MONTE-CARLO SIMULATION OF BIOMOLECULAR EXCITON ANNIHILATION IN AN ENERGETICALLY RANDOM HOPPING SYSTEM

被引：42

作者：

SCHEIDLER, M ^{[1
]}

CLEVE, B ^{[1
]}

BASSLER, H ^{[1
]}

THOMAS, P ^{[1
]}

机构：

[1] PHILIPPS UNIV MARBURG,WISSENSCH ZENTRUM MAT WISSENSCH,D-35032 MARBURG,GERMANY

来源：

CHEMICAL PHYSICS LETTERS | 1994年 / 225卷 / 4-6期

关键词：

D O I：

10.1016/0009-2614(94)87107-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The kinetics of bimolecular annihilation of neutral excitations in hopping systems in which the energy of the hopping sites varies according to a Gaussian distribution has been studied employing Monte Carlo simulation techniques. A transition from dispersive to non-dispersive reaction kinetics is observed, the former giving rise to a reaction law dn/dt is-proportional-to t-1. For times exceeding the energetic relaxation time of the excitations the classic dn/dt is-proportional-to t-2 behaviour is approached. The dependence of the bimolecular recombination coefficient on both time and temperature parallels that of the diffusivity of non-interacting excitations.

引用

页码：431 / 436

页数：6

共 19 条

[1] 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

[2] NONDISPERSIVE-TO-DISPERSIVE CHARGE-TRANSPORT TRANSITION IN DISORDERED MOLECULAR-SOLIDS [J].

BORSENBERGER, PM ;

PAUTMEIER, LT ;

BASSLER, H .

PHYSICAL REVIEW B, 1992, 46 (19) :12145-12153

[3] OPTICAL SPECTROSCOPY OF TRIPLET EXCITONS AND CHARGED EXCITATIONS IN POLY(P-PHENYLENEVINYLENE) LIGHT-EMITTING-DIODES [J].

BROWN, AR ;

PICHLER, K ;

GREENHAM, NC ;

BRADLEY, DDC ;

FRIEND, RH ;

HOLMES, AB .

CHEMICAL PHYSICS LETTERS, 1993, 210 (1-3) :61-66

[4] TEMPERATURE-DEPENDENCE OF DELAYED EMISSION FROM POLY(N-VINYLCARBAZOLE) - COMPARISON OF POLYMERS PREPARED BY FREE-RADICAL AND CATIONIC INITIATION [J].

BURKHART, RD ;

AVILES, RG .

MACROMOLECULES, 1979, 12 (06) :1078-1081

[5] KINETICS OF TRIPLET PROCESSES IN POLY(N-VINYLCARBAZOLE) FROM 77-K TO 298-K [J].

BURKHART, RD ;

AVILES, RG .

MACROMOLECULES, 1979, 12 (06) :1073-1078

[6]

HENSEL K, UNPUB

[7] DIFFUSION OF OPTICAL-EXCITATION AT FINITE TEMPERATURES [J].

HUBER, DL .

JOURNAL OF CHEMICAL PHYSICS, 1983, 78 (05) :2530-2532

[8] EXCITON-EXCITON ANNIHILATION AND EXCITON KINETICS IN POLY(DI-N-HEXYLSILANE) [J].

KEPLER, RG ;

SOOS, ZG .

PHYSICAL REVIEW B, 1993, 47 (15) :9253-9262

[9] MUTUAL ANNIHILATION OF SINGLET EXCITONS IN SIGMA-CONJUGATED POLYSILANES [J].

KEPLER, RG ;

ZEIGLER, JM .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1989, 175 :85-91

[10]

KEPLER RG, 1989, SYNTH METALS C, V28, P573

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