Synthesis of n-type A-A Conjugated Polymers and Research of Organic Solar Cell Device Properties.
발표자
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초록
내용
Conducting polymers are in the limelight as semiconductor materials that can replace inorganic materials due to their flexibility and low cost. Although many research groups have explored n-type conjugated polymers based on acceptor-acceptor (A-A) design motif, synthesis of A-A type polymers is tricky due to their electron-deficiency character leading to low reactivity. In this study, we synthesized two A-A type polymers (IDIC-BTI & IDSIC-BTI) by Stille coupling of a distannylated electron-deficient bithiophene imide (BTI-Tin) monomer and two different dibrominated IDT (indacenodithiophene) derivatives. The optical and electronic properties were studied in detail by UV-Vis spectroscopy, Cyclic Voltammetry (CV), and Grazing-Incidence Wide-Angle X-ray Scattering (GIWAXS) analysis. We also fabricated Inverted organic solar cells and investigated indoor device performances. The relationship between molecular structures, physical properties and device characteristics will be presented.