Abstract: A semiconductor structure includes a first semiconductor stack, a tunnel junction structure and a second semiconductor stack. The first semiconductor stack includes a first first-type semiconductor layer, a first active region and a first second-type semiconductor layer. The first active region has a plurality of first recesses. The first second-type semiconductor layer conformally covers the first active region and has a plurality of second recesses corresponding to the first recesses. The tunnel junction structure conformally covers the first second-type semiconductor layer and has a plurality of third recesses corresponding to the second recesses. The second semiconductor stack is disposed on the tunnel junction structure and includes a second first-type semiconductor layer, a second active region and a second second-type semiconductor layer stacked in sequence from bottom to top. The second first-type semiconductor layer fills up the third recesses.

Abstract: A photo-detecting device includes a first semiconductor layer, a second semiconductor layer located on the first semiconductor layer, a light-absorbing layer located between the first semiconductor layer and the second semiconductor layer, and a first interface between the second semiconductor layer and the light-absorbing layer. The second semiconductor layer includes a first region having a first dopant and a second region surrounding the first region. The light-absorbing layer includes a third region having the first dopant and a fourth region surrounding the third region. The first dopant of the first region close to the first interface has a first doping concentration, and the first dopant of the third region close to the first interface has a second doping concentration larger than the first doping concentration.

Abstract: An optoelectronic semiconductor device includes a base, a semiconductor stack and a light-absorbing layer. The semiconductor stack includes a first semiconductor layer on the base, a second semiconductor layer on the first semiconductor layer, and a light absorbing layer between the first semiconductor layer and the second semiconductor layer. The first semiconductor layer includes a modified region and an unmodified region surrounding the modified region. The bonding structure is between the first semiconductor layer and the base. The first electrode structure is disposed on and connected to the second semiconductor layer. A thickness of the second semiconductor layer is less than or equal to 50 nm.

Abstract: A light-emitting device includes a first nitride semiconductor structure; a stress relief structure on the first nitride semiconductor structure including a plurality of narrow band gap layers and a plurality of wide band gap layers alternately stacked, wherein one of the plurality of wide band gap layers includes a plurality of wide band gap sub-layers and one of the plurality of wide band gap sub-layers includes aluminum; an active structure on the stress relief structure including a plurality of quantum well layers and a plurality of barrier layers alternately stacked, wherein one of the plurality of barrier layers includes a plurality of barrier sub-layers and one of the plurality of barrier sub-layers includes aluminum, an aluminum composition of the wide band gap sub-layer is greater than or equal to that of the barrier sub-layer, and an average aluminum composition of the wide band gap layer is greater than that of the barrier layer; and an electron blocking structure on the active structure.

Abstract: An optoelectronic device includes a substrate, a first semiconductor stack located on the substrate, a second semiconductor stack located on the first semiconductor stack, and a first optical structure located between the first semiconductor stack and the second semiconductor stack. The first semiconductor stack includes a first semiconductor layer, a second semiconductor layer and a first active layer which emits or absorbs a first light with a first wavelength. The second semiconductor stack includes a third semiconductor layer, a fourth semiconductor layer and a second active layer which emits or absorbs a second light with a second wavelength smaller than the first wavelength. The first optical structure includes a plurality of first parts and a plurality of second parts. The first parts and the second parts are alternately arranged by a first period along a horizontal direction parallel to the substrate.

Abstract: A semiconductor element is provided. The semiconductor element includes: a semiconductor stack including a mesa portion and a recessed portion; a contact layer formed on the mesa portion; an insulating layer formed on the semiconductor stack and the contact layer, wherein the insulating layer includes a first opening formed on the mesa portion; and an electrode layer formed on the insulating layer, wherein the electrode layer is electrically connected to the contact layer. In a plan view, the mesa portion includes a first centroid, the contact layer includes a second centroid, and the first opening includes a third centroid, and a distance between the first centroid and the third centroid is greater than a distance between the second centroid and the third centroid.

Abstract: The present disclosure provides a semiconductor device. The semiconductor device includes an epitaxial stack including a first semiconductor structure and a second semiconductor structure; a first contact on the first semiconductor structure; a first pad on the first contact; a connector between the first contact and the first pad, and including a first side surface; a first metal bump on the first pad and having a second side surface surrounding the first side surface; and a passivation structure covering the first side surface and contacting the first metal bump.

Abstract: A photo-detecting device includes a first semiconductor layer, a second semiconductor layer located on the first semiconductor layer, a light-absorbing layer located between the first semiconductor layer and the second semiconductor layer, an insulating layer located on the second semiconductor layer, and an electrode structure located on the insulating layer. The second semiconductor layer includes a first region having a first conductivity-type and a second region having a second conductivity-type different from the first conductivity-type. The first region is surrounded by the second region, and includes a geometric center and an interface between the first region and the second region. The insulating layer covers the first region and the second region. The electrode structure includes an outer sidewall located on the second region. In a top view, the interface is located between the geometric center and the outer sidewall.

Abstract: A light-emitting device includes a first nitride semiconductor structure; a stress relief structure on the first nitride semiconductor structure including a plurality of narrow band gap layers and a plurality of wide band gap layers alternately stacked, wherein one of the plurality of wide band gap layers includes a plurality of wide band gap sub-layers and one of the plurality of wide band gap sub-layers includes aluminum; an active structure on the stress relief structure including a plurality of quantum well layers and a plurality of barrier layers alternately stacked, wherein one of the plurality of barrier layers includes a plurality of barrier sub-layers and one of the plurality of barrier sub-layers includes aluminum, an aluminum composition of the wide band gap sub-layer is greater than or equal to that of the barrier sub-layer, and an average aluminum composition of the wide band gap layer is greater than that of the barrier layer; and an electron blocking structure on the active structure.

