Light-Emitting Element, Light-Emitting Device, Display Device, Lighting Device, and Electonic Device
申请人:Ohsawa Nobuharu
公开号:US20130009139A1
公开(公告)日:2013-01-10
A light-emitting element is disclosed where a host material and a hole-transport material each consist of a carbazole skeleton and another skeleton other than the carbazole skeleton. Both the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) of the hole-transport material are distributed over the carbazole skeleton, while the HOMO of the host material is distributed over the carbazole skeleton and the LUMO thereof is distributed over the skeleton other than the carbazole skeleton. This combination of the hole-transport material and the host material allows the fabrication of a light-emitting element with high emission efficiency and low driving voltage.
公开了一种发光元件,其中主体材料和空穴传输材料均由咔唑骨架和咔唑骨架以外的另一种骨架组成。空穴传输材料的最高占据分子轨道(HOMO)和最低未占据分子轨道(LUMO)均分布在咔唑骨架上,而主体材料的HOMO分布在咔唑骨架上,其LUMO分布在咔唑骨架以外的骨架上。这种空穴传输材料和主体材料的组合使得可以制造出发光效率高、驱动电压低的发光元件。