Abstract

Despite considerable work done in the field of energy transfer via sensitized luminescence, ^1-3 serious questions⁴ remain concerning the relationship between the primary experimental observable and microscopic parameters which govern exciton transport. We present a quantitative analysis of these questions as they pertain to several specific excitontrap systems, particularly tetrachlorobenzene, naphthalene and anthracene. On the basis of a general theory⁵ which treats the capture process on an equal footing with motion, we address quantitatively the concept of time-dependent energy transfer rates. We find that the time dependence depends strongly on the effective dimensionality, becoming more pronounced as the dimensionality decreases and that for fixed dimensionality the time dependence becomes less marked as the capture process is slowed down.

© 1984 Optical Society of America