A light-emitting material for developing an organic EL device, which has the formula �1! or �2! recited in claims, and an organic EL device having layers thereof, the organic EL device having a high light emission brightness and a long life of light emission.
A light-emitting material of the following general formula �1! for an organic electroluminescence device, ##STR1## wherein each of A.sup.1 to A.sup.4 is a substituted or unsubstituted aryl group having 6 to 16 carbon atoms, and each of R.sup.1 to R.sup.8 is independently a hydrogen atom, a halogen a ...
A light-emitting material which serves to emit light having a high brightness and is almost free of deterioration in light emission, and an organic EL device for which the light-emitting material is adapted, the material having the formula ,
A light-emitting material of the following general formula  for an organic electroluminescence device,
This invention provides an optical semiconductor material comprising: (1) a noncrystalline titanium phthalocyanine compound which does not show substantial X-ray diffraction peak in X-ray diffraction chart, (2) a pseudo-noncrystalline titanium phthalocyanine compound which shows broad X-ray diffract ...
Hole-transporting materials of the following formula (1) have excellent hole-transporting capability and excellent durability,
A hole-injecting material for an organic EL device, having excellent hole-injecting capability and durability and having the formula [I], [II] or [III] specified in claim 1, and an organic electroluminescence device obtained by forming either a light-emitting layer or a plurality of organic compound ...
A hole-transporting material having excellent hole transportation capability and sufficient durability, used in an organic EL device and an electrophotographic photoreceptor, the hole-transporting material having the general formula specified in claim 1.
A hole-transport material having excellent hole-transport capability and durability, suitable for use in an organic EL device and as an organic photoconductive material, has the formula (1).
A hole-injecting material for an organic EL device, having excellent hole-injecting capability and durability and having the formula [I], [II] or [III] specified in claim