Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Ahmed Najari"'
Publikováno v:
Journal of Materials Chemistry C. 5:1858-1879
Polymer solar cells (PSCs) with a bulk heterojunction (BHJ) structure, i.e. a blend of a p-type conjugated polymer with an n-type semiconductor acceptor, have made rapid progress over the past decade. In comparison with inorganic semiconductor solar
Publikováno v:
Journal of Materials Chemistry A. 5:6638-6647
Recent developments on regio-regular and random terpolymers based on a donor/acceptor architecture (D1–A–D2–A or D–A1–D–A2) have shown promising results for their use as donor materials in bulk heterojunction (BHJ) polymer solar cells. Ne
Publikováno v:
Polymer Chemistry. 6:278-282
Many diketopyrrolopyrrole-based (DPP) polymers have shown remarkable transport properties and to fabricate cost efficient materials, the new direct (hetero)arylation polymerization (DHAP) could become a valuable tool. Although the DHAP offers great p
Publikováno v:
Synthetic Metals. 182:9-12
A new thieno[3,4-c]pyrrole-4,6-dione (TPD) based copolymer (PBDTTPD(K)) was prepared. A ketone group on the solubilizing side chain of TPD moiety was introduced and the resulting PBDTTPD(K) has deep HOMO energy level (5.61 eV) and a bandgap of 1.77 e
Autor:
Ahmed Najari, Mario Leclerc, Amélie Robitaille, Serge Beaupré, Agnieszka Pron, Simon H. Drouin, Lauren G. Mercier
Publikováno v:
Macromolecules. 45:6906-6914
New push–pull conjugated polymers based on furo[3,4-c]pyrrole-4,6-dione (FPD) and selenopheno[3,4-c]pyrrole-4,6-dione (SePD) have been synthesized and compared with their thieno[3,4-c]pyrrole-4,6-dione (TPD) analogues to investigate the effects of
Autor:
Yanguang Zhang, Ye Tao, Jiayun Zhou, Ta-Ya Chu, Ahmed Najari, Jean-Rémi Pouliot, Serge Beaupré, Mario Leclerc, Jianping Lu
Publikováno v:
Advanced Functional Materials. 22:2345-2351
A series of low-bandgap alternating copolymers of dithienosilole and thienopyrrolodione (PDTSTPDs) are prepared to investigate the effects of the polymer molecular weight and the alkyl chain length of the thienopyrrole-4,6-dione (TPD) unit on the pho
Autor:
David Gendron, Mathieu Boivin, Claudine Nì. Allen, Mario Leclerc, Philippe Legros, Saïd Sadki, Philippe Berrouard, Chiara Ottone, William-Olivier Caron, Ahmed Najari, Yingping Zou
Publikováno v:
Macromolecules. 45:1833-1838
New alternating copolymers derived from thieno[3,4-c]pyrrole-4,6-dione (TPD) and 2,7-carbazole moieties have been synthesized by Suzuki cross-coupling reaction and characterized. These polymers combine interesting properties such as good solubility a
Publikováno v:
Macromolecules. 44:7184-7187
We report the synthesis of new push-pull conjugated polymers for bulk heterojunction solar cells based on benzo[1,2-b:4,5-b′]dithiophene (push) and thieno[3,4-d]thiazole (TTz) (pull) derivatives. Stille polycondensation between distannyl-BDT deriva
Autor:
Mario Leclerc, Jean-Rémi Pouliot, Charlotte Lepage-Pérusse, Philippe Berrouard, Serge Beaupré, Yingping Zou, Ahmed Najari
Publikováno v:
Advanced Functional Materials. 21:718-728
A new class of low-bandgap copolymers based on benzodithiophene (BDT) and thieno[3,4-c]pyrrole-4,6-dione (TPD) units is reported. Chemical modifications of the conjugated backbone promote both high molecular weights and processability while allowing
Publikováno v:
Chemistry of Materials. 23:456-469
Over the last five years, organic photovoltaic devices have emerged as a new competitor to silicon-based solar cells. In particular, the bulk heterojunction architecture (BHJ), in which the photoactive layer consists of a bicontinuous blend of an ele