title: Synthesis and Photovoltaic Properties of a Thienylenevinylene and Diketopyrrolopyrrole Copolymer with High Mobility.
abstract: A novel donor-acceptor-type polymer with a low band-gap that alternates electron-rich thienylenevinylene groups with electron-deficient diketopyrrolopyrrole (DPP) units (PETVTDPP) has been synthesized by Pd-catalyzed Stille cross-coupling polymerization. The polymer shows a broad absorption band of wavelengths that range from 330 to 900 nm, and a low band-gap value of 1.43 eV. The field-effect mobility of an organic thin-film transistor based on this polymer is 0.05 cm(2 ) · Vs(-1) . Bulk-heterojunction solar cells using a mixture of PETVTDPP and PC[71] BM for the active layer show a power conversion efficiency (PCE) of 1.94% under simulated AM 1.5 G solar irradiation at 100 mW · cm(-2) .
authors.affiliation: Heeger Center for Advanced Materials (HCAM), School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-Dong, Buk-Gu, Gwangju 500-712, Republic of Korea.|Department of Material Science and Engineering, Center for Advanced Molecular Photovoltaics (CAMP), Stanford University, Stanford, CA 94305, USA.
authors.forename: Bogyu
authors.initials: B
authors.lastname: Lim
authors.affiliation: Heeger Center for Advanced Materials (HCAM), School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-Dong, Buk-Gu, Gwangju 500-712, Republic of Korea.
authors.forename: Jun-Seok
authors.initials: JS
authors.lastname: Yeo
authors.affiliation: Heeger Center for Advanced Materials (HCAM), School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-Dong, Buk-Gu, Gwangju 500-712, Republic of Korea.
authors.forename: Dongyoon
authors.initials: D
authors.lastname: Khim
authors.affiliation: Heeger Center for Advanced Materials (HCAM), School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 1 Oryong-Dong, Buk-Gu, Gwangju 500-712, Republic of Korea. kimdy@gist.ac.kr.
authors.forename: Dong-Yu
authors.initials: DY
authors.lastname: Kim
mesh_terms: D007659:Ketones / Q000737:chemistry*; D008027:Light; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D012993:Solar Energy
chemical_list: D007659:Ketones; D011108:Polymers; D011758:Pyrroles; C000604894:diketopyrrolopyrrole dye