摘要:
An ultraviolet irradiation device having a simple structure without using a pn junction, which can efficiently utilize a surface plasmon polariton and can emit ultraviolet light of a specific wavelength at a high efficiency. The device has at least one semiconductor multilayer film element and an electron beam irradiation source which are provided in a container having an ultraviolet-ray transmitting window and is vacuum-sealed, wherein the film element has an active layer formed of InxAlyGa1-x-yN (wherein 0≦x≦1, 0≦y≦1, and x+y≦1) and having a single or multiple quantum well structure and a metal film formed on an upper surface of the active layer, composed of metal particles of aluminum or an aluminum alloy and having a nano-structure formed of the metal particles, wherein ultraviolet light is emitted to the outside through the transmitting window by irradiating the film element with electron beams from the irradiation source.
摘要翻译:一种紫外线照射装置,其具有简单的结构,不使用pn结,能够有效利用表面等离子体激元,能够高效地发射特定波长的紫外线。 该装置具有至少一个半导体多层膜元件和电子束照射源,它们设置在具有紫外线透射窗口的容器中,并被真空密封,其中该膜元件具有由In x Al y Ga 1-x-y N (其中0≦̸ x≦̸ 1,0和nlE; y≦̸ 1和x + y≦̸ 1)并且具有单个或多个量子阱结构和形成在有源层的上表面上的金属膜,由金属的铝 或铝合金,并且具有由金属颗粒形成的纳米结构,其中通过用来自照射源的电子束照射膜元件,紫外光通过透射窗口发射到外部。
摘要:
Provided is a compact ultraviolet irradiation apparatus which is capable of emitting ultraviolet radiation with high efficiency.This ultraviolet irradiation apparatus includes, in a vessel, a semiconductor multi-layered. film element and an electron beam irradiation source for irradiating the semiconductor multi-layered film element with an electron beam, the vessel being hermetically sealed to have a negative internal pressure and having an ultraviolet transmitting window. Furthermore, the semiconductor multi-layered film element includes an active layer having a single quantum well structure or a multi quantum well structure of InxAlyGa1-x-yN (0≦x
摘要翻译:提供一种能够高效率地发射紫外线的小型紫外线照射装置。 该紫外线照射装置在容器中包括多层的半导体。 膜元件和用于用电子束照射半导体多层膜元件的电子束照射源,容器被密封以具有负的内部压力并具有紫外线透过窗口。 此外,半导体多层膜元件包括具有单一量子阱结构或In x Al y Ga 1-x-y N(0&nlE; x <1,0
摘要:
Provided is a compact ultraviolet irradiation apparatus which is capable of emitting ultraviolet radiation with high efficiency.This ultraviolet irradiation apparatus includes, in a vessel, a semiconductor multi-layered film element and an electron beam irradiation source for irradiating the semiconductor multi-layered film element with an electron beam, the vessel being hermetically sealed to have a negative internal pressure and having an ultraviolet transmitting window. Furthermore, the semiconductor multi-layered film element includes an active layer having a single quantum well structure or a multi quantum well structure of InxAlyGa1-x-yN (0≦x
摘要翻译:提供一种能够高效率地发射紫外线的小型紫外线照射装置。 该紫外线照射装置在容器中包括用电子束照射半导体多层膜元件的半导体多层膜元件和电子束照射源,容器被气密地密封以具有负的内部压力并且具有 紫外线传输窗。 此外,半导体多层膜元件包括具有单一量子阱结构或In x Al y Ga 1-x-y N(0&nlE; x <1,0
摘要:
The luminous efficiency of a nitride semiconductor device comprising a gallium nitride-based semiconductor layer formed on a dissimilar substrate is improved. An n-type layer formed on the substrate with a buffer layer interposed between them comprises a portion of recess-and-projection shape in section as viewed in the longitudinal direction. Active layers are formed on at least two side faces of the projection with the recess located between them. A p-type layer is formed within the recess. An insulating layer is formed on the top face of the projection, and on the bottom face of the recess. The n-type layer is provided with an n-electrode while the p-type layer is provided with a p-electrode contact layer. As viewed from the p-type layer formed within the recess in the gallium nitride-based semiconductor layer, the active layer and the n-type layer are located in an opposite relation to each other. As viewed from the side face of the recess, the active layer and the p-type layer are formed across the n-type layer.
