title: Naphthodithiophenes: emerging building blocks for organic electronics.
abstract: Linear-fused naphthodithiophenes (NDTs) are emerging building blocks in the development of new semiconducting small molecules, oligomers, and polymers. The promising nature of NDT-based materials as organic semiconductors has been demonstrated by superior device characteristics in organic field-effect transistors (OFETs) and organic photovoltaics (OPVs) in the last few years. In particular, it is quite impressive that a power conversion efficiency as high as 8.2% has been achieved for a single-junction OPV cell consisting of NDT-based semiconducting polymers and a fullerene derivative in such a short period of time. Here, we provide an overview of recent synthetic evolutions in NDT chemistry and progress in NDT-based materials, especially conjugated oligomers and polymers and their applications to OFETs and OPVs.
authors.affiliation: Emergent Molecular Function Research Group, RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, 351-0198, Japan; Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527, Japan. takimiya@riken.jp.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Takimiya
authors.forename: Itaru
authors.initials: I
authors.lastname: Osaka
keywords: molecular electronics; naphthodithiophenes; organic field-effect transistors; organic photovoltaics; semiconductors