title: Synthesis and photovoltaic properties of a new thiophene-cyclopentadiene-based conjugated polymer.
abstract: A new low-band gap polymer containing thiophene and cyclopentadiene, poly(5,2,2'-dioctyldithio-phenylcyclopentadiene) (PDTCP), has been synthesized via the FeCl3 oxidative polymerization. PDTCP showed a broad absorption band and a low energy band gap of 1.82 eV. The photoluminescence (PL) of PDTCP is completely quenched upon addition of PCBM indicative of efficient charge transfer. Bulk heterojunction organic photovoltaic cells (OPVs) fabricated from PDTCP as an electron donor showed an open-circuit voltage (V(OC)) of 0.50 V, a short-circuit current (J(SC)) of 1.24 mA/cm2, and the power conversion efficiency of up to 0.20% under AM 1.5 (100 mW/cm2).
authors.affiliation: Department of Chemistry, Kyonggi University, San 94-6, lui-dong, Yeongtong-gu, Suwan-si, Gyeongggi-do 443-760, Republic of Korea.
authors.forename: Eunhee
authors.initials: E
authors.lastname: Lim
authors.forename: Sungkoo
authors.initials: S
authors.lastname: Lee
authors.forename: Kyeong K
authors.initials: KK
authors.lastname: Lee