Luminescent material, application thereof, and organic electroluminescent device containing luminescent material

Abstract

The invention relates to a novel compound, an application thereof, and an organic electroluminescent device containing the compound. The compound has a structure as shown in the following formula, wherein Y1 and Y2 are respectively N or B; X1, X2, X3 and X4 are respectively NR1 or BR2; Ra, Rb, Rc and Rd each independently represent a mono-substituent to maximally allowable substituents; and Ra, Rb, Rc and Rd are independently selected from hydrogen, deuterium, or one of the following substituted or unsubstituted groups: a C1-C36 chain alkyl group; a C3-C36 naphthenic group, a C1-C10 alkoxyl group, halogen, cyano, nitro, hydroxyl, silyl, amino, substituted or unsubstituted C6-C30 aryl amino, substituted or unsubstituted C3-C30 heteroaryl amino, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl. When the compound is used as a luminescent material in an OLED device, the compound has an excellent device performance and high stability. The inventionalso discloses an organic light-emitting device adopting the compound with the general formula.

Description

Technical field [0001] The present invention relates to the technical field of organic electroluminescence, in particular to a novel organic compound and its application, and an organic electroluminescence device containing the compound. Background technique [0002] Organic Light Emission Diodes (OLED: Organic Light Emission Diodes) are a kind of sandwich-like devices, including positive and negative electrode film layers and organic functional material layers sandwiched between the electrode film layers. Because OLED devices have the advantages of high brightness, fast response, wide viewing angle, simple process, and flexibility, they have attracted much attention in the field of new display technology and new lighting technology. At present, this technology has been widely used in the display panels of new lighting fixtures, smart phones and tablet computers, and will further expand to the application fields of large-size display products such as TVs. It is a new type of disp...

AI Technical Summary

Problems solved by technology

[0004] In the selection of OLED materials, singlet light-emitting fluorescent materials have a long life and low price, but low efficiency; triplet light-emitting phosphorescent materials have high efficiency, but are expensive, and the life of blue light materials has not been solved.

However, due to the peripheral substituents on S 1 The effect of energy level is very small, that is, it is difficult to control the luminous color of the material, and its light color has always been limited to the blue-dark blue region, which greatly limits the application of MR-TADF materials in the fields of high-resolution display, full-color display and white lighting. further application of

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