title: Columnar structure in bulk heterojunction in solution-processable three-layered p-i-n organic photovoltaic devices using tetrabenzoporphyrin precursor and silylmethyl[60]fullerene.
abstract: 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).
authors.affiliation: 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
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Matsuo
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Sato
authors.forename: Takaaki
authors.initials: T
authors.lastname: Niinomi
authors.forename: Iwao
authors.initials: I
authors.lastname: Soga
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Tanaka
authors.forename: Eiichi
authors.initials: E
authors.lastname: Nakamura