Abstract of:
A. Nollau, M. Hoffmann, K. Floreck, T. Fritz, K. Leo,
A simple measurement of the absolute internal quantum efficiency of thin
organic films,
J. Appl. Phys. 87 (2000) 7802-7804.
Abstract:
In this article, we present a simple method for the determination of
the absolute internal quantum efficiency of thin organic dye layers.
The basic idea is the comparison of the luminescence of the film with
the reflection of a white diffusive reflectance standard measured at
one angle with a simple spectrofluorometer. The method is compared to
the procedure of de Mello [J. C. de Mello, H. F. Wittmann and
R. H. Friend, Adv. Mater. 9, 230 (1997)], which uses an integrating
sphere. As examples, the quantum yields of films of the two perylene
derivatives N,N-dimethylperylene-3,4:9,10-dicarboximide and
3,4,9,10-perylenetetracarboxylic dianhydride, are determined.
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last updated: Dec 2007