摘要:
According to one embodiment, a semiconductor device includes a substrate and a stacked body on the substrate via a joining metal layer. The stacked body includes a device portion and a peripheral portion. The device portion includes from a bottommost layer to a topmost layer included in the stacked body. The peripheral portion surrounding and provided around the device portion; the peripheral portion is a portion of the bottommost layer to the topmost layer included in the stacked body and includes a portion of a semiconductor layer in contact with the joining metal layer.
摘要:
According to one embodiment, a light emitting device includes a light emitting layer, a first conductivity type layer, a first electrode, a second conductivity type layer, a current blocking layer and a second electrode. The first conductivity type layer is provided on the light emitting layer. The first electrode is provided on the first conductivity type layer. The second conductivity type layer is provided under the light emitting layer. The current blocking layer is provided in contact with a partial region of a surface of the second conductivity type layer, and has an outer edge protruding from an outer edge of the first electrode. The second electrode is in contact with a surface of the current blocking layer on opposite side from the second conductivity type layer and a region of the surface of the second conductivity type layer not in contact with the current blocking layer.
摘要:
According to one embodiment, a light emitting device includes a light emitting layer, a first conductivity type layer, a first electrode, a second conductivity type layer, a current blocking layer and a second electrode. The first conductivity type layer is provided on the light emitting layer. The first electrode is provided on the first conductivity type layer. The second conductivity type layer is provided under the light emitting layer. The current blocking layer is provided in contact with a partial region of a surface of the second conductivity type layer, and has an outer edge protruding from an outer edge of the first electrode. The second electrode is in contact with a surface of the current blocking layer on opposite side from the second conductivity type layer and a region of the surface of the second conductivity type layer not in contact with the current blocking layer.
摘要:
An LED manufacturing method includes the steps of forming a first insulator film on a semiconductor layer, forming a laminated body including a mask layer and an electrode on the first insulator film, forming a second insulator film to cover the laminated body and a first region of the first insulator film where a laminated body is not formed, anisotropic etching the second insulator film to expose the top surface of the mask layer and a second region of the first insulator film, exposing the surface of a semiconductor layer by removing the first insulator film while keeping the first insulator film between the laminated body and the semiconductor layer, removing the mask layer, and forming a clear conducting layer on top of the exposed surface of the semiconductor layer and the electrode.
摘要:
For the purpose of enhancing the light extracting efficiency, improving the production yield and elongating the lifetime of a semiconductor light emitting element or a semiconductor light emitting device using the element, a semiconductor light emitting element comprises: a light emitting layer that emits light; and a substrate transparent to the light emitted from the light emitting layer. The substrate defines a top surface supporting the light emitting layer thereon; a bottom surface opposed to the top surface and side surfaces connecting the top surface and the bottom surface. Each of the side surfaces is composed of first side surface extending from the top surface toward the bottom surface, second side surface extending from the first side surface toward the bottom surface, and third side surface extending from the second side surface toward the bottom surface. The third side surfaces incline to diverge toward the top surface, and the second side surfaces incline to diverge more toward the top surface to extract part of the light from the light emitting layer externally. The first side surfaces are formed by cleavage along cleavable planes.
摘要:
A semiconductor light emitting element is proposed that improves a light extraction efficiency without requiring any complicated processes and techniques. The semiconductor light emitting element includes an active layer for emitting first light by current injection, and a light absorbing and emitting section for absorbing a part of the first light and for emitting second light having a greater peak wavelength than the first light. A difference in peak wavelength between the first light and the second light is in a range in which a spectrum of a mixture of the first and second light maintains a unimodal characteristic or is smaller than 0.9 times a half width of the spectrum of the first light.
摘要:
According to one embodiment, a light emitting device includes a support body, a first light emitting portion, a second light emitting portion, and a second reflector. The support body includes a first reflector. The first light emitting portion and the second light emitting portion are provided on the support body and include a light emitting layer. Downward directed light of emission light from the light emitting layer is capable of being reflected upward by the first reflector. The second reflector is interposed between the first light emitting portion and the second light emitting portion, provided on the support body, has a cross-sectional shape expanding downward, and includes a side surface metal layer provided on a side surface of the second reflector.
摘要:
A light emitting device includes a stacked body including at least a light emitting layer made of Inx(AlyGa1-y)1-xP (0≦x≦1, 0≦y≦1), a p-type cladding layer made of Inx(AlyGa1-y)1-xP (0≦x≦1, 0≦y≦1), and a bonding layer made of a semiconductor; and a substrate in which deviation in a lattice constant at a bonding interface with the bonding layer is larger than deviation in lattice constants between the light emitting layer and the bonding layer. The p-type cladding layer is located more distant from the bonding interface than the light emitting layer, and the p-type cladding layer has a carrier concentration of 0.5×1017 cm−3 or more and 3×1017 cm−3 or less.
摘要翻译:发光器件包括至少包括由Inx(Al y Ga 1-y)1-x P(0≦̸ x≦̸ 1,0& nlE; y≦̸ 1)构成的发光层的堆叠体,由Inx AlyGa1-y)1-xP(0≦̸ x≦̸ 1,0& nlE; y≦̸ 1)和由半导体制成的接合层; 以及在与结合层的接合界面处的晶格常数偏差大于发光层和接合层之间的晶格常数偏差的基板。 p型覆层与发光层的结合界面更远离,p型覆层的载流子浓度为0.5×10 17 cm -3以上3×1017cm -3以下。
摘要:
A semiconductor light emitting device includes: an upper growth layer including a light emitting layer; a transparent substrate through which a radiant light from the light emitting layer passes; and a foundation layer provided between the upper growth layer and the transparent substrate, the foundation layer having a surface-controlling layer and a bonding layer bonded with the transparent substrate. The surface-controlling layer is made of compound semiconductor including at least Ga and As. The upper growth layer is formed on an upper surface of the surface-controlling layer. A lattice constant difference at an interface between the surface-controlling layer and the upper growth layer is smaller than that at an interface between the bonding layer and the transparent substrate.
摘要:
The initial movement of a spherical body is detected by detecting the intersection with a light beam emitted from trigger light illuminating portion 2 to trigger light-receiving portion 3, and as a result, measurement of time by an arithmetic processing unit is started. During flight, spherical body 1 intersects light beams emitted from surface velocity sensors 4 and 5, the reflected light therein is detected by these surface velocity sensors 4 and 5, and the surface velocity of spherical body 1 is then measured. Spherical body 1 continues in flight and intersects at least two light beams irradiated from multi-beam illuminating portion 6 which are detected by multi-beam light-receiving portion 7. Based on a signal from multi-beam light-receiving portion 7 the arithmetic processing unit measures the time of intersection of spherical body 1 with a light beam, and then calculates the angle of elevation, horizontal angle, velocity and surface velocity of spherical body 1 based on the aforementioned measured time period. Furthermore, this arithmetic processing unit also calculates the amount of directional rotation of spherical body 1 based on the aforementioned calculated angle of elevation, horizontal angle, velocity and surface velocity of spherical body 1.