Apparatus with self-assembly molecule as electron injection layer of organic LED and method thereof

Abstract

The invention is a device for using self-assembly molecular as the electron ejecting layer of emitting LED and the method. It uses a kind of self-assembly molecular as electron ejecting layer, it forms a self-assembly molecular film with self pair pole on negative metal layer, the film is used as an electron ejecting layer, which binds with negative metal through dipole and donor of self-assembly molecular, the dipole direction of self-assembly molecular can rebound to the improvement of electron ejecting efficiency, thus increases the emitting efficiency of emitting LED component, and decrease the start voltage of emitting LED component.

Description

technical field [0001] The present invention relates to a device and method for using self-assembled molecules as an electron injection layer of an organic light-emitting diode, in particular to a device and method for increasing electron injection capability and transmission efficiency by utilizing the dipolarity of self-assembled molecules. Background technique [0002] Organic light emitting diode (OLED) has many advantages such as self-illumination, thin thickness, fast response speed, wide viewing angle, good resolution, high brightness, flexible panel and wide temperature range, etc. It is believed that Thin film transistor liquid crystal display (TFT-LCD) is a new generation of flat-panel display technology, and the light emitting principle of the organic light emitting diode (OLED) is to use the characteristics of the material to place electron holes on the light emitting layer. Combined, the energy generated will elevate the light-emitting molecules from the ground ...

AI Technical Summary

Problems solved by technology

[0005] That is, the known organic light-emitting diode (OLED) process is to vapor-deposit organic light-emitting materials on the anode conductive film, and finally cover the cathode metal. The energy levels of the holes produced are relatively consistent from the anode to the organic light-emitting layer, while the cathode The energy gap between the metal and the organic light-emitting layer is large, so it is difficult to overcome the energy barrier required for electron injection. The existing technology is to use alkali gold or alkaline earth metal materials and high stability aluminum (Al) or silver ( Ag) to form a composite material, indium tin oxide (ITO) or indium zinc oxide (IZO), so as to improve the electron injection capability, however, lithium fluoride (LiF ) has its industrial problems, because the film thickness of lithium fluoride (LiF) must be controlled within 2 nanometers, so it is not easy to solve the problems of process stability and reproducibility

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