Modeling of the dynamics of charge separation in an excited poly(phenylene vinylene)/C60 system -: art. no. 035206

被引：14

作者：

Johansson, Å ^{[1
]}

Stafström, S ^{[1
]}

机构：

[1] Linkoping Univ, Dept Phys, SE-58183 Linkoping, Sweden

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.68.035206

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dynamics of charge separation in an excited poly(phenylene vinylene) chain coupled to a C-60 has been investigated. A charge-transfer time of around 200 fs was found, preceded by a delay time. The scenario of further electron migration in a system of three coupled C-60 molecules under an electric field was also simulated. The calculations were performed by employing an extended version of the Su-Schrieffer-Heeger model in which bond-length deviations as well as angular changes are included as classical harmonic potentials.

引用

页数：6

共 30 条

[1]

[Anonymous], [No title captured]

[2] Ultrafast on-chain dissociation of hot excitons in conjugated polymers [J].

Arkhipov, VI ;

Emelianova, EV ;

Barth, S ;

Bässler, H .

PHYSICAL REVIEW B, 2000, 61 (12) :8207-8214

[3] Hot exciton dissociation in conjugated polymers [J].

Basko, DM ;

Conwell, EM .

PHYSICAL REVIEW B, 2002, 66 (15) :1-7

[4]

Brabec CJ, 2001, ADV FUNCT MATER, V11, P15, DOI 10.1002/1616-3028(200102)11:1<15::AID-ADFM15>3.0.CO

[5]

2-A

[6]

BRANKIN RW, 1994, COMPUTER CODE RKSUIT

[7] Photoinduced charge transfer in conducting polymer C-60 composites [J].

Bruening, J ;

Friedman, B .

JOURNAL OF CHEMICAL PHYSICS, 1997, 106 (23) :9634-9638

[8] Direct measurement of conjugated polymer electronic excitation energies using metal/polymer/metal structures [J].

Campbell, IH ;

Hagler, TW ;

Smith, DL ;

Ferraris, JP .

PHYSICAL REVIEW LETTERS, 1996, 76 (11) :1900-1903

[9] POLARONS IN C60 [J].

FRIEDMAN, B .

PHYSICAL REVIEW B, 1992, 45 (03) :1454-1457

[10] LATTICE DISTORTION AND ENERGY-LEVEL STRUCTURES IN DOPED C-60 AND C-70 MOLECULES STUDIED WITH THE EXTENDED SU-SCHRIEFFER-HEEGER MODEL - POLARON EXCITATIONS AND OPTICAL-ABSORPTION [J].

HARIGAYA, K .

PHYSICAL REVIEW B, 1992, 45 (23) :13676-13684

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