Singlet exciton diffusion in MEH-PPV films studied by exciton-exciton annihilation

Lewis, A. J.
Ruseckas, A.
Gaudin, O. P. M.
Webster, G. R.
Burn, P. L.
Samuel, I. D. W.

Publication date

December 2006

DOI

10.1016/j.orgel.2006.05.009

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 gamma = (2.8 +/- 0.5) x 10(-8) cm(3) s(-1). This enables us to estimate the exciton diffusion coefficient to be D = (3 +/- 1) x 10(-3) cm(2) s(-1). This corresponds to a diffusion length between 5 and 8 nm for one-dimensional diffusion. (c) 2006 Elsevier B.V. All rights reserved.</p

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Singlet exciton diffusion in MEH-PPV films studied by exciton-exciton annihilation

Abstract

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Singlet exciton diffusion in MEH-PPV films studied by exciton-exciton annihilation

Abstract

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