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Synthesis and Characterization of Benzo[1,2-b:4,5-b′]Dithiophene-Based Copolymer for Organic Photovoltaic Cells

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Novel benzo[1,2-b:4,5-b′]dithiophene-based polymer (P1) is designed and synthesized for panchromatic polymer solar cells. The synthesis, thermal stability, as well as the optical and photovoltaic properties of the polymer is systematically investigated. The polymer was thermally stable up to 310 °C, and readily soluble in common organic solvent. Conventional polymer solar cell with the configuration ITO/PEDOT:PSS/polymer:PC71BM/Ca/Al is fabricated. A polymer solar cell device prepared using P1 as the active layer exhibited a power conversion efficiency of 3.27% with an open circuit voltage of 0.76 V, a short-circuit current density of 9.03 mA/cm2, and a fill factor of 0.47 under AM 1.5G (100 mW/cm2) conditions.
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Keywords: Benzodithiophene-Based Copolymer; Panchromatic Polymer; Polymer Solar Cells

Document Type: Research Article

Affiliations: 1: Energy Materials Research Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Korea 2: Department of Chemistry, Kyungsung University, Busan 48434, Korea

Publication date: August 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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