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Synthesis alternating D-A1-D-A2 terpolymers comprising two electron-deficient moieties, quinoxaline and benzothiadiazole units for 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., Khokhlov A.R., Kuklin S.A., Chen F.C., Nikolaev A.Y., Koukaras E.N., Sharma G.D.
- Журнал: Polymer Chemistry
- Том: 7
- Год издания: 2016
- Первая страница: 4025
- Последняя страница: 4035
- DOI: 10.1039/C6PY00652C
- Аннотация: Two new regular (D-A1-D-A2) terpolymers P1 and P2 containing two electron-deficient moieties quinoxaline and benzothiadiazole were designed and synthesized. The resulting copolymers exhibit high thermal stability, broad absorption in the range of 300 to 950 nm, both low Eg of 1.36 and 1.57eV, as well as deep HOMO energy levels of -5.24 and -5.62 eV. Such properties are useful in improving the photovoltaic properties. Polymer solar cells (PSCs) based on optimized P1:PC71BM and P2:PC71BM (1:2 by weight) active layers with a 3 v% DIO/CF additive displayed power conversion efficiency (PCE) of 5.28 % (Voc of 0.93 V, Jsc of 10.28 mA/cm2 and FF of 0.55) and 5.54 % (Voc of 0.80 V, Jsc of 12.18 mA/cm2 and FF of 0.57), respectively under illumination of AM1.5G (100 mWcm-2). In order to increase the PCE further, the DIO/CF processed active layer was subjected to methanol treatment that resulted in a PCE increase up to 7.13 % and 7.59 % for the P1:PC71BM and P2:PC71BM based devices, respectively. The methanol treatment increases all of the photovoltaic parameters that is attributed to the lowering of series resistance, an increase of hole mobility, and reduction of charge recombination due to enlarged built in potential. Keywords: Terpolymers, bulk heterojunction, polymer solar cells, power conversion efficiency, solvent additives, surface treatment
- Добавил в систему: Куклин Сергей Александрович
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