title: Synthesis, Characterization and Optoelectronic Properties of Benzodithiophene Based Copolymers for Application in Solar Cells.
abstract: This paper reports on the synthesis and characterization of novel donor-acceptor (D-A) conjugated polymers containing triisopropylsilylethyny(TIPS)benzo[1,2-b:4,5-b']dithiophene-diketopyrrolopyrrole (P1 and P2) through Stille co-polymerization method. Thermal stability, optical and electrochemical properties of these polymers were determined. Optical band gaps of the polymers as calculated from their film onset absorption edges were found to be 1.46 and 1.44 eV, respectively. Electrochemical studies revealed HOMO and LUMO energy levels to be -5.22, -5.60 eV, and -3.76, -4.16 eV, respectively. The polymers were thermally stable up to 400-440 °C. Optoelectronic studies indicated that these materials to be promising candidates in solar cell applications.
authors.affiliation: Energy Materials Research Center, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon, 305-600, Republic of Korea. cdbathula9@gmail.com.|Department of Chemistry, Research Institute for Natural Sciences and Institute of Nanoscience and Technology, Hanyang University, Seoul, 133-791, Republic of Korea. cdbathula9@gmail.com.
authors.forename: Chinna
authors.initials: C
authors.lastname: Bathula
authors.affiliation: Energy Materials Research Center, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon, 305-600, Republic of Korea.|Nanomaterials Science and Engineering Major, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, South Korea.
authors.forename: Sachin
authors.initials: S
authors.lastname: Badgujar
authors.affiliation: Department of Chemistry, Karnatak University, Dharwad, -580 003, India.
authors.forename: Ningaraddi S
authors.initials: NS
authors.lastname: Belavagi
authors.affiliation: Energy Materials Research Center, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon, 305-600, Republic of Korea.|Nanomaterials Science and Engineering Major, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, South Korea.
authors.forename: Sang Kyu
authors.initials: SK
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Research Institute for Natural Sciences and Institute of Nanoscience and Technology, Hanyang University, Seoul, 133-791, Republic of Korea.
authors.forename: Youngjong
authors.initials: Y
authors.lastname: Kang
authors.affiliation: Department of Chemistry, Karnatak University, Dharwad, -580 003, India.
authors.forename: Imitiyaz Ahmed M
authors.initials: IA
authors.lastname: Khazi
keywords: Benzodithiophene; Conjugate polymers; Diketopyrrolopyrole; Optoelectronic stidies; Stille reaction