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Author

Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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A new dithienopyridine-based polymer for an organic electronics

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Title
A new dithienopyridine-based polymer for an organic electronics
Author
Sun, ChengSong, SeyeongSong, Hyeng GunPark, So MinKim, Jin YoungKim, Yun-HiKwon, Soon-Ki
Keywords
Dithienopyridine-Based Copolymer; Mobility; Organic Photovoltaic (OPV); Organic Thin Film Transistor (OTFT); Power Conversion Efficiency
Issue Date
201708
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.17, no.8, pp.5792 - 5795
Abstract
Convergence Technology (RIGET), Gyeongsang National University, Jin-ju, 660-701, Korea Republic of Korea A new dithienopyridine-based copolymer (PDT-TBT) was designed and synthesized. The copolymer showed good solubility in chloroform, chlorobenzene, and dichlorobenzene. The thermogravimetric analysis curve showed that the copolymer had good thermal stability with weight loss of less than 5% at 341 °C. The UV absorption maximum of the polymer appeared at 550 nm in solution and 600 nm in the film. The HOMO and LUMO of the copolymer were -5.50 eV and -3.63 eV, respectively. The copolymer exhibited the best performance when the PC61BM ratio was 1:2 (w/w %), with a JSC of 3.56 mA/cm2, a VOC of 0.45 V, an FF of 0.27%, and a PCE of 0.43%. A thin film transistor with PDT-TBT as the active layer showed mobility of 5.02×10-3 cm2/Vs, an on/off ratio of 1.19×105 and a threshold voltage of -22.75 V.
URI
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DOI
http://dx.doi.org/10.1166/jnn.2017.14180
ISSN
1533-4880
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