| 摘要 |
Aspects of the invention include electroluminescent devices and methods for making the same. In certain embodiments, the devices include a substrate (202), a hole-injection electrode layer (204), a dielectric layer (206), an electroluminescent layer (212), an electron-injection electrode layer (208), and a cavity (210). In certain embodiments, the hole-injection electrode layer (204) is positioned above the substrate (202), the dielectric layer (206) is positioned above the hole-injection layer (204), and the electron-injection electrode layer (208) is positioned above the dielectric layer (206). In certain embodiments, this order is reversed. In certain embodiments, the cavity (210) extends through at least the dielectric layer (206) and/or may extend through one or more of the electrode layers (e.g., the hole-injection (204) and/or electron-injection electrode layer (208)). In certain embodiments, the electroluminescent layer (212) is positioned in the cavity (210) and is in contact with the hole-injection electrode layer (204), the dielectric layer (206), and the electron-injection electrode layer (208). In certain embodiments, the electroluminescent layer (212) is interposed between the hole-injection electrode layer (204) and the electron-injection electrode layer (208). In certain embodiments, the electroluminescent layer includes a polymeric material, and in certain embodiments, the electroluminescent layer includes one or more small molecules. In certain embodiments, an electrode layer (e.g., the electron-injection (208) or hole-injection electrode layer (204)) is positioned above the cavity (210) and is configured for directing light through the substrate (202). In certain embodiments, an electrode layer (e.g., the electron-injection (208) or hole-injection electrode layer (204)) is positioned above and spans across the cavity (210). The use of the produced device (s) in electroluminescent displays is also provided herein. |
