The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2025
Filed:
Aug. 02, 2024
Zhejiang University of Technology, Hangzhou, CN;
Zhejiang Huaxian Photoelectricity Technology Co., Ltd, Jiaxing, CN;
Guijie Li, Hangzhou, CN;
Qingshan Chu, Hangzhou, CN;
Yuanbin She, Hangzhou, CN;
Jieying Tong, Hangzhou, CN;
Yunqi Lu, Hangzhou, CN;
Xiaoyu Zhao, Jiaxing, CN;
ZHEJIANG UNIVERSITY OF TECHNOLOGY, Hangzhou, CN;
Abstract
The present invention is in the field of organic electroluminescence, and specifically relates to a fused ring carbazole tetradentate metal platinum (II) complex and use thereof. In the present invention, a tetradentate metal platinum (II) complex phosphorescent material is obtained by introducing a five-membered heterocyclic system such as benzofuran or benzothiophene at the 5, 6-positions of carbazole. Increasing the ratio of the local state (LE) in the excited triplet state of the cyclic tetradentate platinum (II) complex leads to a lower shoulder peak, which improves the luminescence color purity of the materials, which in turn increases device lifetime. The materials provided by the present invention all have good chemical stability and thermal stability and are easy to fabricate an evaporation-type OLED device.