Exciton diffusion in energetically disordered organic materials

被引：101

作者：

Athanasopoulos, Stavros ^{[1
]}

Emelianova, Evguenia V. ^{[1
]}

Walker, Alison B. ^{[2
]}

Beljonne, David ^{[1
]}

机构：

[1] Univ Mons, Lab Chem Novel Mat, B-7000 Mons, Belgium

[2] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 19期

关键词：

diffusion; excitons; Monte Carlo methods; POLYMER MEH-PPV; ENERGY-TRANSFER; TEMPERATURE-DEPENDENCE; CHARGE-TRANSPORT; SOLAR-CELLS; EXCITATION TRANSPORT; SPECTRAL DIFFUSION; MIGRATION; DISSOCIATION; SIMULATIONS;

D O I：

10.1103/PhysRevB.80.195209

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We implement a simple, continuous, analytical model for exciton hopping in an energetically disordered molecular landscape. The model is parameterized against atomistic and lattice Monte Carlo simulations based on quantum-chemical calculations. It captures the essential physics of exciton diffusion in disordered media at different temperatures and yields a universal scaling law of the diffusion length with the dimensionless disorder parameter given by the ratio of the energetic disorder width to the thermal energy.

引用

页数：7

共 55 条

[1] The effects of orientational and energetic disorder on Forster energy migration along a one-dimensional lattice [J].

Ahn, Tai-Sang ;

Wright, Nicholas ;

Bardeen, Christopher J. .

CHEMICAL PHYSICS LETTERS, 2007, 446 (1-3) :43-48

[2] On the role of spectral diffusion of excitons in sensitized photoconduction in conjugated polymers [J].

Arkhipov, VI ;

Emelianova, EV ;

Bässler, H .

CHEMICAL PHYSICS LETTERS, 2004, 383 (1-2) :166-170

[3] Effective transport energy versus the energy of most probable jumps in disordered hopping systems [J].

Arkhipov, VI ;

Emelianova, EV ;

Adriaenssens, GJ .

PHYSICAL REVIEW B, 2001, 64 (12)

[4] Equilibrium carrier mobility in disordered hopping systems [J].

Arkhipov, VI ;

Emelianova, EV ;

Bässler, H .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 2001, 81 (09) :985-996

[5] Trap limited exciton transport in conjugated polymers [J].

Athanasopoulos, Stavros ;

Hennebicq, Emmanuelle ;

Beljonne, David ;

Walker, Alison B. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (30) :11532-11538

[6] DIFFUSION IN A RANDOM MEDIUM - A MONTE-CARLO STUDY [J].

AVRAMOV, I ;

MILCHEV, A ;

ARGYRAKIS, P .

PHYSICAL REVIEW E, 1993, 47 (04) :2303-2307

[7] Role of quantum coherence and energetic disorder in exciton transport in polymer films [J].

Barford, William ;

Duffy, Christopher D. P. .

PHYSICAL REVIEW B, 2006, 74 (07)

[8] Exciton transfer integrals between polymer chains [J].

Barford, William .

JOURNAL OF CHEMICAL PHYSICS, 2007, 126 (13)

[9] CHARGE TRANSPORT IN DISORDERED ORGANIC PHOTOCONDUCTORS - A MONTE-CARLO SIMULATION STUDY [J].

BASSLER, H .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1993, 175 (01) :15-56

[10] HOPPING CONDUCTION IN POLYMERS [J].

BASSLER, H .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1994, 8 (07) :847-854

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