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Low bandgap polymers synthesized by FeCl(3) oxidative polymerization

T. Q. Cai ; Y. Zhou ; Ergang Wang (Institutionen för kemi- och bioteknik, Polymerteknologi) ; Stefan Hellström (Institutionen för kemi- och bioteknik, Polymerteknologi) ; F. L. Zhang ; S. A. Xu ; O. Inganas ; Mats R. Andersson (Institutionen för kemi- och bioteknik, Polymerteknologi)
Solar Energy Materials and Solar Cells (0927-0248). Vol. 94 (2010), 7, p. 1275-1281.
[Artikel, refereegranskad vetenskaplig]

Four low bandgap polymers, combining an alkyl thiophene donor with benzo[c][1,2,5]thiadiazole, 2,3-diphenylquinoxaline, 2,3-diphenylthieno[3,4-b]pyrazine and 6,7-diphenyl-[1,2,5]thiadiazolo[3,4-g] quinoxaline acceptors in a donor-acceptor-donor architecture, were synthesized via FeCl3 oxidative polymerization. The molecular weights of the polymers were improved by introducing o-dichlor-obenzene (ODCB) as the reaction solvent instead of the commonly used solvent, chloroform. The photophysical, electrochemical and photovoltaic properties of the resulting polymers were investigated and compared. The optical bandgaps of the polymers vary between 1.0 and 1.9 eV, which is promising for solar cells. The devices spin-coated from an ODCB solution of P1DB:[70]PCBM showed a power conversion efficiency of 1.08% with an open-circuit voltage of 0.91 V and a short-circuit current density of 3.36 mA cm(-2) under irradiation from an AM1.5G solar simulator (100 mW cm(-2)). (C) 2010 Elsevier B.V. All rights reserved.

Nyckelord: Polymer solar cells, Bulk heterojunction, FeCl3 oxidative, polymerization, Low bandgap polymers, Benzo[c][1,2,5]thiadiazole, heterojunction photovoltaic cells, solar-cells, gap polymer, conjugated, polymers, performance, efficiency, thiophene, benzothiadiazole, units, thienopyrazine



Denna post skapades 2010-06-18. Senast ändrad 2014-09-02.
CPL Pubid: 122962

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Polymerteknologi (2005-2014)

Ämnesområden

Kemi

Chalmers infrastruktur