Monte Carlo simulation of bimolecular exciton annihilation in an energetically random hopping system

✍ Scribed by M. Scheidler; B. Cleve; H. Bässler; P. Thomas

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 484 KB
• Volume: 225
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)87107-8

✦ Synopsis

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/dtcc t-l. For times exceeding the energetic relaxation time of the excitations the classic dn/dtcc t-* behaviour is approached. The dependence of the bimolecular recombination coefficient on both time and temperature parallels that of the difksivity of non-interacting excitations.