摘要:
Novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing. Additionally, methods are provided for making homoleptic Ir (III) compounds which may contain a twisted aryl.
摘要:
Novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing. Additionally, methods are provided for making homoleptic Ir (III) compounds which may contain a twisted aryl.
摘要:
A compound having an ancillary ligand L1 having the formula: Formula I is disclosed. The ligand L1 is coordinated to a metal M having an atomic number greater than 40, and two adjacent substituents are optionally joined to form into a ring. Such compound is suitable for use as emitters in organic light emitting devices.
摘要:
Organic light-emitting devices having a multi-component organic electroluminescent layer. The organic electroluminescent layer comprises a phosphorescent dopant and a host material that is a mixture of at least three different compounds: a wide band gap host compound, an electron-transporting host compound, and a hole-transporting host compound. Use of such a multi-component organic electroluminescent layer may improve device efficiency and lifetime.
摘要:
Novel iridium complexes containing phenylpyridine and pyridyl aza-benzo fused ligands are described. These complexes are useful as light emitters when incorporated into OLEDs.
摘要:
Organic light-emitting devices having a multi-component organic electroluminescent layer. The organic electroluminescent layer comprises a phosphorescent dopant and a host material that is a mixture of at least three different compounds: a wide band gap host compound, an electron-transporting host compound, and a hole-transporting host compound. Use of such a multi-component organic electroluminescent layer may improve device efficiency and lifetime.
摘要:
An organic light emitting device comprising, an anode, a cathode, and an emissive layer, located between the anode and the cathode, of a host compound, a first compound capable of phosphorescent emission at room temperature, and a second compound capable of phosphorescent emission at room temperature is provided. At least 95 percent of emission from the device is produced from the second compound when an appropriate voltage is applied across the anode and cathode.
摘要:
An organic light emitting device is provided. The device includes an anode and a cathode. A first organic layer is disposed between the anode and the cathode. The first organic layer is an emissive layer that includes a first organic emitting material. The device also includes a second organic layer disposed between the anode and the first organic layer. The second organic layer is a non-emissive layer. The second organic layer includes an organic small molecule hole transport material having a concentration of 50 to 99 wt %, and an organic small molecule electron transport material having a concentration of 0.1 to 5 wt %. Other materials may be present.
摘要:
A first device is provided. The first device includes an anode, a cathode and an emissive layer disposed between the anode and the cathode. The emissive layer includes a first organic emitting material having a first peak wavelength and a second organic emitting material having a second peak wavelength. The emissive layer has a homogenous composition. The second peak wavelength is between 0 and 40 nm greater than the first peak wavelength.
摘要:
A first device is provided. The first device includes an anode, a cathode and an emissive layer disposed between the anode and the cathode. The emissive layer includes a first organic emitting material having a first peak wavelength and a second organic emitting material having a second peak wavelength. The emissive layer has a homogenous composition. The second peak wavelength is between 0 and 40 nm greater than the first peak wavelength.