title: A highly crystalline low band-gap polymer consisting of perylene and diketopyrrolopyrrole for organic photovoltaic cells.
abstract: A new, low band-gap donor-acceptor-type conjugated polymer, PDPP-PER, comprising 3,9-perylene (PER) and diketopyrrolo[3,4-c]pyrrole (DPP) was synthesized. The crystallinity of the synthesized polymer film significantly improved with thermal annealing to 150 °C. The PCE of the PDPP-PER device reached 6.35% with a high open-circuit voltage of 0.79 V.
authors.affiliation: Department of Chemistry, and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Republic of Korea.
authors.forename: Ji-Hoon
authors.initials: JH
authors.lastname: Kim
authors.forename: Chang Eun
authors.initials: CE
authors.lastname: Song
authors.forename: In-Nam
authors.initials: IN
authors.lastname: Kang
authors.forename: Won Suk
authors.initials: WS
authors.lastname: Shin
authors.forename: Do-Hoon
authors.initials: DH
authors.lastname: Hwang