摘要:
The invention provides a nitride semiconductor light-emitting device comprising gallium nitride semiconductor layers formed on a heterogeneous substrate, wherein light emissions having different light emission wavelengths or different colors are given out of the same active layer. Recesses 106 are formed by etching in the first electrically conductive (n) type semiconductor layer 102 formed on a substrate with a buffer layer interposed between them. Each recess is exposed in plane orientations different from that of the major C plane. For instance, the plane orientation of the A plane is exposed. An active layer is grown and joined on the plane of this plane orientation, on the bottom of the recess and the C-plane upper surface of a non-recess portion. The second electrically conductive (p) type semiconductor layer is formed on the inner surface of the recess. With the active layer formed contiguously to the semiconductor layer in two or more plane orientations, a growth rate difference gives rise to a difference in the thickness across the quantum well (active layer), giving out light emissions having different light emission wavelength peaks or different colors.
摘要:
The invention provides a nitride semiconductor light-emitting device comprising gallium nitride semiconductor layers formed on a heterogeneous substrate, wherein light emissions having different light emission wavelengths or different colors are given out of the same active layer. Recesses 106 are formed by etching in the first electrically conductive (n) type semiconductor layer 102 formed on a substrate with a buffer layer interposed between them. Each recess is exposed in plane orientations different from that of the major C plane. For instance, the plane orientation of the A plane is exposed. An active layer is grown and joined on the plane of this plane orientation, on the bottom of the recess and the C-plane upper surface of a non-recess portion. The second electrically conductive (p) type semiconductor layer is formed on the inner surface of the recess. With the active layer formed contiguously to the semiconductor layer in two or more plane orientations, a growth rate difference gives rise to a difference in the thickness across the quantum well (active layer), giving out light emissions having different light emission wavelength peaks or different colors.
摘要:
A scanning probe microscope includes: a first and second probes for scanning a sample while maintaining the distance to the sample surface; crystal oscillators holding each of the first and second probes; and a modulation oscillator for providing the first probe with a vibration of a specific frequency which is different from the resonant frequency of each crystal oscillator. A control unit monitors the vibration of the specific frequency of the first and second probes, detects proximity of the first probe and the second probe to each other based on the change of the specific frequencies, and controls the drive of the first and second probes.
摘要:
A scanning probe microscope includes: a first and second probes for scanning a sample while maintaining the distance to the sample surface; crystal oscillators holding each of the first and second probes; and a modulation oscillator for providing the first probe with a vibration of a specific frequency which is different from the resonant frequency of each crystal oscillator. A control unit monitors the vibration of the specific frequency of the first and second probes, detects proximity of the first probe and the second probe to each other based on the change of the specific frequencies, and controls the drive of the first and second probes.
摘要:
A fluorescent material excellent in emission efficiency in white emission and a light-emitting apparatus employing this fluorescent material and having excellent color rendering are provided with a fluorescent material comprising a two-layer structure of a core of a particle size having a quantum effect and a shell covering this core in which the ground state energy of the core is in the range of 1.85 to 2.05 eV, the high order energy of the core is not in the ranges of 2.3 to 2.5 eV and 2.65 to 2.8 eV, or the ground state energy of the core is in the range of 2.3 to 2.5 eV, the high order energy of the core is not in the range of 2.65 to 2.8 eV an light-emitting apparatus employing these fluorescent materials.
摘要:
Disclosed is a light-emitting device comprising a semiconductor excitation light source emitting blue-violet light and a solid material illuminant having an absorbent for the blue-violet light containing samarium (Sm). With such a constitution, the light-emitting device has high efficiency, long life and excellent color rendering properties.