A new benzimidazole/carbazole hybrid bipolar material for highly efficient deep-blue electrofluorescence, yellow–green electrophosphorescence, and two-color-based white OLEDs
An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer comprising a phosphorescent emitter represented by Formula (I):
L
n
M (I)
wherein each L is a cyclometallated ligand with at least one containing a coumarin group, M is Ir or Pt, and n is 3 when M is Ir and 2 when M is Pt. The invention also comprised the compound of formula (I).
OLED DEVICE EMPLOYING ALKALI METAL CLUSTER COMPOUNDS
申请人:Begley William J.
公开号:US20090142618A1
公开(公告)日:2009-06-04
The invention provides an OLED device containing certain alkali metal cluster compounds with mixed ligands, such compounds, and methods of making them. In particular, the cluster compound is a neutrally charged mixed cluster compound comprising first and second subunits with the first subunit comprising an alkali metal salt of a nitrogen containing a heterocyclic ligand bearing a anionic hydroxy group and the second subunit consisting of an organic alkali metal salt different than the first subunit.
OLED DEVICE WITH CYCLOBUTENE ELECTRON INJECTION MATERIALS
申请人:Begley William J.
公开号:US20100141122A1
公开(公告)日:2010-06-10
An OLED device including a cathode, an anode, and having therebetween a light-emitting layer and further comprising a first layer between the light-emitting layer and the cathode containing a cyclobutene compound comprising a cyclobutene nucleus substituted in the 1-position with a five- or six-membered heteroaromatic ring group containing at least one trivalent nitrogen atom; substituted in the 2-position with an aromatic ring group; and substituted with a first methylene group in the 3-position and a second methylene group in the 4-position, provided said first and second methylene groups are further disubstituted in the 1′,1′-positions and the 1″,1″-positions with independently selected aromatic groups.
Organometallic materials and electroluminescent devices
申请人:Huo Shouquan
公开号:US20060134461A1
公开(公告)日:2006-06-22
An electroluminescent device comprises a light-emitting layer containing an organometallic compound comprising a metal and a ligand that coordinates to the metal through at least four bonds as represented by Formula (1) wherein at least one is a carbon-metal bond:
M
X)
n
(1)
wherein M represents a metal, X represents an independently selected atom, n≧4, at least one X is carbon, and all X are linked to form a multidentate ligand.
OLED DEVICE WITH FLUORANTHENE ELECTRON TRANSPORT MATERIALS
申请人:Begley William J.
公开号:US20090108735A1
公开(公告)日:2009-04-30
The invention provides an OLED device comprising a cathode, an anode, and having there between a light-emitting layer, further comprising, between the cathode and the light emitting layer, a non-luminescent electron transporting layer containing a compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus and desirably comprises still further an additional layer containing an organic alkali metal compound, located between the cathode and the electron transporting layer.
Devices of the invention provide improvement in features such as efficiency, drive voltage, and operational stability.