Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor laser having not only comparatively high radiation quality but also improved in electrical characteristics. SOLUTION: There is provided the semiconductor laser 1 having: a semiconductor layer 2 in a row direction including an active region 3 to generate electromagnetic radiations; and an absorption region 4 to attenuate the higher mode. The absorption region 4 is disposed on the semiconductor layer 2 in the row direction or adjacent thereto. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor layer structure in which the electrical characteristics and the optical characteristics are improved, and to provide an optoelectronics device having such a semiconductor layer structure. SOLUTION: In the semiconductor layer structure, the thickness of a first type layer and the thickness of a second type layer increases layer by layer as the distance from an active layer increases. An optoelectronics device having such a semiconductor layer structure is also provided. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor layer structure in which the electrical characteristics and the optical characteristics are improved, and to provide an optoelectronics device having such a semiconductor layer structure. SOLUTION: In the semiconductor layer structure, adjoining layers of different type in a superlattice have a different composition of at least one element, at least two layers of the same type in the superlattice have a different content of at least one element, the content of at least one element is gradient in the layer of the superlattice which contains a doping material at a predetermined concentration, and the superlattice has a layer doped by a different doping material. An optoelectronics device having such a semiconductor layer structure is also provided. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an improved edge-emitting semiconductor laser chip and optimize a distortion and a waveguide property in a semiconductor laser. SOLUTION: There is provided an edge emitting semiconductor laser chip, including a support substrate (1) and an intermediate layer (2), wherein the intermediate layer (2) intermediates an adhesion between the support substrate (1) and an element structure (50) of the edge-emitting semiconductor laser chip, and at that time, the element structure (50) has an active region (5) provided for beam formation. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an improved optoelectronics semiconductor main body and to provide a method for manufacturing an improved optoelectronics semiconductor main body.SOLUTION: An optoelectronics semiconductor main body comprises: a substrate (10); an epitaxial semiconductor stacked layer (20) suitable to generate electromagnetic radiations and provided in a first region (14) on a first principal face (12) of the substrate; a first trench (24) in a second region (22) neighboring the first region (14) in the substrate; and at least one second trench (30) provided in the second region (22) outside the first region (14). The at least one second trench (30) at least partially cuts a principal face of the epitaxial semiconductor stacked layer (20) on the side opposite to the substrate (10) off the epitaxial semiconductor stacked layer (20). The second trench (30) is disposed so that the first trench (24) is covered.
Abstract:
PROBLEM TO BE SOLVED: To provide a radiation-emitting semiconductor chip with an improved light extraction efficiency.SOLUTION: The invention relates to a radiation-emitting semiconductor chip (1), comprising an active zone (2) for generating radiation having a wavelength λ and a patterned region (3) having irregularly arranged pattern elements. The pattern elements contain a first material having a first refractive index n, and are surrounded by a medium comprising a second material having a second refractive index n. The invention relates to a method for producing the radiation-emitting semiconductor chip.
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor layer structure having a superlattice with which electrical and optical properties have been improved, and to provide an opto-electronics device having the semiconductor layer structure. SOLUTION: This semiconductor layer structure includes multiple layers of superlattice containing a predetermined concentration of dopant. The concentration of this dopant differs at least in two layers of the same composition in the superlattice. The dopant of at least one layer of the superlattice is in a gradient of concentration, and the superlattice has a layer doped by a different kind of dopant. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
The invention relates to an optoelectronic semiconductor body comprising a substrate (10), a first primary surface (12) of which having in a first region (14) a series of epitaxial semiconductor layers (20) for generating electromagnetic radiation and in a second region (22) adjoining the first (14) a first trench (24) and at least a second trench (30) located outside the first region (14). The invention also relates to an optoelectronic semiconductor body and to a method for producing an optoelectronic semiconductor body.
Abstract:
The invention relates to an opto-electronic semiconductor chip, which has a radiation-emitting semiconductor layer sequence (1) with an active zone (120). The active zone comprises a first quantum well layer (3), a second quantum well layer (4), and two end barrier layers (51). The first quantum well layer and the second quantum well layer are disposed between the two end barrier layers. The active zone has a semiconductor material, which comprises at least one first and a second component. The fraction of the first component in the semiconductor material of the two end barrier layers is lower than in the first and second quantum well layers. Compared to the first quantum well layer, the second quantum well layer has either a lower layer thickness and a larger fraction of the first component of the semiconductor material, or a higher or the same layer thickness and a lower fraction of the first component of the semiconductor material.