CHARGE INJECTION LAYER FOR ELECTRO-OPTICAL DEVICES

Applications: The main applications of the technology are: - Lighting Technology: Seeing that OLED technology used in displays have already made major advancements in efficacy and quality of light,future applications of OLEDs could include large panels or wallpaper of light for signage or decoration, folded panels or even in clothing. - Electronic Display Applications: It is used in mobile phones, mp3 players, panelviews and even TV due to OLEDs provide good quality, excellent resolution and efficiency in flat displays. Advantages: The most remarkable advantages provided by this technology are: - The charge injection layer of the invention allows obtaining a highly efficient OLED, that is, a sufficient number of charges reach the optically active layer up to levels exceeding even those provided by the standard PEDOT. That layer comprises a polymer having conjugated units and a salt mixed with the aforementioned polymer, said layer characterized in that the oxidation state of the polymer is not modified when it is mixed with the salt. It implies a major energy stability. - Another advantage of the injection layer is that it facilitates the preparation of the conductive polymer/electroluminiscent material group when a solution-based preparation technique is used. - The devices with this injection layer can be produced without using water as a solvent, which may be beneficial for the stability and efficiency of the devices. - The injection layer is in its most energetically stable state, nor reduced or oxidized, and therefore is less reactive and more stable than other injection layers that are in the oxidized or reduced state.