岡山大学金原先生との共同研究による室温塗布できる金微粒子配線の論文が Bulletin of the Chemical Society of Japan オンライン版に掲載されました。
- Electroconductive π-Junction Au Nanoparticles
M. Kanehara, J. Takeya, T. Uemura, H. Murata, K. Takimiya, H. Sekine, and T. Teranishi
Bull. Chem. Soc. Jpn. 85, 957-961 (2012).
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.