A theoretical study on photoexcitations in poly(p-phenylene vinylene)

Kun Gao; Shijie Xie; Sun Yin; Yuan Li; Desheng Liu; Xian Zhao

doi:10.1016/j.orgel.2009.09.009

A theoretical study on photoexcitations in poly(p-phenylene vinylene)

Kun Gao^*, Shijie Xie, Sun Yin, Yuan Li, Desheng Liu, Xian Zhao

^*Corresponding author for this work

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

22 Scopus citations

Abstract

By applying a femtosecond electric pump pulse to a poly(p-phenylene vinylene) (PPV) molecule, we theoretically investigate the photoexciting process. The simulations are performed within the framework of an extended version of one-dimensional Su-Schrieffer-Heeger tight-binding model combined with a nonadiabatic evolution method. We obtain excitons, biexcitons, as well as high-energy excitons. Their yields are calculated and it is found that they are determined by the photoexciting energy. Especially, we obtain a relation between their photogenerations and the photoexciting energies, which is helpful for optoelectronic applications of organic semiconductors. In addition, effect of the photoexciting intensity on the photogeneration of high-energy excitons, which contribute to free charges generation, is discussed.

Original language	English (US)
Pages (from-to)	1601-1605
Number of pages	5
Journal	Organic Electronics
Volume	10
Issue number	8
DOIs	https://doi.org/10.1016/j.orgel.2009.09.009
State	Published - Dec 2009
Externally published	Yes

Keywords

Excitation
Exciton
Polaron
Polymers

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
General Chemistry
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.orgel.2009.09.009

Cite this

@article{28ff1b9fb7734a5ca69a01bcf1116cc3,

title = "A theoretical study on photoexcitations in poly(p-phenylene vinylene)",

abstract = "By applying a femtosecond electric pump pulse to a poly(p-phenylene vinylene) (PPV) molecule, we theoretically investigate the photoexciting process. The simulations are performed within the framework of an extended version of one-dimensional Su-Schrieffer-Heeger tight-binding model combined with a nonadiabatic evolution method. We obtain excitons, biexcitons, as well as high-energy excitons. Their yields are calculated and it is found that they are determined by the photoexciting energy. Especially, we obtain a relation between their photogenerations and the photoexciting energies, which is helpful for optoelectronic applications of organic semiconductors. In addition, effect of the photoexciting intensity on the photogeneration of high-energy excitons, which contribute to free charges generation, is discussed.",

keywords = "Excitation, Exciton, Polaron, Polymers",

author = "Kun Gao and Shijie Xie and Sun Yin and Yuan Li and Desheng Liu and Xian Zhao",

year = "2009",

month = dec,

doi = "10.1016/j.orgel.2009.09.009",

language = "English (US)",

volume = "10",

pages = "1601--1605",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier",

number = "8",

}

TY - JOUR

T1 - A theoretical study on photoexcitations in poly(p-phenylene vinylene)

AU - Gao, Kun

AU - Xie, Shijie

AU - Yin, Sun

AU - Li, Yuan

AU - Liu, Desheng

AU - Zhao, Xian

PY - 2009/12

Y1 - 2009/12

N2 - By applying a femtosecond electric pump pulse to a poly(p-phenylene vinylene) (PPV) molecule, we theoretically investigate the photoexciting process. The simulations are performed within the framework of an extended version of one-dimensional Su-Schrieffer-Heeger tight-binding model combined with a nonadiabatic evolution method. We obtain excitons, biexcitons, as well as high-energy excitons. Their yields are calculated and it is found that they are determined by the photoexciting energy. Especially, we obtain a relation between their photogenerations and the photoexciting energies, which is helpful for optoelectronic applications of organic semiconductors. In addition, effect of the photoexciting intensity on the photogeneration of high-energy excitons, which contribute to free charges generation, is discussed.

AB - By applying a femtosecond electric pump pulse to a poly(p-phenylene vinylene) (PPV) molecule, we theoretically investigate the photoexciting process. The simulations are performed within the framework of an extended version of one-dimensional Su-Schrieffer-Heeger tight-binding model combined with a nonadiabatic evolution method. We obtain excitons, biexcitons, as well as high-energy excitons. Their yields are calculated and it is found that they are determined by the photoexciting energy. Especially, we obtain a relation between their photogenerations and the photoexciting energies, which is helpful for optoelectronic applications of organic semiconductors. In addition, effect of the photoexciting intensity on the photogeneration of high-energy excitons, which contribute to free charges generation, is discussed.

KW - Excitation

KW - Exciton

KW - Polaron

KW - Polymers

UR - http://www.scopus.com/inward/record.url?scp=71849089987&partnerID=8YFLogxK

U2 - 10.1016/j.orgel.2009.09.009

DO - 10.1016/j.orgel.2009.09.009

M3 - Article

AN - SCOPUS:71849089987

SN - 1566-1199

VL - 10

SP - 1601

EP - 1605

JO - Organic Electronics

JF - Organic Electronics

IS - 8

ER -

A theoretical study on photoexcitations in poly(p-phenylene vinylene)

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this