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Dynamics of photoinduced radical pairs in poly(3-dodecylthiophene)/fullerene compositeстатья
Информация о цитировании статьи получена из
Scopus
Дата последнего поиска статьи во внешних источниках: 8 июня 2022 г.
- Авторы: Krinichnyi V.I., Roth H.K., Sensfuss S., Schrödner M., Al-Ibrahim M.
- Журнал: Physica E
- Том: 36
- Номер: 1
- Год издания: 2007
- Первая страница: 98
- Последняя страница: 101
- DOI: 10.1016/j.physe.2006.08.004
- Аннотация: Radical pair laser (660 nm) photoinduced in poly(3-dodecylthiophene)/[1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C-6 1] (P3DDT/ PCBM) composite were investigated by the X-band light-induced EPR method in a wide temperature region. Two lines with different magnetic parameters were attributed to non-interacting polaron and fullerene ion-radical. The susceptibility of these centres follow activation law and decrease drastically at T > 180 K due to their geminate recombination. The spin-lattice and spin-spin relaxation times of these paramagnetic centres were determined separately by the steady-state saturation method. It was shown that two independent spin dynamics processes are mainly realized in illuminated P3DDT/PCBM composite, namely polaron diffusion along the polymer chains with activation energy of 0.071 eV and rotation of fullerene ion-radicals with activation energy of 0.024 eV.
- Добавил в систему: Криничный Виктор Иванович