Abstract: A phosphor includes semiconductor nanoparticles formed of compound semiconductor, and conductive transparent compounds. The semiconductor nanoparticles may be dispersed in or on the conductive transparent compounds. The resistivity of the conductive transparent compounds is preferably less than or equal to 10 ?cm.

Abstract: A fluorescent material-sealed sheet includes a plurality of fluorescent sections, an upper sealing section, and a lower sealing section, the plurality of fluorescent sections being sealed by the upper sealing section and the lower sealing section.

Abstract: A light emitting device is provided that includes a light emitting element emitting primary light, and a wavelength conversion portion provided on the light emitting element, absorbing a part of the primary light and emitting secondary light, in which the wavelength conversion portion is made of a plurality of resin layers including at least a first wavelength conversion portion made of a resin layer containing a rare earth-activated phosphor or a transition metal element-activated phosphor, and a second wavelength conversion portion made of a resin layer containing a nanocrystalline phosphor. The first wavelength conversion portion is disposed closer to the light emitting element than the second wavelength conversion portion is. According to the light emitting device, it becomes possible to prevent a substrate from discoloring due to reaction of a silver part of the light emitting device with a nanocrystalline phosphor, thereby preventing a decrease in light emitting efficiency.

Abstract: A light emitting apparatus includes a light emitting device emitting primary light and a wavelength conversion unit absorbing a part of the primary light to emit secondary light. The wavelength conversion unit includes a first wavelength conversion unit containing at least a nanocrystalline phosphor and a second wavelength conversion unit containing a rare-earth-activated phosphor or a transition-metal-element-activated phosphor. In the light emitting device, the first wavelength conversion unit and the second wavelength conversion unit are closely stacked in order.

Abstract: A light emitting device includes a light emitting element that emits primary light and a wavelength conversion unit that absorbs part of the primary light and emits secondary light. In the light emitting device, the wavelength conversion unit includes a plurality of types of phosphors that emit secondary light having wavelengths different from each other, and at least one of the phosphors is a covered phosphor covered with a surface film that reflects secondary light emitted from a phosphor other than the covered phosphor.

Abstract: An electrostatic generator includes a substrate, an electrode formed on or in a surface of the substrate, an electret film provided so as to be opposed to the electrode and an insulating film on an electrode side formed on a surface of the electrode on a side opposed to the electret film.

Abstract: A voltage conversion circuit with reduced power consumption can be used for a power supply device (100). The power supply device (100) is composed of a power supply circuit (3) including an alternating power supply (1) and a rectifying circuit (2); a voltage conversion circuit (6) including a plurality of capacitors (4) and a switching circuit (5); and a load circuit (7). The voltage conversion circuit (6) is connected between the power supply circuit (3) and the load circuit (7). The alternating power supply (1) is connected to a switching circuit (5) of the voltage conversion circuit (6) without having the rectifying circuit (2) in between. An output voltage (potential fluctuation: a potential difference generated in the signal waveform of the power supply voltage) from the alternating power supply (1) prior to rectification is applied to the switching circuit (5).

Abstract: A light emitting device includes a light emitting element that emits primary light and a wavelength conversion unit that absorbs part of the primary light and emits secondary light. In the light emitting device, the wavelength conversion unit includes a plurality of types of phosphors that emit secondary light having wavelengths different from each other, and at least one of the phosphors is a covered phosphor covered with a surface film that reflects secondary light emitted from a phosphor other than the covered phosphor.

Abstract: A vibration detection apparatus includes a vibrating device that generates an alternating voltage by vibration; a power storage part that stores power based on the alternating voltage generated by the vibrating device; and a counter circuit that counts the number of vibrations of the alternating voltage generated by the vibrating device.

Abstract: A solar cell comprises a p-type semiconductor layer, an n-type semiconductor layer, and a superlattice semiconductor layer interposed between the p-type semiconductor layer and the n-type semiconductor layer, wherein the superlattice semiconductor layer has a stacked structure in which quantum layers and barrier layers are stacked alternately and repeatedly, wherein the stacked structure is formed whereby a miniband is formed by a quantum level of the quantum layers on the side of a conduction band, wherein an energy level at a bottom of the miniband is lower than an energy level at a bottom of the conduction band of the barrier layers, and an energy level at a top of the miniband is higher than an energy level, which is lower than the energy level at the bottom of the conduction band of the barrier layers by an amount twice as much as thermal energy at room temperature.

