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A Monte Carlo simulation of spectral diffusion in the presence of energetic and substitutional disorder

✍ Scribed by A.K. Dutta; T.N. Misra; G.B. Talapatra

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
559 KB
Volume
212
Category
Article
ISSN
0009-2614

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✦ Synopsis

The isotropic exchange mediated spectral diffusion process in one-and two-dimensional systems with energetic as well as substitutional disorder has been studied by employing a Monte Carlo simulation technique. The dynamics and the mechanism of the spectral diffusion process have been investigated by monitoring the flow of energy of an excitation started at specified sites with a Gaussian distribution of the energy profile. The importance of acceptor concenlration and the excitation transfer topology for the switching of spectral diffusion has been observed. The concentration-dependent excitation transport efliciency in two dimensions is found to be consistent with the percolation model.

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