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    미래를 창조하는 포스텍 화학공학과

    A Strategy to Design a Donor？π？Acceptor Polymeric Hole Conductor for an Efficient Perovskite Solar Cell

    Title of paper
    A Strategy to Design a Donor？π？Acceptor Polymeric Hole Conductor for an Efficient Perovskite Solar Cell
    Author
    [박태호교수 연구실]
    Publication in journal
    Advanced Energy Materials 5(14), p1500471 (July 2015)
    Publication date
    20150722
     
    [Abstract]
     
    A strategy for developing a novel donor–π–acceptor conducting polymeric hole transport material (TTB–TTQ) based on thiophene and benzothiadiazole as an alternative to spiro-MeOTAD is reported. The resulting polymer is highly soluble in many organic solvents and exhibits excellent film formability. The addition of lithium bis(trifluoromethanesulfonyl) imide salt and tert-butylpyridine to TTB–TTQ results in a rough film surface with a fibril structure and improved charge transport. A perovskite solar cell with the highest power conversion efficiency (η) yet achieved in such cells, 14.1%, which is 22.6% greater than that of a device employing a spiro-MeOTAD is demonstrated. This strategy provides a novel approach to developing solar cell materials for efficient perovskite solar cells.
     
    DOI: 10.1002/aenm.201500471