کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9776426 1509485 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature, charge carrier density, and electric field dependence of mobilities in disordered conjugated polymers: simulation results
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Temperature, charge carrier density, and electric field dependence of mobilities in disordered conjugated polymers: simulation results
چکیده انگلیسی
We present the results of simulation studies of the dependence on temperature, charge carrier density, and electric field of the mobility μ in disordered conjugated polymers. The disorder is modeled by a Gaussian density of states (DOS) with width σ. We base our analysis on an exact numerical solution of the Pauli Master equation. The recently experimentally determined carrier density dependence, ranging from densities typically found in light-emitting diodes (LEDs) up to those found in field-effect transistors (FETs), is fully reproduced. At low temperatures T, we find deviations from the generally accepted μ∼exp[−const.(σ/kT)2] behavior. Our calculations show that the electric field dependence does not play a prominent role at the driving voltages of polymer devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 152, Issues 1–3, 20 September 2005, Pages 157-160
نویسندگان
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