公开(公告)号：US12004418B2

公开(公告)日：2024-06-04

申请号：US17432445

申请日：2021-02-03

Applicant: BOE Technology Group Co., Ltd.

Inventor： Haizheng Zhong ,  Dengbao Han ,  Chenhui Wang ,  Shuai Chang ,  Yang Liu ,  Xiang Miao

IPC: H10K85/50 ,  C09K11/06 ,  H10K71/10 ,  H10K50/11

CPC classification number: H10K85/50 ,  C09K11/06 ,  H10K71/10 ,  C09K2211/188 ,  H10K50/11

Abstract: The disclosure relates to the technical field of display, in particular to a luminescent film, a preparation method thereof, and an electroluminescent device. The luminescent film comprises: a crystallized blue-light perovskite material, and halogenated amine ligand materials grafted on the crystallized blue-light perovskite material, wherein the crystallized blue-light perovskite material comprises 3D perovskite nano-crystals; and the halogenated amine ligand materials comprise a first halogenated amine ligand material and a second halogenated amine ligand material, and the first halogenated amine ligand material is different from the second halogenated amine ligand material. The disclosure is suitable for manufacturing luminescent films and electroluminescent devices.