Open AccessInjection and transport of the charge carriers in metal/impurity polymer/metal structure
Author(s) -
Haihong Li,
Dongmei Li,
Wen Li,
Yuan Li,
Xiaojing Liu,
Desheng Liu,
Shijie Xie
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.1117
Subject(s) - impurity , materials science , electric field , polymer , metal , charge carrier , condensed matter physics , electron , ion , lattice (music) , charge (physics) , chemical physics , physics , quantum mechanics , acoustics , metallurgy , composite material
Using the tight-binding Su-Schrieffer-Heeger (SSH) model and a nonadiabatic dynamical evolution method, the dynamic process of the charge carrier injection and transport through metal/ polymer/metal structure was studied, for which the polymer chain contains an impurity ion. The electron wave function was described by the time-dependent Schrdinger equation, while the polymer lattice was treated classically by the Newtonian equations of motion. It was found that the impurity ion acts as a control gate on the charge carriers, while the state of the control gate is determined by the strength of the electric field and the magnitude of the bias voltage.