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Measurement of the photobleaching kinetics of semiconducting polymer films by the pump-probe methodстатья
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: 18 июля 2013 г.
- Авторы: Ozimova A.E., Bruevich V.V., Paraschuk D.Yu
- Журнал: Quantum Electronics
- Том: 41
- Номер: 12
- Год издания: 2011
- Издательство: Turpion - Moscow Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 1069
- Последняя страница: 1072
- DOI: 10.1070/QE2011v041n12ABEH014715
- Аннотация: A phenomenological model of the laser photobleaching dynamics of a semiconducting polymer in a dual-beam scheme for different wavelengths of the burning and probe beams is developed. An experimental method is implemented based on this model, which allows one to investigate materials with significantly different photodegradation rates. The photodegradation quantum yield in mixtures of a semiconducting polymer belonging to polyparaphenylene vinylenes (MEH-PPV) with a low-molecular electron acceptor 2,4,7-trinitrofluorenone (TNF) is measured at burning wavelengths of 488 and 514 nm for different component ratios of MEH-PPV : TNF. It is found that adding the acceptor decreases the polymer photodegradation quantum yield by at least four orders of magnitude in the MEH-PPV : TNF = 1 : 0.4 mixture; the photodegradation quantum yields are the same at both wavelengths. It is shown that the photodegradation rates of the MEH-PPV : TNF films measured by laser photobleaching and IR spectroscopy are in good agreement.
- Добавил в систему: Бруевич Владимир Васильевич