Abstract: A semiconductor device includes a semiconductor stack, a third semiconductor structure, a dielectric layer, and an extension electrode. The semiconductor stack includes a first semiconductor structure, an active structure, and a second semiconductor structure stacked in sequence along a vertical direction. The third semiconductor structure connects to the first semiconductor structure and includes a first part. The dielectric layer connects to the first semiconductor structure and includes an opening corresponding to the first part. The extension electrode connects to the second semiconductor structure without overlapping with the third semiconductor 10 structure in the vertical direction. The first part has a near electrode end and a far electrode end opposite to the near electrode end, and a distance from the far electrode end to the opening is smaller than a distance from the near electrode end to the opening.

Abstract: A semiconductor device includes a semiconductor stack, a third semiconductor structure, a dielectric layer, and a reflective layer under the third semiconductor structure. The semiconductor stack includes a first semiconductor structure, an active structure, a second semiconductor structure. The first semiconductor structure has a first surface which includes a first portion and a second portion, and the first surface has a first area. The third semiconductor structure connects to the first portion, and has a second surface with a second area. The dielectric layer connects to the second portion and includes a plurality of openings, and the plurality of openings have a third area. A ratio of the second area to the first area is between 0.1˜0.7, and a ratio of the third area to the first area is less than 0.2.

Abstract: The present disclosure provides a semiconductor light-emitting device. The semiconductor light-emitting device includes a first semiconductor contact layer, a semiconductor light-emitting stack, a first-conductivity-type contact structure, a second semiconductor contact layer, a second-conductivity-type contact structure, a first electrode pad and a second electrode pad. The semiconductor light-emitting stack is located on the first semiconductor contact layer and comprising an active layer. The first-conductivity-type contact structure is located on the first semiconductor contact layer. The second semiconductor contact layer is located on the semiconductor light-emitting stack. The second-conductivity-type contact structure is located on the semiconductor light-emitting stack and electrically connected to the second semiconductor contact layer. The first electrode pad is located on the first-conductivity-type contact structure.

Abstract: A semiconductor light-emitting device includes: a semiconductor stack, including; an active layer, formed on the semiconductor stack; a second semiconductor contact layer formed on the active layer; and a recessed region formed in the semiconductor stack and including a part of the upper surface; a transparent electrode on the second semiconductor contact layer; a protective layer on semiconductor stack, including a first and second opening; a first electrode pad in the first opening and connected with the first semiconductor contact layer; and a second electrode pad in the second opening and connected to the transparent electrode. The semiconductor light-emitting device receives an operating current having ratio to the area of the transparent electrode that ranges from 10 mA/mm2 to 1000 mA/mm2. In a top view, the active layer surrounds the recessed region. The semiconductor stack and the transparent electrode layer each includes an edge adjacent to the recessed region.

Abstract: An embodiment of the present disclosure provides a semiconductor device. The semiconductor device has a first semiconductor structure; a second semiconductor structure on the first semiconductor structure and having a first aluminum content; a plurality of voids in the second semiconductor structure; an active structure between the first semiconductor structure and the second semiconductor structure; and a third semiconductor structure between the active structure and the second semiconductor structure, and having a second aluminum content. The first aluminum content is greater than the second aluminum content.

Abstract: The present disclosure provides a semiconductor light-emitting device and a semiconductor light-emitting component. The semiconductor light-emitting device includes a substrate, a first semiconductor contact layer, a semiconductor light-emitting stack including an active layer, a first-conductivity-type contact structure, a second semiconductor contact layer, a second-conductivity-type contact structure and a first electrode pad. The first-conductivity-type contact structure is electrically connected to the first semiconductor contact layer. The second-conductivity-type contact structure is electrically connected to the second semiconductor contact layer. The first-conductivity-type contact structure has a first bottom surface and a first top surface, and the active layer has a second bottom surface and a second top surface.

Abstract: A light-emitting device including a semiconductor stack generating a first light, and a filter formed on the semiconductor stack, including a first surface facing the semiconductor stack and a second surface opposite to the first surface. The filter includes pairs of layers with different refractive indexes alternately stacked. A portion of the first light is transmitted by the filter. The light emitting device emits a second light including the portion of the first light, and the second light includes a first directional part with a first FWHM and a second directional part with a second FWHM smaller than the first FWHM. The first directional part has a first angle with a normal direction of the second surface in a range of 45-90 degrees and the second directional part having a second angle with the normal direction of the second surface in a range of 0-30 degrees.

Abstract: A light-emitting device comprises a first semiconductor layer; a semiconductor mesa, comprising an active layer and a second semiconductor layer and comprising an inclined surface; a contact electrode covering the second semiconductor layer and comprising a first side surface; an insulating reflective structure covering the contact electrode and comprising a plurality of insulating reflective structure openings; a connection layer covering the insulating reflective structure and filling into the plurality of insulating reflective structure openings, and comprising a second side surface; and a metal reflective layer covering the connection layer and filling into the plurality of insulating reflective structure openings, and comprising a third side surface; wherein in a cross-sectional view of the light-emitting device, a first pitch is between the first side surface and the inclined surface, a third pitch is between the third side surface and the inclined surface, and the third pitch is smaller than the first