News Column

Study Results from National Taiwan University Broaden Understanding of Materials Science

June 3, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- New research on Materials Science is the subject of a report. According to news originating from Taipei, Taiwan, by VerticalNews correspondents, research stated, "In this work, a single electrospun polymer nanofiber was employed as an additional dielectric in organic field-effect transistors where the active channel was a layer of pentacene. A high field-effect mobility (>1.50 cm2(/)(V.s)) and a high ON/OFF current ratio (>10(6)) could be achieved by the use of such a nanofiber."

Our news journalists obtained a quote from the research from National Taiwan University, "Probing by electron microscopy, atomic force microscopy, and scattering techniques, we found that the geometry of the fiber is key to induce a pentacene morphology with large and oriented grains that facilitates the charge transport in pentacene layer along the fiber. The feasibility of nonvolatile memory based on this new type of transistor has been explored and the devices showed a fairly high memory window and reliable memory characteristics. In addition to pure polymers, the effects of composite nanofibers with dispersed [6,6]-phenyl-C-61-butyric acid methyl ester were also investigated, and the electrical properties and memory characteristics of the transistors were found to be further improved."

According to the news editors, the research concluded: "This study highlights the importance of dielectric geometry to pentacene morphology that is decisive for the performances of organic field-effect transistors."

For more information on this research see: Using a Single Electrospun Polymer Nanofiber to Enhance Carrier Mobility in Organic Field-Effect Transistors toward Nonvolatile Memory. ACS Applied Materials & Interfaces, 2014;6(8):5506-5515. ACS Applied Materials & Interfaces can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; ACS Applied Materials & Interfaces -

The news correspondents report that additional information may be obtained from P.Z. Jian, National Taiwan University, Dept. of Chem Engn, Taipei 10617, Taiwan. Additional authors for this research include Y.C. Chiu, H.S. Sun, T.Y. Chen, W.C. Chen and S.H. Tung.

Keywords for this news article include: Asia, Taipei, Taiwan, Materials Science

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Source: Journal of Technology

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