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Increased order and improved hole mobility in MEH-PPV thin films by removing shortest chainsстатья
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: 7 ноября 2016 г.
- Авторы: Ming Hui Li, Chen Hsin-Liang, Huang Yi-Fang, Chuang Wei-Tsung, Chen Yu-Ren, Tsai Hung-Sheng, Semenikhin Oleg A., White Jonathon David
- Журнал: Chemical Physics Letters
- Том: 505
- Номер: 4-6
- Год издания: 2011
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 100
- Последняя страница: 105
- DOI: 10.1016/j.cplett.2011.02.026
- Аннотация: The effect of polydispersity on morphology and charge transport in MEH-PPV drop-cast films was investigated using grazing incidence X-ray diffraction and time-of-flight. Removing short chain segments promoted the capability of crystallization resulting in higher hole mobility and non-dispersive transport down to lower temperatures. The slope for the Poole-Frenkel relationship at 298 K was increased, and its change with temperature decreased, indicating reduced spatial inhomogeneity. Analysis using Bassler's Gaussian disorder model, found minimal impact on energy disorder and infinite temperature zero field mobility. A good fit for hopping site separation and spatial disorder was only possible for the lower polydispersity device, suggesting that the lower polydispersity films have less mesoscopic inhomogeneity. (C) 2011 Elsevier B.V. All rights reserved.
- Добавил в систему: Семенихин Олег Александрович