Theoretical Analysis of the Radiation-Induced Conductivity in Polymers Exposed to Pulsed and Continuous Electron Beams

Polymers. 2020. Vol. 12. No. 628. P. 1–10.

, , Aleksey D. Zhadov, Dmitriy A. Abrameshin

Abstract: We have performed comparative numerical calculations using a multiple trapping (MT)
formalism with an exponential and an aggregate two-exponential trap distributions for describing
two mostly used experimental setups for studying the radiation-induced conductivity (RIC) and
the time-of-flight (TOF) effects. Computations have been done for pulsed and long-time
electron-beam irradiations in a small-signal regime. Predictions of these two approaches differ
appreciably in both setups. The classical MT approach proved very popular in photoconductive
polymers generally and in molecularly doped polymers in particular, while a newly proposed
complex MT worked well in common polymers. It has been shown that the complex MT
successfully accounts for the presence of inherent deep traps, which may or may not have an
energy distribution.

Ключевые слова: radiation-induced conductivity, радиационная электропроводность, the multiple trapping model, модель многократного захвата, численные расчеты, полимеры, polymers, numerical calculations, time-resolved transient currents, transit time effects, разрешенные по времени переходные токи, эффекты времени транзита

ПУБЛИКАЦИЯ ПОДГОТОВЛЕНА ПО РЕЗУЛЬТАТАМ ПРОЕКТА: Исследование процессов генерации, рекомбинации и транспорта носителей заряда в перспективных полимерных материалах космической техники и солнечной энергетики (2020)