Electroconductive π-junction Au nanoparticles

Masayuki Kanehara, Jun Takeya, Takafumi Uemura, Hideyuki Murata, Kazuo Takimiya, Hikaru Sekine, Toshiharu Teranishi

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The fabrication of printed electronic circuits using solution-based electroconductive materials at low temperature is essential for the realization of modern printed electronics including transistors, photovoltaic cells, and light-emitting devices. Despite the progress in the field of semiconductor solution materials, reliable electrodes are always fabricated by a vacuum deposition process resulting in only partially solution-processed devices. In this paper, we show that planar phthalocyanine-conjugated Au nanoparticles (NPs) significantly improve the interparticle-carrier-transport properties. The deposition of a solution of the Au NPs under ambient conditions results in an electroconductive metallic thin film without further post-treatment. Maximum conductivity reaches >6600 S cm -1 and the conductivity remains unchanged for at least 1 year under ambient conditions. The all-solution- processed organic field-effect transistor (OFET) fabricated under ambient conditions exhibits mobility values as high as 2cm 2 V -1 s -1, the value of which is comparable to OFET devices having vacuum-deposited Au electrodes.

Original languageEnglish
Pages (from-to)957-961
Number of pages5
JournalBulletin of the Chemical Society of Japan
Volume85
Issue number9
DOIs
Publication statusPublished - 2012
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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