TY - JOUR
T1 - Fused dithienogermolodithiophene low band gap polymers for high-performance organic solar cells without processing additives
AU - Zhong, Hongliang
AU - Li, Zhe
AU - Deledalle, Florent
AU - Fregoso, Elisa Collado
AU - Shahid, Munazza
AU - Fei, Zhuping
AU - Nielsen, Christian B.
AU - Yaacobi-Gross, Nir
AU - Rossbauer, Stephan
AU - Anthopoulos, Thomas D.
AU - Durrant, James R.
AU - Heeney, Martin
N1 - Generated from Scopus record by KAUST IRTS on 2023-02-14
PY - 2013/2/13
Y1 - 2013/2/13
N2 - We report the synthesis of a novel ladder-type fused ring donor, dithienogermolodithiophene, in which two thieno[3,2-b]thiophene units are held coplanar by a bridging dialkyl germanium. Polymerization of this extended monomer with N-octylthienopyrrolodione by Stille polycondensation afforded a polymer, pDTTG-TPD, with an optical band gap of 1.75 eV combined with a high ionization potential. Bulk heterojunction solar cells based upon pDTTG-TPD:PC71BM blends afforded efficiencies up to 7.2% without the need for thermal annealing or processing additives. © 2013 American Chemical Society.
AB - We report the synthesis of a novel ladder-type fused ring donor, dithienogermolodithiophene, in which two thieno[3,2-b]thiophene units are held coplanar by a bridging dialkyl germanium. Polymerization of this extended monomer with N-octylthienopyrrolodione by Stille polycondensation afforded a polymer, pDTTG-TPD, with an optical band gap of 1.75 eV combined with a high ionization potential. Bulk heterojunction solar cells based upon pDTTG-TPD:PC71BM blends afforded efficiencies up to 7.2% without the need for thermal annealing or processing additives. © 2013 American Chemical Society.
UR - https://pubs.acs.org/doi/10.1021/ja311700u
UR - http://www.scopus.com/inward/record.url?scp=84873690330&partnerID=8YFLogxK
U2 - 10.1021/ja311700u
DO - 10.1021/ja311700u
M3 - Article
C2 - 23350611
SN - 0002-7863
VL - 135
SP - 2040
EP - 2043
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 6
ER -