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Synthesis of a low-bandgap donor-acceptor copolymer and its optoelectronic applications
윤희준,황문찬,안은수,박성종,이지상,유센칭,김윤희 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Conjugated polymers have attracted much attention because their processability and physicochemical properties can be easily tuned. Together with other potential advantages such as their low cost, lightweight and flexibility, such chemically tunable characteristics mean that conjugated polymers are the most desirable materials for many opto-electronic applications. We demonstrate in this study various electronic and optoelectronic applications. A new low-bandgap D-A organic semiconductor, Material designed and synthesized by bromination, lithiation, stile coupling reaction. The structure of obtained material was confirmed by NMR and mass spectrometry (MS), and the physical properties were characterized by UV-vis spectroscopy, cyclovoltammetry (CV), differencial scanning calorimetry (DSC), and thermogravimetric analysis (TGA). A new low-bandgap D-A organic semiconductor showed an unpredicted low LUMO level, and high performance photodetector.
Synthesis and application of Donor and Aceeptor Groups in Polymer Solar Cells
하연희,황문찬,김유진,이준화,박찬언,김윤희 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
we report the synthesis and characterization of a novel copolymer. This synthesized polymer showed good solubility in common organic solvents such as ODCB, CB and CF, sufficient thermal stability, moderate UV-vis absorption wavelength and energy levels. Solution-processed organic solar cells were fabricated using PBDT-KTBDT as an electron donor and PC71BM as an electron acceptor, and a power conversion efficiency of 1.50% was obtained. Our results reveal that the copolymer with donordonor composition is a viable candidate as a semiconductor in OPVs, and it is possible to further improve solar cells through more extensive research on these two BDT units-based materials.