Crystalline conjugated polymers for organic electronics

Itaru Osaka, Kazuo Takimiya

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


We reported the characterization of a series of semiconducting polymers based on naphthodithiophenes (NDTs) and naphthobisthiadiazole (NTz). Four different isomeric NDTs are selectively synthesized using the similar synthetic protocol. The isomeric NDTs provide quite distinct electronic structures and crystallinity of the corresponding polymers and thus the device performances. Polymers with one of the NDT isomers, NDT3, showed high hole mobilities in excess of 0.5 cm2/Vs. On the other hand, an NTz-based polymer exhibited high hole mobility of >0.5 cm2/Vs in OFETs and power conversion efficiencies of >7% in OPVs. These high performances of the present polymers are found to originate in their highly crystalline structures in the thin films.

Original languageEnglish
Article number012016
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 2014
EventTsukuba International Conference on Materials Science, TICMS 2013 - Tsukuba, Japan
Duration: 2013 Aug 282013 Sept 6


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