Data di Pubblicazione:
2006
Citazione:
Electroluminescent orthofused thiophene dye embedded in polyvinylcarbazole / U. Giovannella, C. Botta, A. Bossi, E. Licandro, S. Maiorana. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 100:8(2006), pp. 083107.083107/1-083107.083107/4.
Abstract:
The photoluminescence and electroluminescence of a molecular precursor of helicene embedded in an active matrix formed by a hole-transporter polymer mixed with an electron transporter molecule are reported. Optimization of the weight ratio between the dye and the matrix is performed by a detailed study of the absolute emission efficiencies obtained by photoexcitation and by charge injection. A 0.17 wt% dye concentration gives the best compromise among energy transfer, transport properties, and quenching effects induced by dye aggregation, leading to an external blue electroluminescence efficiency of 0.4% in a single layer device
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
U. Giovannella, C. Botta, A. Bossi, E. Licandro, S. Maiorana
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