Two-step dissociation of a polaron in conjugated polymers

Xiao Jing Liu; Kun Gao; Yuan Li; Jian Hua Wei; Shi Jie Xie

doi:10.1088/1009-1963/16/7/048

Two-step dissociation of a polaron in conjugated polymers

Xiao Jing Liu, Kun Gao, Yuan Li, Jian Hua Wei, Shi Jie Xie^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

We have studied the electric-field-driven motion of a polaron by solving the time-dependent Schrüdinger equation nonadiabatically and the lattice equation of motion simultaneously. It is found that the polaron may experience two sequent transitions under high fields; one is the transition from the subsonic to the supersonic state, and the other from the supersonic to dissociated state. The acoustic mode is decoupled from the charge when the polaron moves at a speed faster than the sound speed, and then the optical mode is decoupled at the second transition to make the polaron dissociate completely.

Original language	English (US)
Article number	048
Pages (from-to)	2091-2095
Number of pages	5
Journal	Chinese Physics
Volume	16
Issue number	7
DOIs	https://doi.org/10.1088/1009-1963/16/7/048
State	Published - Jul 1 2007
Externally published	Yes

Keywords

Conjugated polymer
Dynamics
Polaron

ASJC Scopus subject areas

General Physics and Astronomy

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10.1088/1009-1963/16/7/048

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title = "Two-step dissociation of a polaron in conjugated polymers",

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keywords = "Conjugated polymer, Dynamics, Polaron",

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T1 - Two-step dissociation of a polaron in conjugated polymers

AU - Liu, Xiao Jing

AU - Gao, Kun

AU - Li, Yuan

AU - Wei, Jian Hua

AU - Xie, Shi Jie

PY - 2007/7/1

Y1 - 2007/7/1

N2 - We have studied the electric-field-driven motion of a polaron by solving the time-dependent Schrüdinger equation nonadiabatically and the lattice equation of motion simultaneously. It is found that the polaron may experience two sequent transitions under high fields; one is the transition from the subsonic to the supersonic state, and the other from the supersonic to dissociated state. The acoustic mode is decoupled from the charge when the polaron moves at a speed faster than the sound speed, and then the optical mode is decoupled at the second transition to make the polaron dissociate completely.

AB - We have studied the electric-field-driven motion of a polaron by solving the time-dependent Schrüdinger equation nonadiabatically and the lattice equation of motion simultaneously. It is found that the polaron may experience two sequent transitions under high fields; one is the transition from the subsonic to the supersonic state, and the other from the supersonic to dissociated state. The acoustic mode is decoupled from the charge when the polaron moves at a speed faster than the sound speed, and then the optical mode is decoupled at the second transition to make the polaron dissociate completely.

KW - Conjugated polymer

KW - Dynamics

KW - Polaron

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DO - 10.1088/1009-1963/16/7/048

M3 - Article

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SN - 1009-1963

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SP - 2091

EP - 2095

JO - Chinese Physics

JF - Chinese Physics

IS - 7

M1 - 048

ER -

Two-step dissociation of a polaron in conjugated polymers

Abstract

Keywords

ASJC Scopus subject areas

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