摘要:
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 Ωm.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.