摘要:
An active layer (17) is provided so as to emit light having an emission wavelength in the 440 nm to 550 nm band. A first-conductivity-type gallium nitride semiconductor region (13), the active layer (17), and a second-conductivity-type gallium nitride semiconductor region (15) are arranged along a predetermined axis (Ax). The active layer (17) includes a well layer composed of hexagonal InxGa1-xN (0.16≦x≦0.4, x: strained composition), with the indium fraction x represented by the strained composition. The m-plane of the hexagonal InxGa1-xN is oriented along the predetermined axis (Ax). The well-layer thickness is between greater than 3 nm and less than or equal to 20 nm. Having the well-layer thickness be over 3 nm makes it possible to fabricate light-emitting devices having an emission wavelength of over 440 nm.
摘要翻译:提供有源层(17)以发射具有440nm至550nm波段的发射波长的光。 第一导电型氮化镓半导体区域(13),有源层(17)和第二导电型氮化镓半导体区域(15)沿预定轴线(Ax)布置。 活性层(17)包括由六方晶系In x Ga 1-x N(0.16 <= x <= 0.4,x:应变组成)构成的阱层,其中铟组分x由应变组合物表示。 六边形In x Ga 1-x N的m面沿预定轴线(Ax)取向。 阱层厚度大于3nm且小于或等于20nm。 具有超过3nm的阱层厚度使得可以制造发射波长超过440nm的发光器件。
摘要:
In a nitride semiconductor light-emitting device (11), an emission region (17) has a quantum well structure (19), and lies between an n-type gallium nitride semiconductor region (13) and a p-type gallium nitride semiconductor region (15). The quantum well structure (19) includes a plurality of first well layers (21) composed of InxGa1-xN, one or a plurality of second well layers (23) composed of InyGa1-yN, and barrier layers (25). The first and second well layers (21) and (23) are arranged in alternation with the barrier layers (25). The second well layers (23) lie between the first well layers (21) and the p-type gallium nitride semiconductor region (15). The indium component y of the second well layers (23) is smaller than indium component x of the first well layers (21), and the thickness DW2 of the second well layers (23) is greater than the thickness DW1 of the first well layers (21).
摘要:
A method of making a nitride semiconductor laser comprises forming a first InGaN film for an active layer on a gallium nitride based semiconductor region, and the first InGaN film has a first thickness. In the formation of the first InGaN film, a first gallium raw material, a first indium raw material, and a first nitrogen raw material are supplied to a reactor to deposit a first InGaN for forming the first InGaN film at a first temperature, and the first InGaN has a thickness thinner than the first thickness. Next, the first InGaN is heat-treated at a second temperature lower than the first temperature in the reactor, while supplying a second indium raw material and a second nitrogen raw material to the reactor. Then, after the heat treatment, a second InGaN is deposited at least once to form the first InGaN film.
摘要:
A semiconductor device includes a supporting substrate, a conductive layer placed on the supporting substrate, and at least one group III nitride semiconductor layer placed on the conductive layer. Of the group III nitride semiconductor layers, a conductive-layer-neighboring group III nitride semiconductor layer has n type conductivity, dislocation density of at most 1×107 cm−2, and oxygen concentration of at most 5×1018 cm−3. Thus, an n-down type device having a semiconductor layer of high crystallinity can be provided.
摘要:
A method of making a nitride semiconductor laser comprises forming a first InGaN film for an active layer on a gallium nitride based semiconductor region, and the first InGaN film has a first thickness. In the formation of the first InGaN film, a first gallium raw material, a first indium raw material, and a first nitrogen raw material are supplied to a reactor to deposit a first InGaN for forming the first InGaN film at a first temperature, and the first InGaN has a thickness thinner than the first thickness. Next, the first InGaN is heat-treated at a second temperature lower than the first temperature in the reactor, while supplying a second indium raw material and a second nitrogen raw material to the reactor. Then, after the heat treatment, a second InGaN is deposited at least once to form the first InGaN film.
摘要:
Affords a manufacturing method enabling nitride-based semiconductor devices containing epitaxial films excelling in flatness and crystallinity to be easily produced. Method of manufacturing nitride semiconductor devices that are formed onto a semiconductor substrate being a compound containing nitrogen, and a Group IIIA element for forming compounds with nitrogen, including steps of: heating the semiconductor substrate (1) to a film-deposition temperature; supplying to the substrate a film-deposition gas containing a source gas for the Group IIIA element and a nitrogen source gas; and epitaxially growing onto the semiconductor substrate a thin film (2) of a compound containing nitrogen and the Group IIIA element; and being furnished with a step, in advance of the epitaxial growth step, of heating the semiconductor substrate to a pretreating temperature less than the film-deposition temperature, to clean the surface of the semiconductor substrate.
