کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9586251 1505939 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transient photoconductivity and charge generation in thin films of π-conjugated polymers
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Transient photoconductivity and charge generation in thin films of π-conjugated polymers
چکیده انگلیسی
Transient photocurrents in thin films of methyl-substituted poly-phenylene (MeLPPP) and in phenyl-substituted poly-phenylenevinylene-type copolymer (PhPPV) were observed upon excitation by a laser flash. The questions on the origin of the optical charge generation and following charge transport in these materials are addressed. It has been argued that the observed current transient is a convolution of time-dependent charge carrier generation and their motion. By comparing the field-dependent photogeneration yield in MeLPPP and PhPPV, transient absorption and double shot photogeneration, the rate-limiting steps for photoionization in studied polymers were identified.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 112, Issues 1–4, April 2005, Pages 363-367
نویسندگان
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