摘要:
An organic EL device exhibiting an improved luminescence efficiency and having a structure in which an inorganic nondegenerate semiconductor layer (12) made of an amorphous In-Zn-Al-O material having a band gap energy of 2.9 eV, an organic luminescent layer (14), and a counter electrode (16) are provided in order on a lower electrode (10).
摘要:
Provided is an organic electroluminescence device which includes an organic thin film layer composed of one or more layers including at least one light emitting layer, the organic thin film layer being interposed between a cathode and an anode, in which at least one layer of the organic thin layer contains an asymmetric fluorene-based derivative compound of a specific structural formula and an amine compound of a specific structural formula. This organic electroluminescence device has excellent heat resistance and a long lifetime and can emit any of blue, green, and red lights at a high luminous efficiency.
摘要:
A sputtering target which is formed of a sintered body including an oxide main components of which are In and Sm. A sputtering target in which a sintered body of an oxide including In and Sm as main components is doped with at least one element with an atomic valency of positive tetravalency or higher in an amount of 20 at.% or less relative to the total sum of all cation elements.
摘要:
Materials for organic electroluminescence devices and organic electroluminescence devices which exhibit high efficiency of light emission and have a long life and excellent heat resistance, novel compounds and processes for producing the materials for organic electroluminescence devices are provided. The material for organic electroluminescence devices is represented by following general formula [1]:
wherein A represents a substituted or unsubstituted arylene group having 22 to 60 carbon atoms, X 1 to X 4 each independently represent a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, X 1 and X 2 may be bonded to each other, X 3 and X 4 may be bonded to each other, Y 1 to Y 4 each independently represent an organic group represented by general formula [2], a to d each represent an integer of 0 to 2 and, when the arylene group represented by A has 26 or less carbon atoms, a+b+c+d>0 and the arylene group does not contain two or more anthracene nucleus; general formula [2] being:
wherein R 1 to R 4 each independently represent hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, cyano group or form a triple bond by a linkage of R 1 and R 2 or R 3 and R 4 , Z represents a substituted or unsubstituted aryl group having 6 to 20 carbon atoms and n represents 0 or 1.
摘要:
An organic electroluminescent device (1) including: a transparent electrode (12); a counter electrode (14) opposite to the transparent electrode (12); and one or more mutilayered structures between the transparent electrode (12) and the counter electrode (14), the structure including two organic emitting layers (20) and (22) and an intermediate conductive layer (30) between the organic emitting layers (20) and (22), the refractive index n a of the intermediate conductive layer (30) being different from the refractive index n b of at least one of the organic emitting layers by 0.25 or less, the intermediate conductive layer (30) containing an oxide containing one or more types of rare earth elements.
摘要:
An organic electroluminescence device which exhibits an excellent purity of color and a high efficiency of light emission, has a long life and emits reddish light and a novel compound having these characteristics are provided. The organic electroluminescence device comprises an organic layer disposed between at least one pair of electrodes, wherein the organic layer comprises a compound having a fluoranthene skeleton structure substituted at least with an amine group or an alkenyl group.