公开(公告)号：US20250024698A1

公开(公告)日：2025-01-16

申请号：US18574791

申请日：2022-08-01

Applicant: HODOGAYA CHEMICAL CO., LTD. ,  SFC CO., LTD.

Inventor： Junichi IZUMIDA ,  Sang-Won KO ,  Bong-Hyang LEE ,  Jung-Ho RYU ,  Jin-ho LEE ,  Kouki KASE ,  Shuichi HAYASHI ,  Se-Jin LEE ,  Tae-Jung YU ,  Young-Tae CHOI ,  Sung-Hoon JOO ,  Byung-Sun YANG ,  Ji-Hwan KIM ,  Bong-Ki SHIN

IPC: H10K50/15 ,  H10K50/12 ,  H10K85/60

Abstract: An object of the present invention is to provide a material for organic EL elements, the material being excellent in hole injecting/transporting performance, electron-blocking capability, stability in the form of a thin film, and durability. Another object of the present invention is to provide an organic EL element having high efficiency, a low driving voltage, and a long lifespan, by combining the aforementioned material with various materials for organic EL elements, the materials being excellent in hole/electron injecting/transporting performance, electron-blocking capability, stability in the form of a thin film, and durability, such that the properties of the individual materials can be effectively exhibited. Focusing on the finding that a triarylamine compound having a specific structure is excellent in hole injecting/transporting capability, stability in the form of a thin film, and durability, a specific arylamine compound was selected and used as a material for a hole-transporting layer to produce an organic EL element, and thus, the present invention has been accomplished.