Study of the interference effects in an optical cavity for organic light-emitting diode applications.
The interference effects generated in a bottom-emitting electroluminescent device fabricated on a polymer underlayer introduced with the aim of improving the anode roughness have been studied. The analysis of the interference fringes at different detection angles and the spatial coherence demonstrates that this phenomenon is due to multiple internal reflections that propagate in the polymer layer. This effect can be eliminated by modifying the polymer thickness and the incidence angle of the electromagnetic radiation at the anode-polymer interface. Inkjet etching technology is adopted for microcavities-shaped polymer structuring to destroy the resonator effect of the optical cavity.
Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA),Portici Research Center, Piazzale Enrico Fermi 1, 80055 Portici (Naples), Italy. fulvia.villani@enea.it
Fulvia
F
Villani
Immacolata Angelica
IA
Grimaldi
Giuseppe
G
Nenna
Anna De Girolamo
Ade G
Del Mauro
Fausta
F
Loffredo
Carla
C
Minarini