Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1265721 | Organic Electronics | 2006 | 5 Pages |
Abstract
We report time-resolved photoluminescence studies in MEH-PPV films for a wide range of excitation intensities. The results fit well to a diffusion-limited exciton–exciton annihilation model with an annihilation constant γ = (2.8 ± 0.5) × 10−8 cm3 s−1. This enables us to estimate the exciton diffusion coefficient to be D = (3 ± 1) × 10−3 cm2 s−1. This corresponds to a diffusion length between 5 and 8 nm for one-dimensional diffusion.
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Authors
A.J. Lewis, A. Ruseckas, O.P.M. Gaudin, G.R. Webster, P.L. Burn, I.D.W. Samuel,