Balanced white electroluminescence (EL) emission from binary organic blends was achieved via intermolecular down-convertion processes: the exciplex and the Foerster transfer mechanisms. This was obtained by combining a low electronic affinity (EA) molecule, a diamine derivative (TPD), with two high electronic affinity substituted oligothiophenes having high and low ionization potential (IP), respectively. Both the energy down-convertion mechanisms were exploited in two single active-layer organic light emitting devices, showing stable white emission, independent of the applied voltage.
|Autori:||Marco Mazzeo; Dario Pisignano; Laura Favaretto; Giovanna Sotgiu; Giovanna Barbarella; Roberto Cingolani; Giuseppe Gigli|
|Titolo:||White emission from organic light emitting diodes based on energy down-convertion mechanisms|
|Anno del prodotto:||2003|
|Digital Object Identifier (DOI):||10.1016/S0379-6779(03)00306-0|
|Appare nelle tipologie:||1.1 Articolo in rivista|