A novel approach to the preparation of light-emitting diodes is presented here. Hybrid sol–gel layers have been employed as a film-forming rigid matrix doped with highly fluorescent perylene dyes (e.g., see Fig.) as light emitters. Electroluminescence was found to be remarkable even at incorporation levels as low as 6 wt.-% perylene derivative.
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Schneider et al. (2000) studied this question.