New small-molecular benzimidazole derivatives for photovoltaics: synthesis, optical and electrochemical properties and application in perovskite solar cells

Авторы: Kuklin Sergei A., Safronov Sergey V., Fedorovskii Oleg Yu, Khakina Ekaterina A., Kulik Leonid V., Utkin Dmitry E., Frolova Lyubov A., Troshin Pavel A., Khokhlov Alexei R.
Журнал: Mendeleev Communications
Том: 33
Год издания: 2023
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 306
Последняя страница: 310
DOI: 10.1016/j.mencom.2023.04.003
Аннотация: New small molecule photovoltaic materials containing benzimidazole fragment were prepared by cross-coupling of the corresponding 1-bromo-4-(imidazol-2-yl)benzenes withmultiborylated/stannylated polycyclic (het)arenes. Energies of HOMO/LUMO levels were calculated from cyclicvoltammetry and UV/VIS spectroscopy data and are within the ranges –5.27...–5.73 and –2.33...–2.89 eV, respectively. Solar cells based on three different perovskites as lightabsorbing layers and compound SM7 as electron transporting material demonstrated power conversion efficiency values up to 10.78% without doping additives or perovskiteengineering.
Добавил в систему: Куклин Сергей Александрович

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