摘要:
A group 3-5 nitride semiconductor multilayer substrate (1) and a method for manufacturing such substrate are provided. A semiconductor layer (12) is formed on a base substrate (11), and a mask (13) is formed on the semiconductor layer (12). Then, after forming a group 3-5 nitride semiconductor crystalline layer (14) by selective growing, the group 3-5 nitride semiconductor crystalline layer (14) and the base substrate (11) are separated. The crystallinity of the semiconductor layer (12) is lower than that of the group 3-5 nitride semiconductor crystalline layer (14).
摘要:
A group 3-5 nitride semiconductor multilayer substrate (1) and a method for manufacturing such substrate are provided. A semiconductor layer (12) is formed on a base substrate (11), and a mask (13) is formed on the semiconductor layer (12). Then, after forming a group 3-5 nitride semiconductor crystalline layer (14) by selective growing, the group 3-5 nitride semiconductor crystalline layer (14) and the base substrate (11) are separated. The crystallinity of the semiconductor layer (12) is lower than that of the group 3-5 nitride semiconductor crystalline layer (14).
摘要:
The present invention relates to a method for producing an epitaxial substrate having a III-V group compound semiconductor crystal represented by the general formula InxGayAlzN (wherein, x+y+z=1, 0≦x≦1, 0≦y≦1, 0≦z≦1) having reduced dislocation density, comprising a first step of covering with a mask made of a different material from the III-V group compound semiconductor so that only portions around points of the crystal constitute openings by using a III-V group compound semiconductor crystal having a plurality of projection shapes and a second step of growing the III-V group compound semiconductor crystal laterally by using the III-V group compound semiconductor crystal at the opening as a seed crystal. According to the present invention, an epitaxial substrate having a III-V group compound semiconductor crystal having low dislocation density and little warp is obtained.
摘要翻译:本发明涉及一种用于制造具有由通式为III-V族化合物半导体晶体表示的外延基板的方法,该III-V族化合物半导体晶体由以下通式表示:&lt; N(其中,x + y + z = 1,0 <= x <=1,0,0≤i≤1,0<= z <= 1)具有降低的位错密度,包括第一步覆盖 具有由与III-V族化合物半导体不同的材料制成的掩模,使得通过使用具有多个投影形状的III-V族化合物半导体晶体,仅使晶体周围的部分构成开口,第二步是使 III-V族化合物半导体晶体通过在开口处使用III-V族化合物半导体晶体作为晶种横向。 根据本发明,获得具有位错密度低且翘曲少的III-V族化合物半导体晶体的外延基板。
摘要:
The present invention relates to a method for producing an epitaxial substrate having a III-V group compound semiconductor crystal represented by the general formula InxGayAlzN (wherein, x+y+z=1, 0≦x≦1, 0≦y≦1, 0≦z≦1) having reduced dislocation density, comprising a first step of covering with a mask made of a different material from the III-V group compound semiconductor so that only portions around points of the crystal constitute openings by using a III-V group compound semiconductor crystal having a plurality of projection shapes and a second step of growing the III-V group compound semiconductor crystal laterally by using the III-V group compound semiconductor crystal at the opening as a seed crystal. According to the present invention, an epitaxial substrate having a III-V group compound semiconductor crystal having low dislocation density and little warp is obtained.
摘要翻译:本发明涉及一种用于制造具有由通式为III-V族化合物半导体晶体表示的外延基板的方法,该III-V族化合物半导体晶体由以下通式表示:&lt; N(其中,x + y + z = 1,0 <= x <=1,0,0≤i≤1,0<= z <= 1)具有降低的位错密度,包括第一步覆盖 具有由与III-V族化合物半导体不同的材料制成的掩模,使得通过使用具有多个投影形状的III-V族化合物半导体晶体,仅使晶体周围的部分构成开口,第二步是使 III-V族化合物半导体晶体通过在开口处使用III-V族化合物半导体晶体作为晶种横向。 根据本发明,获得具有位错密度低且翘曲少的III-V族化合物半导体晶体的外延基板。
摘要:
Provided is a method of producing a group III-V compound semiconductor having a low dislocation density without increasing the thickness of a re-grown layer, the method includes a re-growing process using a mask pattern, and threading dislocations in the re-grown layer are terminated by the voids formed on the pattern.
摘要:
Provided is a III-V compound semiconductor having a layer formed from a first III-V compound semiconductor expressed by the general formula InuGavAlwN (where 0≦u≦1, 0≦v≦1, 0≦w≦1, u+v+w=1), a pattern formed on the layer from a material different not only from the first III-V compound semiconductor but also from a second III-V compound semiconductor hereinafter described, and a layer formed on the first III-V compound semiconductor and the pattern from the second III-V compound semiconductor expressed by the general formula InxGayAlzN (where 0≦x≦1, 0≦y≦1, 0≦x≦1, x+y+z=1), wherein the full width at half maximum of the (0004) reflection X-ray rocking curve of the second III-V compound semiconductor is 700 seconds or less regardless of the direction of X-ray incidence. In the III-V compound semiconductor, which is a high quality semiconductor, the occurrence of low angle grain boundaries is suppressed.
摘要翻译:提供了具有由通式InuGavAlwN表示的第一III-V族化合物半导体形成的层的III-V族化合物半导体(其中0≤u≤1,0<=v≤1,0<= w < 1,u + v + w = 1),从不同于第一III-V族化合物半导体的材料形成在该层上的图案,以及由下文所述的第二III-V族化合物半导体形成的层 第一III-V族化合物半导体和由通式InxGayAlzN表示的第二III-V族化合物半导体的图案(其中0 <= x <= 1,0 <= y <=1,0,0≤x≤1,x + y + z = 1),其中,与X射线入射方向无关地,第二III-V族化合物半导体的(0004)反射X射线摇摆曲线的半峰全宽为700秒以下。 在作为高质量半导体的III-V族化合物半导体中,抑制了低角度晶界的发生。
摘要:
A method for fabricating a GaN-based III-V Group compound semiconductor is provided that utilizes a regrowth method based on the HVPE method to form a second III-V Group compound semiconductor layer having a flat surface on a first III-V Group compound semiconductor layer formed with a mask layer. The method uses a mixed carrier gas of hydrogen gas and nitrogen gas to control formation of a facet group including at least the {33-62} facet by the regrowth, and conducting the regrowth until a plane parallel to the surface of the first III-V Group compound semiconductor layer is once annihilated, thereby fabricating a III-V Group compound semiconductor having low dislocation density.
摘要:
When a crystal layer of III-V Group nitride compound semiconductor is formed, a nitride compound semiconductor layer is first overlaid on a substrate to form a base layer and a III-V Group nitride compound semiconductor represented by the general formula InxGayAlzN (where 0≦x≦1, 0≦y≦1, 0≦z≦1, x+y+z=1) is epitaxially grown on the base layer by hydride vapor phase epitaxy at a deposition pressure of not lower than 800 Torr. By making the deposition pressure not lower than 800 Torr, the crystallinity of the III-V Group nitride compound semiconductor can be markedly improved and its defect density reduced.
摘要翻译:当形成III-V族氮化物化合物半导体的晶体层时,首先将氮化物化合物半导体层重叠在基板上以形成基底层,并且由通式In x x表示的III-V族氮化物化合物半导体 (其中0≤x≤1,0<= y <=1,0,0≤z≤1,x + y + z = 1)在不低于800托的沉积压力下通过氢化物气相外延在基底层上外延生长。 通过使沉积压力不低于800托,III-V族氮化物化合物半导体的结晶度可以显着提高,并且其缺陷密度降低。