摘要:
A surface-emitting semiconductor light emitting device comprises an n-type ZnSe buffer layer, n-type ZnSSe layer, n-type ZnMgSSe cladding layer, n-type ZnSSe waveguide layer, active layer, p-type ZnSSe waveguide layer, p-type ZnMgSSe cladding layer, p-type ZnSSe layer,p-type ZnSe contact layer, p-type ZnSe/ZnTe MQW layer and p-type ZnTe contact layer, sequentially stacked on an n-type GaAs substrate. A grid-shaped p-side electrode and a Au film convering the p-side electrode are provided on the p-type ZnTe contact layer. An n-side electrode is provided on the back surface of the n-type GaAs substrate. The active layer has a single quantum well structure or a multiple quantum structure including ZnCdSe quantum well layers.
摘要:
A surface-emitting semiconductor light emitting device comprises an n-type ZnSe buffer layer, n-type ZnSSe layer, n-type ZnMgSSe cladding layer, n-type ZnSSe waveguide layer, active layer, p-type ZnSSe waveguide layer, p-type ZnMgSSe cladding layer, p-type ZnSSe layer, p-type ZnSe contact layer, p-type ZnSe/ZnTe MQW layer and p-type ZnTe contact layer, sequentially stacked on an n-type GaAs substrate. A grid-shaped p-side electrode and a Au film convering the p-side electrode are provided on the p-type ZnTe contact layer. An n-side electrode is provided on the back surface of the n-type GaAs substrate. The active layer has a single quantum well structure or a multiple quantum structure including ZnCdSe quantum well layers.
摘要:
A II-VI group compound semiconductor light-emitting device can emit light of a short wavelength at room temperature. Operation characteristics, such as current--voltage characteristics and current--light output characteristics can be stabilized and a life of this semiconductor light-emitting device can be extended. The semiconductor light-emitting device comprises a substrate (1), at least a first cladding layer (2) of a first conductivity type, an active layer (3) and a second cladding layer (4) of a second conductivity type, wherein at least the active layer (3) is made of a II-VI group compound semiconductor and the active layer (3) is doped by either or both of n-type and p-type dopants.
摘要:
A semiconductor light-emitting device capable of emitting blue to green light is disclosed. The device comprises a first cladding layer of the first conduction type stacked on a compound semiconductor substrate and made of ZnMgSSe compound semiconductor; an active layer stacked on the first cladding layer; a second cladding layer of the second conduction type stacked on the active layer and made of a ZnMgSSe compound semiconductor; and ZnSSe compound semiconductor layers provided on the second cladding layer and/or between the compound semiconductor substrate and the first cladding layer. The device has good optical confinement characteristics and carrier confinement characteristics, generates only a small amount of heat during its operation, and is fabricated easily.
摘要:
A light emitting device and a method of fabricating the same in which a first cladding layer is formed on a substrate, then red, green and blue light emitting portions each made of II-VI semiconductor are formed in a horizontal direction with respect to a surface of the substrate on the first cladding layer, then a second cladding layer is formed on the light emitting portions, and the red, green and blue light emitting portions are electrically separated from each other so that three primary color light emitting portions of a self luminous type are formed on the same substrate through single crystal growth process by changing composition of a compound semiconductor layer.
摘要:
A II-VI group compound semiconductor light-emitting device can emit light of a short wavelength at room temperature. Operation characteristics, such as current--voltage characteristics and current--light output characteristics can be stabilized and a life of this semiconductor light-emitting device can be extended. The semiconductor light-emitting device comprises a substrate (1), at least a first cladding layer (2) of a first conductivity type, an active layer (3) and a second cladding layer (4) of a second conductivity type, wherein at least the active layer (3) is made of a II-VI group compound semiconductor and the active layer (3) is doped by either or both of n-type and p-type dopants.
摘要:
A semiconductor light emitting device comprises: a compound semiconductor substrate; an n-type cladding layer on the compound semiconductor substrate; an active layer on the n-type cladding layer; a p-type cladding layer on the active layer: and a p-type contact layer on the p-type cladding layer, the n-type cladding layer, the active layer, the p-type cladding layer and the p-type contact layer being made of II-VI compound semiconductors containing at least one of group II elements selected from the group consisting of Zn, Cd, Mg, Hg and Be and at least one of group VI elements selected from the group consisting of S, Se, Te and O, characterized in that at least the active layer has undulations and at least the p-type layer is flat. A method for manufacturing a semiconductor light emitting device having: a compound semiconductor substrate; an n-type cladding layer on the compound semiconductor substrate; an active layer on the n-type cladding layer; and a p-type cladding layer on the active layer, the n-type cladding layer, the active layer and the p-type cladding layer being made of II-VI compound semiconductors containing at least one of group II elements selected from the group consisting of Zn, Cd, Mg, Hg and Be and at least one of group VI elements selected from the group consisting of S, Se, Te and O, characterized in that the n-type cladding layer, the active layer and said p-type cladding layer are grown by varying, for the respective layers, the ratio of the molecular beam intensity of the group VI element relative to the molecular beam intensity of the group II element.
摘要:
A p-type GaAs current block layer is stacked on a (100)-oriented n-type GaAs substrate, and a stripe-shaped groove is formed in the p-type GaAs current block layer to extend in the direction. Side surfaces of the groove has the maximum inclination not larger than 60.degree.. The thickness of the p-type GaAs current block layer is 1.5 .mu.m or more. Stacked on the structured substrate having the current narrowed mechanism via an n-type ZnSe buffer layer are an n-type ZnMgSSe cladding layer, n-type ZnSSe waveguide layer, active layer, p-type ZnSSe waveguide layer, p-type ZnMgSSe cladding layer, and others, to establish an index-guided inner-striped semiconductor laser having SCH structure and CSPW structure.
摘要:
A selfluminous display device having distinct blue (B), green (G) and red (R) light emission sources wherein the spectra of the light emission sources each have a narrow half band width (30 nm or less) at a level regarded as precursor delta functions, which do not mutually substantially overlap. Because light sources having spectra of limited peak values and extremely narrow limited widths are used, shape changes of the spectrum in each light source are suppressed in the wavelength space and can be regarded as purely magnitude changes. Therefore, it becomes possible to correct just by changing the strength for each light emission source, color reproducibility increases and there ceases to be any change over time in the colors.
摘要:
A light emitting device and a method of fabricating the same in which a first cladding layer is formed on a substrate, then red, green and blue light emitting portions each made of II-VI semiconductor are formed in a horizontal direction with respect to a surface of the substrate on the first cladding layer, then a second cladding layer is formed on the light emitting portions, and the red, green and blue light emitting portions are electrically separated from each other so that three primary color light emitting portions of a self luminous type are formed on the same substrate through single crystal growth process by changing composition of a compound semiconductor layer.