摘要:
The present invention provides a nitride based semiconductor device comprising an active layer having a quantum well layer and a quantum barrier layer, wherein the device includes an electron emitting layer formed of at least two repeats of a first nitride semiconductor layer and a second nitride semiconductor layer having different compositions between a n-type nitride semiconductor layer and the active layer, the first nitride semiconductor layer has an energy band gap greater than that of the quantum well layer, smaller than that of the quantum barrier layer, and decreasing closer to the active layer, and the second nitride semiconductor layer has an energy band gap at least higher than that of the adjacent first nitride semiconductor layer(s) and has a thickness capable of tunneling electrons.
摘要:
A surface treated nitride semiconductor in use for a light emitting diode, in which an n-cladding layer is formed on a substrate. An active layer having a multiple quantum well structure is formed on the n-cladding layer. A p-cladding layer is formed on the active layer. A p-capping layer is formed on the p-cladding layer in a low temperature range in which single crystal growth does not take place. The p-capping layer has a nanoscale roughened structure formed in an upper surface thereof via heat treatment in a high temperature range in which at least partial crystallization takes place. The nanoscale roughened structure reduces total internal reflection of the nitride semiconductor thereby improving external quantum efficiency thereof.
摘要:
Disclosed herein is a nitride-based semiconductor light-emitting device. The nitride-based semiconductor light-emitting device comprises an n-type clad layer made of n-type Alx1Iny1Ga(1-x1-y1)N (where 0≦x1≦1, 0≦y1≦1, and 0≦x1+y1≦1), a multiple quantum well-structured active layer made of undoped InAGa1-AN (where 0
摘要翻译:本文公开了一种氮化物基半导体发光器件。 氮化物系半导体发光元件包括由n型Al x In 1(1-x1-y1)构成的n型覆盖层, N(其中0 <= X 1 <= 1,0 <= Y 1 <= 1,AND 0 <= X 1 由未掺杂的In N a Ga 1-A N(N 1)组成的多量子阱结构的有源层, 其中形成在n型覆盖层上的0 1-y2 N(其中0 <= Y2-2 <1)和由p型Al < (1-x3-y3)N(其中0
摘要:
This invention pertains to a gallium nitride-based semiconductor light-emitting device, in which nano-sized, fine protrusions are formed on an upper surface of a p-type clad layer without a deterioration of crystallinity and electric conductivity to improve light extraction efficiency, and a method of fabricating the same. After a first conductive gallium nitride-based semiconductor layer and an active layer are grown on a substrate under typical growth conditions, a second conductive gallium nitride-based semiconductor layer is grown on a polarity conversion layer containing a MgN-based single crystal and formed on the active layer, so that a polarity of the second conductive gallium nitride-based semiconductor layer is converted into an N polarity, thereby roughing a surface thereof.
摘要:
The present invention provides a semiconductor light-emitting device. The light-emitting device comprises a first conductive clad layer, an active layer, and a second conductive clad layer sequentially formed on a substrate. In the light-emitting device, the substrate has one or more side patterns formed on an upper surface thereof while being joined to one or more edges of the upper surface. The side patterns consist of protrusions or depressions so as to scatter or diffract light to an upper portion or a lower portion of the light-emitting device.
摘要:
Disclosed herein is a nitride-based semiconductor light-emitting device. The nitride-based semiconductor light-emitting device comprises an n-type clad layer made of n-type Alx1Iny1Ga(1−x1−y1)N (where 0≦x1≦1, 0≦y1≦1, and 0≦x1+y1≦1), a multiple quantum well-structured active layer made of undoped InAGa1−AN (where 0
摘要翻译:本文公开了一种氮化物基半导体发光器件。 氮化物系半导体发光元件包括由n型Al x In 1(1-x1-y1)构成的n型覆盖层, N(其中0 <= X 1 <= 1,0 <= Y 1 <= 1,AND 0 <= X 1 由未掺杂的In N a Ga 1-A N(N 1)组成的多量子阱结构的有源层, 其中形成在n型覆盖层上的0 1-y2 N(其中0 <= Y2-2 <1)和由p型Al < (1-x3-y3)N(其中0
摘要:
The invention relates to a nitride semiconductor device having electron-emitting. In the device, an n-type nitride semiconductor layer is formed over a substrate, and an active layer is formed over the n-type nitride semiconductor layer. Also, a p-type nitride semiconductor layer is formed on the active layer. The active layer is formed between the p-type nitride semiconductor layer and the n-type nitride semiconductor layer and includes a quantum well layer and a quantum barrier layer. Further, an electron-emitting layer is formed between the n-type nitride semiconductor layer and the active layer. The electron-emitting layer includes a nitride semiconductor quantum dot layer formed on the n-type nitride semiconductor layer and having a composition expressed by AlXInyGa1-X-y)N, where 0≦x≦1 and 0≦y≦1, and a resonance tunnel layer formed on the nitride semiconductor quantum dot layer and having energy band gap bigger than that of adjacent quantum dot layer.
摘要翻译:本发明涉及具有电子发射的氮化物半导体器件。 在器件中,在衬底上形成n型氮化物半导体层,并且在n型氮化物半导体层上形成有源层。 此外,在有源层上形成p型氮化物半导体层。 有源层形成在p型氮化物半导体层和n型氮化物半导体层之间,包括量子阱层和量子势垒层。 此外,在n型氮化物半导体层和有源层之间形成电子发射层。 电子发射层包括形成在n型氮化物半导体层上的氮化物半导体量子点层,并且具有由Al x In 1 Y 1 Ga -Xy)N,其中0 <= x <= 1且0 <= y <= 1,以及形成在氮化物半导体量子点层上并具有大于相邻量子能带隙的能带隙的谐振隧道层 点层。
摘要:
A nitride semiconductor light emitting device including a light emitting diode and a diode formed on a single substrate, in which the light emitting diode and the diode use a common electrode. According to the present invention, an active layer and a p-type nitride semiconductor layer are each divided into a first region and a second region by an insulative isolation layer, and an ohmic contact layer is formed on the p-type nitride semiconductor layer contained in the first region. A p-type electrode is formed on the ohmic contact layer and is extended to the p-type nitride semiconductor layer contained in the second region. An n-type electrode is formed on the p-type nitride semiconductor layer contained in the second region, passes through the p-type nitride semiconductor layer and the active layer contained in the second region, and is connected to the first n-type nitride semiconductor layer.