ORGANIC ELECTROLUMINESCENT ELEMENT AND NOVEL ALCOHOL-SOLUBLE PHOSPHORESCENT MATERIAL
申请人:Noto Mitsuharu
公开号:US20120261651A1
公开(公告)日:2012-10-18
Object of the present invention is to provide an organic electroluminescent element having an emissive layer that may be formed by wet process in the fabrication of the organic electroluminescence device with multi-layer structure and has excellent electron-injection property, electron-transfer property, durability and luminescent efficiency and a novel alcohol-soluble organic phosphorescent material that may be preferably applicable to the fabrication of the same. An organic electroluminescent element
1
has a plurality of laminated organic layers
4, 5, 6
sandwiched between anode
3
and cathode
7
. A hole transport layer
5
composed of organic compounds insoluble in alcohol solvent and an emissive layer
6
formed by a wet process so that it contacts with the hole transport layer
5
on the side facing with the cathode
7
contains host materials consisting of one or more phosphine oxide derivatives soluble in alcohol solvent and guest materials soluble in alcohol solvent which can be excited electrically to emit light.
triboluminescence efficiency of EuIII coordinationpolymer with triangularspacers under laser pulse irradiation (Nd:YAG, λ=1064 nm, pulse width=5 ns, pulse energy=0.1 mJ) is calculated to be 49 %. Characteristic triangular structure, high emission quantum yield, effective photosensitized energy transfer, and remarkable triboluminescence properties of EuIII coordinationpolymers are demonstrated for the first
Sheet integrated rare earth complex and use thereof
申请人:National University Corporation Hokkaido University
公开号:US10329480B2
公开(公告)日:2019-06-25
Provided are: a rare earth complex which has a novel structure, which exhibits compatibility with organic solvents and resins, and which exhibits excellent luminescent properties as a luminescent element; and a use thereof. This rare earth complex includes: a phosphine oxide compound represented by general formula (1); at least one rare earth ion selected from the group consisting of Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; and a ligand compound. In the rare earth complex, the coordination numbers of the ligand compound and the phosphine oxide compound represented by general formula (1) to the rare earth ion are 8-10, and a plurality of the phosphine oxide compounds represented by general formula (1) and a plurality of the rare earth ions are provided with a crosslinked structure.
THIN FILM FOR ORGANIC ELECTROLUMINESCENCE (EL) DEVICE AND METHOD FOR MANUFACTURING SAME
申请人:National University Corporation
Hokkaido University
公开号:EP3043397A1
公开(公告)日:2016-07-13
The present invention relates to a novel method for manufacturing a thin film of a rare earth complex polymer with low solubility in an organic solvent and further relates to a novel organic EL device comprising a thin film of a rare earth complex polymer obtained using this method, the thin film used as a light-emitting layer. Disclosed are the following: a method for manufacturing a rare earth complex polymer thin film that comprises a step (1) in which a micelle-containing solvent (A) that comprises a rare-earth complex and a ferrocenyl surfactant and a micelle-containing solvent (B) that comprises a polydentate ligand and a ferrocenyl surfactant are mixed to form a mixed micelle-containing solvent, and a step (2) in which electrolysis is performed using the mixed micelle-containing solvent as an electrolyte, and formed on a positive electrode surface is a thin film of a rare earth complex polymer that comprises the rare earth complex and polydentate ligand; a light-emitting element that comprises an electrode and the rare-earth complex polymer thin film formed on the electrode surface; and an organic EL device that comprises an electron- and hole-transport layer on at least part of the surface of the light-emitting element and the rare-earth complex polymer thin film of the light-emitting element, and further comprises an electrode on the electron- and hole-transport layer.