公开(公告)号：US11411186B2

公开(公告)日：2022-08-09

申请号：US16587039

申请日：2019-09-29

Applicant: WuHan TianMa Micro-Electronics Co., Ltd.

Inventor： Longxin Pan ,  Zhengchuan Zhang ,  Fang Yuan ,  Kun Wang ,  Peng Wang

IPC: H01L51/00 ,  C07F5/02 ,  H01L51/42 ,  H01L51/50

Abstract: A boron heterocyclic compound has a structure represented by Formula (I): in which L represents a single bond, a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted anthryl, and D is mainly selected from carbazolyl and derivative groups thereof, acridinyl and derivative groups thereof, or diarylamino and derivative groups thereof. In the boron heterocyclic compound, an acceptor unit is bonded through a boron heterocyclic SP3 linking moiety, which shortens the conjugation length, increases the energy level, and also further improves the thermodynamic stability of the molecule. In addition, the short conjugate axis reduces intramolecular charge transfer and narrows luminescence spectrum to some extent. The compound can be used as a TADF material. Since the light-emitting layer of the light-emitting device does not contain noble metals, the cost thereof can be greatly reduced.

公开(公告)号：US20200028086A1

公开(公告)日：2020-01-23

申请号：US16587039

申请日：2019-09-29

Applicant: WuHan TianMa Micro-Electronics Co., Ltd.

Inventor： Longxin Pan ,  Zhengchuan Zhang ,  Fang Yuan ,  Kun Wang ,  Peng Wang

IPC: H01L51/00 ,  H01L51/42 ,  C07F5/02

Abstract: A boron heterocyclic compound has a structure represented by Formula (I): in which L represents a single bond, a substituted or unsubstituted phenyl, a substituted or unsubstituted naphthyl, a substituted or unsubstituted anthryl, and D is mainly selected from carbazolyl and derivative groups thereof, acridinyl and derivative groups thereof, or diarylamino and derivative groups thereof. In the boron heterocyclic compound, an acceptor unit is bonded through a boron heterocyclic SP3 linking moiety, which shortens the conjugation length, increases the energy level, and also further improves the thermodynamic stability of the molecule. In addition, the short conjugate axis reduces intramolecular charge transfer and narrows luminescence spectrum to some extent. The compound can be used as a TADF material. Since the light-emitting layer of the light-emitting device does not contain noble metals, the cost thereof can be greatly reduced.