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>Nouveaux matériaux hôtes pour les dopants phosphorescents bleus : vers de nouvelles diodes électrophosphorescentes bleues hautes performances
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Nouveaux matériaux hôtes pour les dopants phosphorescents bleus : vers de nouvelles diodes électrophosphorescentes bleues hautes performances
Organic light emitting diodes (OLEDs) represent an evolution of the light emitting diode (LED) technology in which light is emitted from an organic molecule. This work is focused on the synthesis and the study of new molecules, which will be used (i) as emissive layer in fluorescent OLEDs, or (ii) as host material in phosphorescent OLED (PhOLED). First of all an introduction of the important field of organic electronics is presented, followed by the presentation of the synthesis of new organic semi-conductors (3π-2spiro or 2π-1spiro hydrocarbons). A detailed analysis of their properties was performed and after incorporation in the devices, the performances of blue OLEDs and PhOLEDs are compared. The performances recorded attests that this molecular design is of great interest.
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