Process for making contained layers and devices made with same
View Patent ↗There is provided a process for forming a contained second layer over a first layer, including the steps: forming the first layer having a first surface energy; treating the first layer with a reactive surface-active composition to form a treated first layer having a second surface energy which is lower than the first surface energy; exposing the treated first layer with radiation; and forming the second layer. There is also provided an organic electronic device made by the process.
1. A process for forming a contained second layer over a first layer, said process comprising:
forming the first layer having a first surface energy;
treating the first layer with a reactive surface-active composition to form a treated first layer having a second surface energy which is lower than the first surface energy;
exposing the treated first layer with radiation, wherein the radiation is applied in a pattern to form exposed regions and unexposed regions of the reactive surface-active composition;
removing either the exposed or unexposed regions of the reactive surface-active composition; and
forming the second layer.
2. The process of claim 1 , wherein the reactive surface-active composition is a fluorinated material.
3. The process of claim 1 , wherein the reactive surface-active composition is a radiation-hardenable material and the unexposed regions are removed.
4. The process of claim 1 , wherein the reactive surface-active composition is a crosslinkable fluorinated surfactant.
5. The process of claim 1 , wherein the reactive surface-active composition is deposited with the first layer.
6. The process of claim 5 , wherein the first layer is formed from a liquid composition and the reactive surface-active composition is in the liquid composition.
7. The process of claim 1 , wherein the regions are removed by heating.
8. A process for making an organic electronic device comprising a first organic active layer and a second organic active layer positioned over an electrode, said process comprising
forming the first organic active layer having a first surface energy over the electrode
treating the first organic active layer with a reactive surface-active composition to form a treated first organic active layer having a second surface energy which is lower than the first surface energy,
exposing the treated first organic active layer with radiation, wherein the radiation is applied in a pattern to form exposed regions and unexposed regions of the reactive surface-active composition,
removing either the exposed or unexposed regions of the reactive surface-active composition; and
forming the second organic active layer.