Preparation of three primary color combined white OLED devices using organic single crystal materials and preparation method thereof

Abstract

The invention discloses preparation of three primary color combined white OLED devices using organic single crystal materials and a preparation method thereof, belonging to the technical field of organic light emitting diode (OLED) device preparation. The invention uses an organic single crystal material as the main material of the light-emitting layer of the white OLED device; and the OLED devicewith high quality white light can be fabricated by combining A, B and C three primary colors through doping two guest molecules which can emit B color and C color respectively in the main material (emitting A color light). According to the invention, the main organic single crystal is dual-doped by two kinds of guest molecules with lights of different colors in the light-emitting layer, therefore, the spectral width of the device light is effectively broadened, and the quality of the white light is significantly improved; the mode of using single light-emitting layer with multi-doping is usedfor replacing the mode of using multiple light-emitting layer to obtain multi-primary color light combinations in the white light-emitting devices in the prior art, therefore, the device structure and processing technology are simplified.

Description

technical field [0001] The invention belongs to the technical field of preparation of organic light-emitting diode (OLED) devices, and specifically relates to the use of organic single crystal materials to combine three primary colors to obtain white light. In order to achieve the purpose of combining the three primary colors to make the device emit white light and improve the quality of white light. Background technique [0002] White OLED devices are an extremely important class of organic light-emitting diode devices, and have basic and extensive applications in the fields of solid-state lighting and flat panel display. At present, the main material used to prepare white light OLED devices, that is, the material of the light-emitting layer, is mainly an organic amorphous or polycrystalline light-emitting material. Due to the low degree of molecular order in these two types of materials, the high defect concentration in the material reduces the carrier mobility, which in ...

AI Technical Summary

Problems solved by technology

In the current white OLED devices made of organic single crystal materials, the combination of two primary colors is generally used, so there are existing technical difficulties such as limited emission spectrum width and low quality of white light.

Images