期刊
PHYSICAL REVIEW B
卷 80, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.195209
关键词
diffusion; excitons; Monte Carlo methods
资金
- European Commission STREP [NMP-CT2006- 016434]
- Belgian Science Policy [P6/27]
- Belgian Research Science Foundation (FNRS and FRFC through the Interuniversity Scientific Calculation Facility, ISCF)
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.
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