conversion efficiency of 5.2% (V(OC) = 0.75 V; J(SC) = 10.5 mA/cm(2); FF = 0.65).
Matsuo
Yutaka
Y
Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. matsuo@chem.s.u-tokyo.ac.jp
Sato
Yoshiharu
Y
Niinomi
Takaaki
T
Soga
Iwao
I
Tanaka
Hideyuki
H
Nakamura
Eiichi
E