Organometallic Complex, and Light-Emitting Element, Light-Emitting Device and Electronic- Device Using the Organometallic Complex
申请人:Inoue Hideko
公开号:US20090015143A1
公开(公告)日:2009-01-15
It is an object of the present invention to provide an organometallic complex which can increase recombination efficiency of electrons and holes. One aspect of the present invention is an organometallic complex having a structure represented by a general formula (1), wherein each of R
1
and R
2
is any of a halogen group, a —CF
3
group, a cyano group, and an alkoxycarbonyl group, each of R
3
and R
4
is any of hydrogen and an alkyl group having 1 to 4 carbon atoms, and M is an element that belongs to Group 9 or 10 of the periodic table.
Light emitting device and electronic appliance using the same
申请人:Ohsawa Nobuharu
公开号:US20060263636A1
公开(公告)日:2006-11-23
The light emitting element includes a first electrode and a second electrode, between which a light emitting layer, a hole transporting layer provide in contact with the light emitting layer, an electron transporting layer provided in contact with the light emitting layer, and a mixed layer provided between the electron transporting layer and the second electrode. The mixed layer includes an electron transporting substance and a substance showing an electron donating property with respect to the electron transporting substance. The light emitting layer includes an organometallic complex represented in General Formula (1) and a host. R
1
and R
2
each represent an electron-withdrawing substituent group. R
3
and R
4
each represent any of hydrogen or an alkyl group having 1 to 4 carbon atoms. L represents any of a monoanionic ligand having a beta-diketone structure, a monoanionic bidentate chelating ligand having a carboxyl group, or a monoanionic bidentate chelating ligand having a phenolic hydroxyl group.
Light-Emitting Device and Electronic Appliance Using the Same
申请人:Semiconductor Energy Laboratory Co., Ltd.
公开号:US20160155960A1
公开(公告)日:2016-06-02
The light emitting element includes a first electrode and a second electrode, between which a light emitting layer, a hole transporting layer provide in contact with the light emitting layer, an electron transporting layer provided in contact with the light emitting layer, and a mixed layer provided between the electron transporting layer and the second electrode. The mixed layer includes an electron transporting substance and a substance showing an electron donating property with respect to the electron transporting substance. The light emitting layer includes an organometallic complex represented in General Formula (1) and a host. R
1
and R
2
each represent an electron-withdrawing substituent group. R
3
and R
4
each represent any of hydrogen or an alkyl group having 1 to 4 carbon atoms. L represents any of a monoanionic ligand having a beta-diketone structure, a monoanionic bidentate chelating ligand having a carboxyl group, or a monoanionic bidentate chelating ligand having a phenolic hydroxyl group.