Abstract: A power generating apparatus (100) is provided with first substrates (2b, 2c) whereupon a first electrode (3) is arranged on one surface; a second substrate (1a) which includes a second electrode (6) arranged to face a first electrode on the one surface side of the first substrate; and sliding mechanisms (10, 11, 12, 13 and 14) arranged at least on the one surface side or the other surface side of the first substrate. The sliding mechanism holds the first substrate so that the first substrate moves relatively to the second substrate in a second direction (X direction) while suppressing movement of the first substrate in a first direction (Z direction).

Abstract: An electrostatic operating apparatus (electrostatic induction generator) includes a first substrate having a first electrode and a second electrode and set in a state where the first electrode and the second electrode are electrically separated from each other at least on the substrate and a second substrate including an electret member, wherein the first substrate and the second substrate are so provided as to be opposed to each other at an interval and so formed as to be movable relatively with each other, and at least one of the first electrode and the second electrode is so formed as to be capacitively coupled with the electret member.

Abstract: A solar cell of the present invention comprises a p-type semiconductor layer, an n-type semiconductor layer and a superlattice semiconductor layer sandwiched between the p-type semiconductor layer and the n-type semiconductor layer, wherein the superlattice semiconductor layer has a superlattice structure in which barrier layers and quantum layers are stacked alternately and repeatedly, and has two or more intermediate energy levels where electrons optically excited from a valence band of the quantum layers or the barrier layers stay for a constant time, the intermediate energy levels being located between a top of the valence band of the barrier layers and a bottom of a conduction band of the barrier layers, and can achieve a high incident photon-to-current conversion efficiency.

Abstract: A solar cell of the present invention comprises a p-type semiconductor layer, an n-type semiconductor layer, and a superlattice semiconductor layer interposed between the p-type semiconductor layer and the n-type semiconductor layer, wherein the superlattice semiconductor layer has a superlattice structure in which barrier layers and quantum dot layers comprising quantum dots are stacked alternately and repeatedly, and is formed so that the bandgaps of the quantum dots are gradually widened with increasing distance from a side of the p-type semiconductor layer and decreasing distance to a side of the n-type semiconductor layer.

Abstract: A phosphor includes semiconductor nanoparticles formed of compound semiconductor, and conductive transparent compounds. The semiconductor nanoparticles may be dispersed in or on the conductive transparent compounds. The resistivity of the conductive transparent compounds is preferably less than or equal to 10 ?m.

Abstract: A light emitting apparatus includes a light emitting device emitting primary light and a wavelength conversion unit absorbing a part of the primary light to emit secondary light. The wavelength conversion unit includes a first wavelength conversion unit containing at least a nanocrystalline phosphor and a second wavelength conversion unit containing a rare-earth-activated phosphor or a transition-metal-element-activated phosphor. In the light emitting device, the first wavelength conversion unit and the second wavelength conversion unit are closely stacked in order.

Abstract: A power generating apparatus (100) is provided with first substrates (2b, 2c) whereupon a first electrode (3) is arranged on one surface; a second substrate (1a) which includes a second electrode (6) arranged to face a first electrode on the one surface side of the first substrate; and sliding mechanisms (10, 11, 12, 13 and 14) arranged at least on the one surface side or the other surface side of the first substrate. The sliding mechanism holds the first substrate so that the first substrate moves relatively to the second substrate in a second direction (X direction) while suppressing movement of the first substrate in a first direction (Z direction).

Abstract: A machine tool is provided with a machining unit, a base plate, an intermediate plate, a lower plate, and a pair of upper plates. The machining unit is fixed to a frame. The base plate is movable along a rail on the frame. The base plate moves a work piece toward and away from the machining unit. The intermediate plate is movable along the rail between the machining unit and the base plate. The intermediate plate pushes a reference plane of the work piece set on the base plate so that the work piece is positioned in a machining position. The lower plate is tiltably connected to the base plate and the upper plates are tiltably connected to the lower plate.

Abstract: An electrostatic induction power generator includes first and second substrates arranged to be opposed to each other, a third substrate arranged between the first and second substrates, first and second electrodes provided on both surfaces of the third substrate respectively, a third electrode provided on a surface of the first substrate; and a fourth electrode provided on a surface of the second substrate.

Abstract: An electrostatic induction generator requiring no electric power supply device and capable of being mounted on a printed board is obtained. This electrostatic induction generator includes a pair of first electrodes capable of storing charges, a pair of vibrating electrodes capable of vibrating in a first direction and a second direction different from the first direction, and charged with opposite charges due to charges stored in the pair of first electrodes respectively, and a second electrode for electrically connecting the pair of vibrating electrodes to each other in a case where the pair of vibrating electrodes are at prescribed positions.