Abstract: The present disclosure provides a light-emitting apparatus including a plurality of types of light-emitting pixels, each of the light-emitting pixels including a reflective electrode, an electrode-protective layer, an organic compound layer containing a light-emitting layer, and a light-output electrode in this order and having a resonator structure, wherein at least one type of the plurality of types of light-emitting pixels is a light-emitting pixel having a greater interference order than other types of light-emitting pixels, and the electrode-protective layer of the light-emitting pixel having the greater interference order has a greater layer thickness than the electrode-protective layers of the other types of light-emitting pixels.

Abstract: A light-emitting device includes a plurality of organic EL elements. Each of the organic EL elements includes a reflection electrode, a hole transport region, an electron-trapping luminescent layer, and a light extraction electrode in this order. The hole transport region has a sheet resistance of 4.0×107 ?/sq. or more at a current of 0.1 nA/pixel, and the total thickness of the hole transport region and the electron-trapping luminescent layer is equivalent to an optical path length enabling emission from the electron-trapping luminescent layer to be enhanced.

Abstract: The present disclosure provides a photoelectric conversion element including a lower electrode, a photoelectric conversion layer, and an upper electrode in this order; a voltage is applied between the lower electrode and the upper electrode; the photoelectric conversion layer contains a first organic compound and a second organic compound; the first organic compound has a lower oxidation potential than the second organic compound, and ?E represented by the following formula (A) satisfies the following formula (B); where ?E=oxidation potential of first organic compound?reduction potential of second organic compound (A) ?E?1.

Abstract: Provided is an organic light-emitting device capable of outputting light with high efficiency and high luminance. The organic light-emitting device includes an anode, a cathode, an emission layer placed between the anode and the cathode, and an organic compound layer placed between the anode and the emission layer, in which the organic compound layer contains the following compound A and compound B: [Compound A] an organic compound free of a nitrogen atom and a metal atom, the compound having SP2 carbon atoms and SP3 carbon atoms, and having a ratio of the number of the SP3 carbon atoms to the number of the SP2 carbon atoms of 40% or more; and [Compound B] a compound having a tertiary amine structure.

Abstract: Provided is an organic light emitting element having high light emitting efficiency. The organic light emitting element includes: an anode; a cathode; an emission layer placed between the anode and the cathode; and a hole transport layer formed between the anode and the emission layer, in which the hole transport layer contains a siloxane compound and a compound having a tertiary arylamine structure; and number of SP2 carbon atoms in the hole transport layer is ten times or less number of silicon atoms in the hole transport layer.

Abstract: Provided is an organic light-emitting element for emitting white light in which an optical distance L1 between a first emission layer (52) and a reflective electrode (80) satisfies Expression (a), and an optical distance L2 between a second emission layer (72) and the reflective electrode (80) satisfies Expression (b): (?1/8)×(3?(2?1/?))<L1<(?1/8)×(5?(2?1/?))??(a); and (?2/8)×(?(2?2/?)?1)<L2<(?2/8)×(?(2?2/?)+1)??(b), and in which a refractive index of a first charge transport layer (51) formed between a light extraction electrode (4) and the first emission layer (52) at the wavelength ?1 is 1.70 or less.

Abstract: Provided is an organic light emitting element having high light emitting efficiency. The organic light emitting element includes: an anode; a cathode; an emission layer placed between the anode and the cathode; and a hole transport layer formed between the anode and the emission layer, in which the hole transport layer contains a siloxane compound and a compound having a tertiary arylamine structure; and number of SP2 carbon atoms in the hole transport layer is ten times or less number of silicon atoms in the hole transport layer.

Abstract: A light emitting apparatus includes: a pixel circuit formed over a substrate; a partition including a plurality of openings formed over the substrate with the pixel circuit; and a plurality of pixels defined by the plurality of the openings, wherein the pixel includes a light emitting element including a lower electrode connected to the pixel circuit and an organic compound layer formed over the lower electrode, the plurality of the pixels is arranged in a line in a longitudinal direction of the substrate, the pixel circuit includes: a transistor including a gate electrode and source/drain electrodes; a first interconnection including the gate electrode; and a second interconnection including the source/drain electrodes, and the second interconnection and an interconnection formed of a same layer as the second interconnection are separated from the organic compound layer in planar view from a direction perpendicular to a main surface of the substrate.

Abstract: Provided is an organic light-emitting device capable of outputting light with high efficiency and high luminance. The organic light-emitting device includes an anode, a cathode, an emission layer placed between the anode and the cathode, and an organic compound layer placed between the anode and the emission layer, in which the organic compound layer contains the following compound A and compound B: [Compound A] an organic compound free of a nitrogen atom and a metal atom, the compound having SP2 carbon atoms and SP3 carbon atoms, and having a ratio of the number of the SP3 carbon atoms to the number of the SP2 carbon atoms of 40% or more; and [Compound B] a compound having a tertiary amine structure.

