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Researchers from University of Tokyo Detail New Studies and Findings in the Area of Polymer Physics

June 24, 2014

By a News Reporter-Staff News Editor at Physics Week -- Current study results on Polymer Physics have been published. According to news reporting from Tokyo, Japan, by VerticalNews journalists, research stated, "Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is the most popular anode buffer coated on indium tin oxide. It is thought to improve the inorganic-organic contact, but little is known about its role in organic-organic contact."

The news correspondents obtained a quote from the research from the University of Tokyo, "This study addresses the latter issue by examining how the PEDOT:PSS layer affects the crystallization process of the neighboring layer composed of p-type organic semiconductors in an organic photovoltaic device. Low landing voltage scanning electron microscopic analysis of crystals and aggregates of two donor compounds, tetrabenzoporphyrin (BP) and poly(3-hexylthiophene) (P3HT), showed that PEDOT:PSS effectively nucleates the crystallization or aggregation of the donor material on its surface to form a uniformly thick film of polycrystalline BP or aggregated P3HT molecules. By contrast, a graphitic surface cannot induce structural order of the donor molecules on it."

According to the news reporters, the research concluded: "This result implies that pinning of the donor molecules to the acidic PEDOT:PSS surface promotes the heterogeneous nucleation at the organic-organic interface."

For more information on this research see: Formation of a Polycrystalline Film of Donor Material on PEDOT: PSS Buffer Induced by Crystal Nucleation. Journal of Polymer Science Part B-Polymer Physics, 2014;52(12):833-841. Journal of Polymer Science Part B-Polymer Physics can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA.

Our news journalists report that additional information may be obtained by contacting K. Harano, University of Tokyo, Dept. of Chem, Bunkyo Ku, Tokyo 1130033, Japan. Additional authors for this research include S. Okada, S. Furukawa, H. Tanaka and E. Nakamura.

Keywords for this news article include: Asia, Tokyo, Japan, Polymer Physics

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Source: Physics Week

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