摘要:
[PROBLEM] The purpose of the present invention is to provide a reference electrode which is easy to manufacture and handle, its manufacturing method, and an electrochemical cell using this.[METHOD FOR SOLVING THE PROBLEM] The reference electrode 10 comprises a core material 11 extending parallel to the anode 14 or the cathode 16 from a terminal, a lithium membrane 12 coating from a tip of the core material 11 to a field with predetermined length, and an insulator 13 partially coating a field uncoated with the lithium membrane 12 on the core material 11. The material consisting of at least a surface of the core material 11 is a conductive material which is substantially unresponsive to lithium or lithium alloy. The maximum width in a cross section of the core material 11 is preferably in the range of not less than 5 micrometers but not more than 50 micrometers, and thickness of the lithium membrane is preferably in the range of not less than 0.1 micrometers but not more than 20 micrometers. By using the core material 11 with higher rigidity than lithium or lithium alloy, handling and manufacturing the reference material 10 is easy, for example, the material can be processed easily and its shape can be stabilized.[SELECTED FIGURE] FIG. 2
摘要:
According to one embodiment, a semiconductor light emitting device includes a light emitting layer, a first electrode, a first conductivity type layer, a second conductivity type layer, and a second electrode. The first electrode includes a reflection metal layer. The first conductivity type layer is provided between the light emitting layer and the first electrode. The second conductivity type layer has a first surface on the light emitting layer side and a second surface on an opposite side of the first surface. The second electrode is provided on the second surface of the second conductivity type layer. A plurarity of interfaces, provided between the first conductivity type layer and the reflection metal layer, has at least first concave-convex structures. A region of the second surface of the second conductivity type layer, where the second electrode is not provided, has second concave-convex structures.
摘要:
According to one embodiment, a light emitting element includes a light emitting layer, a cladding layer, a current spreading layer, a second layer, and an electrode. The light emitting layer is capable of emitting emission light. The current spreading layer includes a surface processed layer and a first layer. The surface processed layer has a surface including convex portions and bottom portions provided adjacent to the convex portions. The first layer is provided between the surface processed layer and the cladding layer. The second layer is provided between the surface processed layer and the cladding layer and includes a region having an impurity concentration higher than an impurity concentration of the current spreading layer. The electrode is provided in a region of the surface of the surface processed layer where the convex portions and the bottom portions are not provided.
摘要:
According to an embodiment, a semiconductor light emitting device includes a first semiconductor layer, a second semiconductor layer, a dielectric film and an electrode. The first semiconductor layer is capable of emitting light. The second semiconductor layer has a first major surface in contact with the first semiconductor layer and a second major surface opposite to the first major surface, the second major surface including a first region having convex structures and a second region not having the convex structures. The dielectric film is provided at least at a tip portion of the convex structures, and the electrode is provided above the second region.
摘要:
According to one embodiment, a semiconductor light emitting device includes a substrate, a first electrode, a first conductivity type layer, a light emitting layer, a second conductivity type layer and a second electrode. The first conductivity type layer includes a first contact layer, a window layer having a lower impurity concentration than the first contact layer and a first cladding layer. The second conductivity type layer includes a second cladding layer, a current spreading layer and a second contact layer. The second electrode includes a narrow-line region on the second contact layer and a pad region electrically connected to the narrow-line region. Band gap energies of the first contact and window layers are larger than that of the light emitting layer. The first contact layer is provided selectively between the window layer and the first electrode and without overlapping the second contact layer as viewed from above.
摘要:
According to one embodiment, a semiconductor light emitting device includes a light emitting layer, a first electrode, a first conductivity type layer, a second conductivity type layer, and a second electrode. The first electrode includes a reflection metal layer. The first conductivity type layer is provided between the light emitting layer and the first electrode. The second conductivity type layer has a first surface on the light emitting layer side and a second surface on an opposite side of the first surface. The second electrode is provided on the second surface of the second conductivity type layer. A plurarity of interfaces, provided between the first conductivity type layer and the reflection metal layer, has at least first concave-convex structures. A region of the second surface of the second conductivity type layer, where the second electrode is not provided, has second concave-convex structures.
摘要:
According to one embodiment, a light emitting element includes a light emitting layer, a cladding layer, a current spreading layer, a second layer, and an electrode. The light emitting layer is capable of emitting emission light. The current spreading layer includes a surface processed layer and a first layer. The surface processed layer has a surface including convex portions and bottom portions provided adjacent to the convex portions. The first layer is provided between the surface processed layer and the cladding layer. The second layer is provided between the surface processed layer and the cladding layer and includes a region having an impurity concentration higher than an impurity concentration of the current spreading layer. The electrode is provided in a region of the surface of the surface processed layer where the convex portions and the bottom portions are not provided.
摘要:
The present invention provides a constant current circuit and a constant current generating method, wherein when a voltage slight in temperature dependence is applied to an element to output a constant current, temperature dependence of the element can be cancelled. A current indicative of first temperature dependence, which is generated by applying a bias voltage slight in temperature dependence to a first current setting section, and a current indicative of second temperature dependence, which is generated by applying a bias voltage slight in temperature dependence to a second current setting section are added and outputted as a constant current slight in temperature dependence. When a bias voltage slight in temperature dependence is applied to a current setting section having resistive components to generate currents, even where the resistive components have temperature dependence, the first and second current setting sections having temperature dependence opposite to each other are parallel-connected and bias voltages are applied thereto, after which the generated currents are added together. Consequently, the temperature dependence contained in the individual current setting sections can be cancelled out and hence a constant current slight in temperature dependence can be outputted.
摘要:
According to one embodiment, a light emitting device includes a light emitting layer, a first electrode, a first and second layers, and a cladding layer. The first layer has a first impurity concentration of a first conductivity type, and allows a carrier to be diffused in the light emitting layer. The second layer has a second impurity concentration of the first conductivity type higher than the first impurity concentration, and includes a first and second surfaces. The first surface is with the first layer. The second surface has a formation region and a non-formation region of the first electrode. The non-formation region includes convex structures with an average pitch not more than a wavelength of the emission light. The cladding layer is provided between the first layer and the light emitting layer and has an impurity concentration of the first conductivity type.
摘要:
According to an embodiment, a semiconductor light emitting device includes a first semiconductor layer, a second semiconductor layer, a dielectric film and an electrode. The first semiconductor layer is capable of emitting light. The second semiconductor layer has a first major surface in contact with the first semiconductor layer and a second major surface opposite to the first major surface, the second major surface including a first region having convex structures and a second region not having the convex structures. The dielectric film is provided at least at a tip portion of the convex structures, and the electrode is provided above the second region.