Abstract: Provided are organic electroluminescence elements that suppress SP loss even in a strong cavity satisfying a ?/4 interference condition, thereby being improved in luminous efficiency. The organic electroluminescence elements emit light having a peak wavelength of 440 nm or more to 470 nm or less, in which a wavenumber difference ?k (Re) between surface plasmons generated at respective reflecting electrode and transparent electrode falls within a specific range.

Abstract: Provided is an organic EL element in which emission efficiency is improved by suppressing a loss of excitation energy by a surface plasmon generated on an electrode surface. A hole transport layer is formed of a material having a refractive index of 1.20 or more and 1.65 or less at a maximum peak wavelength of a spectrum of light emitted by a light-emitting layer.

Abstract: Provided are organic electroluminescence elements that suppress SP loss even in a strong cavity satisfying a ?/4 interference condition, thereby being improved in luminous efficiency. The organic electroluminescence elements emit light having a peak wavelength of 440 nm or more to 470 nm or less, in which a wavenumber difference ?k (Re) between surface plasmons generated at respective reflecting electrode and transparent electrode falls within a specific range.

Abstract: Provided is an organic EL element in which emission efficiency is improved by suppressing a loss of excitation energy by a surface plasmon generated on an electrode surface. A hole transport layer is formed of a material having a refractive index of 1.20 or more and 1.65 or less at a maximum peak wavelength of a spectrum of light emitted by a light-emitting layer.

Abstract: A display device includes a first organic electroluminescent element and a second organic electroluminescent element. The first and second organic electroluminescent elements have different luminescent colors. The first and second organic electroluminescent elements each include, in series, a first electrode, a first charge transport layer, a second charge transport layer, a light-emitting layer, and a second electrode. The first charge transport layer is common to the first and second organic electroluminescent elements. The second charge transport layer of the first organic electroluminescent element is different in thickness from the second charge transport layer of the second organic electroluminescent element. The concentration of a dopant material contained in the first charge transport layer is less than that of the second charge transport layer.

Abstract: An organic electroluminescent element includes a first electrode, an organic compound film including a plurality of layers that include an emissive layer, a second electrode, a protective layer, and a buffer layer formed by an evaporation method between the second electrode and the protective layer, light emitted from the emissive layer emerging from the second electrode side, in which the second electrode is formed of a metal film having a thickness of 5 nm to 20 nm, a distance between a surface of the emissive layer adjacent to the first electrode and a surface of the second electrode adjacent to the organic compound film is in the range of 55 nm to 90 nm, and the protective layer is formed by a sputtering method or a plasma-enhanced chemical vapor deposition method.

Abstract: A display device includes a first organic electroluminescent element and a second organic electroluminescent element. The first and second organic electroluminescent elements have different luminescent colors. The first and second organic electroluminescent elements each include, in series, a first electrode, a first charge transport layer, a second charge transport layer, a light-emitting layer, and a second electrode. The first charge transport layer is common to the first and second organic electroluminescent elements. The second charge transport layer of the first organic electroluminescent element is different in thickness from the second charge transport layer of the second organic electroluminescent element. The concentration of a dopant material contained in the first charge transport layer is less than that of the second charge transport layer.

Abstract: In a magnetic recording medium comprising a magnetic layer of a ferromagnetic powder dispersed in a resin binder and a nonmagnetic substrate for the layer, the magnetic layer contains zine aluminate (ZnAl.sub.2 O.sub.4) powder. The ferromagnetic powder is of chromium dioxide (CrO.sub.2) and the ZnAl.sub.2 O.sub.4 content in the magnetic layer is 0.01-1 wt % on the basis of the weight of the ferromagnetic powder.

Abstract: A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer thereon containing a ferromagnetic CrO.sub.2 powder dispersed in a resin binder. The magnetic layer contains 0.01-1.0 wt % of Al.sub.2 O.sub.3 powder on the basis of the CrO.sub.2 powder so as to improve wear of magnetic heads.

Abstract: In a magnetic recording medium having a magnetic recording coat formed on one side of a base and a back coat on the other side, the back coat consists of a dispersion in a binder of an inorgainc pigment powder having an average particle diameter of 0.2 to 0.5 .mu.m and a Mohs hardness of not greater than 6. The binder consists of a specific copolymer, a rubber-like binder, and a polyisocyanate ingredient. The copolymer consists of vinyl chloride, a vinyl alkyl carboxylate, a monomer copolymerizable with vinyl chloride, and a saponified vinyl alkyl carboxylate and has an OH/CH absorption ratio as determined from its infrared absorption spectrum in the range of 0.2 to 0.7.

Abstract: A magnetic recording medium comprises a substrate coated with a magnetic layer comprising a magnetic powder and a fine titanium oxide powder having a particle diameter of at least 0.4.mu. and at least one other fine hard non-magnetic powder.