Low band gap conjugated small molecules containing benzobisthiadiazole and thienothiadiazole central units: synthesis and application for bulk heterojunction solar cells
Low band gap conjugated small molecules containing benzobisthiadiazole and thienothiadiazole central units: synthesis and application for bulk heterojunction solar cells
Photochemical stability of π-conjugated polymers for polymer solar cells: a rule of thumb
作者:Matthieu Manceau、Eva Bundgaard、Jon E. Carlé、Ole Hagemann、Martin Helgesen、Roar Søndergaard、Mikkel Jørgensen、Frederik C. Krebs
DOI:10.1039/c0jm03105d
日期:——
A comparative photochemical stability study of a wide range of Ï-conjugated polymers relevant to polymer solar cells is presented. The behavior of each material has been investigated under simulated sunlight (1 sun, 1000 W mâ2, AM 1.5G) and ambient atmosphere. Degradation was monitored during ageing combining UV-visible and infrared spectroscopies. From the comparison of the collected data, the influence of the polymer chemical structure on its stability has been discussed. General rules relative to the polymer structureâstability relationship are proposed.
A novel small molecule acceptor of a naphthalimide terminated imide-fused benzothiadiazole derivative was developed for P3HT-based organic solar cells with a relatively high open-circuit voltage of 0.78 V.
Novel low‐band gap alternating copolymers consisting of 9,9‐bis(2‐ethylhexyl)fluorene and 4,6‐di(2‐thienyl)thieno[3,4‐c][1,2,5]thiadiazole and its 3,3″‐dialkyl derivatives were synthesized by Suzuki copolymerization reaction, and their photophysical and electrochemical properties were studied. The copolymers possess small optical band gap 1.3–1.4 eV. The absorption covers the whole visible spectral
Effect of mono alkoxy-carboxylate-functionalized benzothiadiazole-based donor polymers for non-fullerene solar cells
作者:Gururaj P. Kini、Jun Young Choi、Sung Jae Jeon、Il Soon Suh、Doo Kyung Moon
DOI:10.1016/j.dyepig.2018.12.058
日期:2019.5
Structural modification of benzo[c]-1,2,5-thiadiazole (BT) has been proved to be the prominent way to fine-tune the frontier energy levels and the intermolecular and intramolecular interactions in organic conjugated materials. In this study, a new acceptor unit, alkyl benzo[c][1,2,5]thiadiazole-5-carboxylate (BT-Est), was designed and synthesized by drafting mono alkoxy-carboxylate substituent on 5-position
Narrow band gap conjugated polymers employing cross-conjugated donors useful in electronic devices
申请人:The University of Southern Mississippi
公开号:US11312819B2
公开(公告)日:2022-04-26
The invention provides for new polymer compounds and methods for the preparation of modular narrow band gap conjugated compounds and polymers that incorporate exocyclic cross-conjugated donors or substituents, as well as novel monomer components of such polymers and the resulting products which comprise materials and useful electronic devices with novel functionality.