start-ver=1.4 cd-journal=joma no-vol=85 cd-vols= no-issue=9 article-no= start-page=957 end-page=961 dt-received= dt-revised= dt-accepted= dt-pub-year=2012 dt-pub=201209 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Electroconductive ƒÎ-Junction Au Nanoparticles en-subtitle= kn-subtitle= en-abstract= kn-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 2 cm2 V?1 s?1, the value of which is comparable to OFET devices having vacuum-deposited Au electrodes. en-copyright= kn-copyright= en-aut-name=KaneharaMasayuki en-aut-sei=Kanehara en-aut-mei=Masayuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakeyaJun en-aut-sei=Takeya en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=UemuraTakafumi en-aut-sei=Uemura en-aut-mei=Takafumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MurataHideyuki en-aut-sei=Murata en-aut-mei=Hideyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TakimiyaKazuo en-aut-sei=Takimiya en-aut-mei=Kazuo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=SekineHikaru en-aut-sei=Sekine en-aut-mei=Hikaru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TeranishiToshiharu en-aut-sei=Teranishi en-aut-mei=Toshiharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=Research Core for Interdisciplinary Sciences, Okayama University affil-num=2 en-affil= kn-affil=Department of Chemistry, Graduate School of Science, Osaka University affil-num=3 en-affil= kn-affil=Department of Chemistry, Graduate School of Science, Osaka University affil-num=4 en-affil= kn-affil=School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST) affil-num=5 en-affil= kn-affil=Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University affil-num=6 en-affil= kn-affil=Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba affil-num=7 en-affil= kn-affil=Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba END