摘要:
Biphenyl derivatives having four substituents at meta positions of biphenyl structure, which is a core molecular structure, and organic electroluminescent devices using the biphenyl derivatives. The biphenyl derivatives are phosphorescent host compounds having amorphous structures and have excellent thermal stability and high solubility in general organic solvents, is easily to use for solution (or wet) process, and can easily energy-transfer to a metal complex used as dopant. The biphenyl derivatives also can be used as blue host materials of phosphorescent emission layer, hole transporting materials, or a hole injecting materials of an organic electroluminescent device.
摘要:
A cyclometalated transition metal complex emitting phosphorescence of high efficiency and an organic electroluminescent display device employing the same are provided. The cyclometalated transition metal complex can be employed in an organic film of an organic electroluminescent display device, can emit light at a wavelength range of 400 nm to 650 nm, and can emit white light as well when used with a green light emitting material and a red light emitting material.
摘要:
Silyl-substituted cyclometalated transition metal complexes have good thermal stability and enabling highly efficient phospholuminescence and an organic electroluminescent device may use the Silyl-substituted cyclometalated transition metal complexes. The transition metal complexes, which are suitably used for forming an organic layer of the organic electroluminescent device, can emit light in the wavelength range of 400-650 nm, and induce white electroluminescence when combined with green or red luminescent materials.