Full-wave white-light organic electroluminescent device and producing method thereof

Abstract

This invention discloses one wavelength white light organic lighting device, which is located with electrical transmission layer, lighting layer, electrical isolation layer, electronic transmission layer and electrical injection layer between the transparent baseboard and negative electrode, wherein, the lighting layer comprises lighting materials with green dye to form green source lighting layer; the electrical isolation layer is mixed with one lighting materials as one red source isolation layer.

Description

technical field [0001] The present invention relates to a full-wavelength white light organic electroluminescence device, in particular to a full-wavelength white light organic electroluminescence device that can balance and reconcile various colors of light to emit mixed white light. The white light can be used with color filters to make a full-color panel. . Background technique [0002] Organic light-emitting diode (OLED) can also be called organic electroluminescence (OEL for short). Simply put, it is to apply a bias voltage to make electron holes pass through the hole transport layer (Hole Transporting Layer) and the electron transport layer (Electron Transporting Layer) respectively. After transporting Layer), it enters an organic material light-emitting layer with light-emitting properties, and forms an "exciton" (exciton) when recombined in it, and then releases the energy and returns to the ground state (ground state), and these The released energy will excite the ...

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Problems solved by technology

It can be seen from the above and the figure that the host material is doped with the guest material. The doping concentration of the guest material is almost less than 1%, and some are even less than 0.1%. It is extremely difficult to control the process parameters, so as long as there is a little The change of the concentration percentage is a drastic change, and it is difficult to make the two light-emitting regions emit light evenly in the design of the double-emitting layer. Often the energy levels of the two light-emitting layers are too close. With the increase of the operating voltage Change, the light-emitting area is also easy to shift with the voltage movement

Moreover, the emission spectrum is seriously insufficient in the long wavelength part (such as image 3 shown), the intensities of the three primary colors of red, green and blue vary greatly

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