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New Findings from University of Ulsan Describe Advances in Optoelectronics (Semicrystalline D-A Copolymers with Different Chain Curvature for...

August 20, 2014



New Findings from University of Ulsan Describe Advances in Optoelectronics (Semicrystalline D-A Copolymers with Different Chain Curvature for Applications in Polymer Optoelectronic Devices)

By a News Reporter-Staff News Editor at Electronics Newsweekly -- Data detailed on Optoelectronics have been presented. According to news reporting from Ulsan, South Korea, by VerticalNews journalists, research stated, "Thiophene- and thienothiophene-based donor-acceptor (D-A) type semicrystalline copolymers with different backbone curvatures, PTBT14 and PTTBT14, were designed and synthesized. Both the polymers exhibit a nearly planar structure via noncovalent S center dot center dot center dot O and C-H center dot center dot center dot N attractive interactions, etc., in the polymer chain."

The news correspondents obtained a quote from the research from the University of Ulsan, "PTTBT14 is linear, whereas PTBT14 is curved owing to similar to 160 degrees bond angle of the thiophene linkage. PTTBT14 showed the higher degree of interchain ordering with edge-on orientation, resulting in efficient charge transport (0.26 cm(2) V-1 s(-1) for PTTBT14 compared to 0.02 cm(2) V-1 s(-1) for PTBT14) in PFETs with remarkable morphological stability and no deterioration in device properties at temperatures up to 250 degrees C. On the other hand, the curved shape of PTBT14 attributed to its improved photovoltaic properties with a power conversion efficiency of 5.56%."

According to the news reporters, the research concluded: "The linear PTTBT14 showed much stronger self-interactions with negligible morphological changes and little miscibility with PC61BM, showing the poor photovoltaic characteristics."

For more information on this research see: Semicrystalline D-A Copolymers with Different Chain Curvature for Applications in Polymer Optoelectronic Devices. Macromolecules, 2014;47(5):1604-1612. Macromolecules can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Macromolecules - www.pubs.acs.org/journal/mamobx)

Our news journalists report that additional information may be obtained by contacting W. Lee, University of Ulsan, EHSRC, Ulsan 680749, South Korea. Additional authors for this research include G.H. Kim, S.J. Ko, S. Yum, S. Hwang, S. Cho, Y.H. Shin, J.Y. Kim and H.Y. Woo.

Keywords for this news article include: Asia, Ulsan, South Korea, Photovoltaic, Optoelectronics

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Electronics Newsweekly


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