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Design and synthesis new ultra low band gap thiadiazolouinoxaline based polymers for near infrared organic photovoltaic applicationстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 сентября 2016 г.
- Авторы: Keshtov M.L., Kuklin S.A., Radychev N.A., Nikolaev A.Y., Koukaras E.N., Abhishek Sharma, Sharma G.D.
- Журнал: RSC advances
- Том: 6
- Год издания: 2016
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 14893
- Последняя страница: 14908
- DOI: 10.1039/C5RA24364E
- Аннотация: Two D-A copolymers F1 and F2 with fluorene and thiazole units substituted respectively to thiadiazoloquinoxaline (TDQ) unit to enhance the electron-accepting strength of TDQ. The copolymers were synthesized by cross-coupling Stille reaction, and their optical and electrochemical properties were examined revealing that they have ultra low bandgaps, and absorption in the near infrared. These copolymers were employed as donor along with PC71BM as electron acceptor for the fabrication of solution processed bulk heterojunction (BHJ) polymer solar cells. After the optimization of donor to acceptor weight ratio and solvent additive (4 % v DIO as solvent additive), the devices with F1:PC71BM and F2:PC71BM showed power conversion efficiencies (PCEs) of 5.80 and 3.32 %, respectively. Although F2 possesses a broader absorption profile as compared to F1, the low value of PCE for the F2 based device has been attributed to the low LUMO offset between F2 and PC71BM that limited the exciton dissociation. The above results indicate that these copolymers can be utilized for ternary BHJ and tandem solar cells, to achieve the high PCE. Key word: NIR conjugated co-polymers, bulk heterojunction, polymer solar cells, solvent additives
- Добавил в систему: Куклин Сергей Александрович
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