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- W2356800904 abstract "Two low band gap alternating benzo[1,2- b: 4,5- b']dithiophene( BDT) based copolymers containing different side chains triisopropylethynyl( TIPS) and 2- ethylhexyloxy( OEH),namely,PBDT- TIPS- DTBT and PBDT- OEH- DTBT,were synthesized. Both copolymers showed the broad absorption spectra in a range of 300 ~ 730 nm,with the optical band gap( Eoptg) of c. a. 1. 7 eV. When the side chain of polymer backbone was changed from OEH to TIPS,the highest occupied molecular orbital(HOMO) energy level decreased from- 5. 16 eV to- 5. 35 eV. Bulk-heterojunction polymer solar cells( PSCs) were fabricated,based on PBDT- TIPS- DTBT as donor,PC61 BM as acceptor( D/A weight ratio 1∶1) and Ca /Al as negative electrode. Under the illumination of AM1. 5,100 mW·cm-2,the PSCs showed the best PCE of 2. 40%,with VOCof 0. 86 V,JSCof 4. 79 m A·cm-2,FF of 58. 37%." @default.
- W2356800904 created "2016-06-24" @default.
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- W2356800904 date "2015-01-01" @default.
- W2356800904 modified "2023-09-24" @default.
- W2356800904 title "Synthesis and Photovoltaic Properties of Benzo[1,2-b: 4,5-b']dithiophene-based Copolymers Containing Different Side Chains" @default.
- W2356800904 hasPublicationYear "2015" @default.
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