摘要:
Affords a manufacturing method enabling nitride-based semiconductor devices containing epitaxial films excelling in flatness and crystallinity to be easily produced. Method of manufacturing nitride semiconductor devices that are formed onto a semiconductor substrate being a compound containing nitrogen, and a Group IIIA element for forming compounds with nitrogen, including steps of: heating the semiconductor substrate (1) to a film-deposition temperature; supplying to the substrate a film-deposition gas containing a source gas for the Group IIIA element and a nitrogen source gas; and epitaxially growing onto the semiconductor substrate a thin film (2) of a compound containing nitrogen and the Group IIIA element; and being furnished with a step, in advance of the epitaxial growth step, of heating the semiconductor substrate to a pretreating temperature less than the film-deposition temperature, to clean the surface of the semiconductor substrate.
摘要:
Affords a manufacturing method enabling nitride-based semiconductor devices containing epitaxial films excelling in flatness and crystallinity to be easily produced, and makes available nitride-based semiconductor devices manufactured by the method. Method of manufacturing nitride semiconductor devices that are formed onto a semiconductor substrate being a compound containing a Group IIIA element for forming compounds with nitrogen, and nitrogen, including steps of heating the semiconductor substrate (1) to a film-deposition temperature, supplying to the substrate a film-deposition gas containing a source gas for the Group IIIA element and a nitrogen source gas, and epitaxially growing onto the semiconductor substrate a thin film (2) of a compound containing the Group IIIA element and nitrogen, and being furnished with a step, in advance of the epitaxial growth step, of heating the semiconductor substrate to a pretreating temperature less than the film-deposition temperature, to clean the surface of the semiconductor substrate.
摘要:
A group III nitride semiconductor light-emitting device comprises an n-type gallium nitride-based semiconductor layer, a first p-type AlXGa1-XN (0≦X
摘要翻译:III族氮化物半导体发光器件包括n型氮化镓基半导体层,第一p型AlXGa1-XN(0&lt; NlE; X <1)层,包含InGaN层的有源层, 和第三p型AlZGa1-XN层(0&amp; nlE; Z&lt; EL; Y&lt; NlE; X <1)和与第三p型AlZGa1相接触的p电极的第二p型AlYGa1-YN(0&nlE; Y& -ZN层。 有源层设置在n型氮化镓基半导体层和第一p型AlXGa1-XN层之间。 在第一p型AlXGa1-XN层上设置第二p型AlYGa1-YN(0&nlE; Y&nlE; X <1)层。 第二p型AlYGa1-YN层的p型掺杂剂浓度大于第一p型AlXGa1-XN层的p型掺杂剂浓度。 在第二p型AlYGa1-YN层上设置第三p型AlZGa1-ZN层(0&nlE; Z&lt; Y; Y&nlE; X <1)。 第二p型AlYGa1-YN层的p型掺杂剂浓度大于第三p型AlZGa1-ZN层的p型掺杂剂浓度。
摘要:
A group III nitride semiconductor light-emitting device comprises an n-type gallium nitride-based semiconductor layer, a first p-type AlXGa1-XN (0≦X
摘要翻译:III族氮化物半导体发光器件包括n型氮化镓基半导体层,第一p型AlXGa1-XN(0 <= X <1)层,包含InGaN层的有源层,第二p型 型AlYGa1-YN(0 <= Y <= X <1)层,第三p型AlZGa1-XN层(0 <= Z <= Y <= X <1) 第三个p型AlZGa1-ZN层。 有源层设置在n型氮化镓基半导体层和第一p型AlXGa1-XN层之间。 在第一p型AlXGa1-XN层上设置第二p型AlYGa1-YN(0 <= Y <= X <1)层。 第二p型AlYGa1-YN层的p型掺杂剂浓度大于第一p型AlXGa1-XN层的p型掺杂剂浓度。 在第二p型AlYGa1-YN层上设置第三p型AlZGa1-ZN层(0 <= Z <= Y <= X <1)。 第二p型AlYGa1-YN层的p型掺杂剂浓度大于第三p型AlZGa1-ZN层的p型掺杂剂浓度。