A polymer with a benzo[2,1-b;3,4-b']dithiophene moiety for photovoltaic applications.
The characterization of a benzo[2,1-b;3,4-b']dithiophene containing conjugated polymer (PBTT) is demonstrated, with regard to its photovoltaic performance. X-ray diffraction measurements reveal that the thermal treatment results in an increased crystallinity within the PBTT:[70]PCBM network and subsequent spatial rearrangement in the film. Upon stepwise annealing, the PBTT-based bulk-heterojunction solar cells show an overall conversion efficiency of 2.7% under 1 sun light illumination. The photovoltaic devices based on PBTT show a high efficiency, maintained over one month. All these aspects suggest that the use of self-organizable materials is an efficient approach for high-performance photovoltaic applications.
Liu
Miaoyin
M
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Rieger
Ralph
R
Li
Chen
C
Menges
Hansjörg
H
Kastler
Marcel
M
Baumgarten
Martin
M
Müllen
Klaus
K
D001562:Benzimidazoles / Q000737:chemistry*; D004563:Electrochemistry; D010777:Photochemistry / Q000295:instrumentation / Q000379:methods*; D011108:Polymers / Q000737:chemistry*; D012993:Solar Energy; D013499:Surface Properties; D013841:Thiazepines / Q000737:chemistry*; D013876:Thiophenes / Q000737:chemistry*; D014961:X-Ray Diffraction
D001562:Benzimidazoles; D011108:Polymers; D013841:Thiazepines; D013876:Thiophenes; C553050:poly(2,7-(benzo(2,1-b-3,4-b')dithiophene)-alt-2,2'-(3,3'-didodecyl-5,5'-bithiophenyl))