Electroluminescent Device, Fabrication Method, and Light-Emitting Method for Realizing Multi-Color and White-Color Emission

摘要

The present invention provides an electroluminescent device emitting multiple colors inculdling copper-green light and red light, a fabrication method thereof, and a light-emitting method for realizing multi-color and white-color emission by using the same. The electroluminescent device of the present invention is formed by associating at least one nano-mateiral and at least one polymer or low-molecular-weight light-emitting material. The fabrication method of the electroluminescent device comprises: a step of producing the nano-material; a step of dissolving the polymer or low-molecular-weight light-emitting material; a step of forming a nano-floating material from the nano-mateial; a step of associating the polymer or the low-molecular-weight light-emitting material with the nano-material to form a nano-floating material and dissolving it; a step of coating the associated material of the nano-material, the polymer or low-molecular-weight light-emitting material on a substrate; and a step of fixing a solid solution formed by associating the nano-material, the polymer or low-molecular-weight light-emitting material on the substrate. The light-emitting method for realizing multi-color emission by using the device comprises: a step of applying a voltage (V1) enabling emission of color 1 of the multiple color lights onto the electroluminescent device fabricated by the above fabrication method; and a step of applying a voltage (V2) enabling the emission of color 2 of the multiple color lights. The light-emitting method for realizing white-color emission by using the device comprises: a step of continuously and repetitively applying the voltages V1, V2 in the above light-emitting method for realizing multi-color emission onto the electroluminescent device fabricated by the abovefabrication method. According to the present invention, emitting the lights with plural wavelengths such as the copper-green light and red light can be realized by using one electroluminescent device, and multi-color emission can be realized by selectively applying voltages onto the electroluminescent device. Furthermore, by continuously and repetitively turning on/off the light-emission of each color, white light can be obtained by the residual-image effect.