A boron-nitrogen compound, a preparation method and application thereof

By preparing and applying boron-nitrogen compounds with specific structures, the problem of the wide spectrum of TADF luminescent materials was solved, enabling narrow-spectrum emission of organic electroluminescent devices, improving color purity, and making them suitable for the display field.

CN116120351BActive Publication Date: 2026-08-25JIHUA HENGYE (FOSHAN) ELECTRONIC MATERIALS CO LTD
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Patent Information

Application Number
CN202211082395.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-06
Publication Date
2026-08-25
Estimated Expiration
2042-09-06

AI Technical Summary

Technical Problem

Existing TADF luminescent materials have a relatively broad spectrum, which makes it difficult to meet the high color purity requirements of organic electroluminescent devices in the display field.

Method used

A boron-nitrogen compound with a specific structure is provided, which can achieve narrow-spectrum emission by controlling the emission peak position of its isomers, and can be used as the light-emitting layer of an organic electroluminescent device.

Benefits of technology

Narrow-spectrum TADF emission of organic electroluminescent devices was achieved, improving color purity and making it suitable for display applications.

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Abstract

The present application provides a boron-nitrogen compound, a preparation method and application thereof, the boron-nitrogen compound has a narrow spectrum, and is used as a narrow spectrum light emitting material to prepare a light emitting layer of an organic electroluminescent device, so that the organic electroluminescent device prepared by the boron-nitrogen compound realizes narrow spectrum TADF emission, and makes the electroluminescent external quantum efficiency of the device as high as more than 35%.
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