Abstract:
A nitride based compound semiconductor, a cleaning method and a manufacturing method of the same, and a substrate are provided to prevent attachment of impurities or particles on a surface thereof by improving a cleaning method. A method for cleaning a nitride-based compound semiconductor includes a process for preparing a nitride-based compound semiconductor(S10). The method further includes a process for cleaning the nitride-based compound semiconductor by using a cleaning liquid having a pH of 7.1 and more(S20). The method further includes a postprocess(S30). The cleaning liquid includes at least one selected from a group comprising alkaline solution, organic alkaline solvent, and electrolyzed ion water.
Abstract:
PURPOSE: A method for manufacturing group III nitride semiconductor layer-bonded substrate is provided to maintain the morphology of a major surface of a group III nitride semiconductor layer by performing an annealing process at a temperature of 950°C or greater. CONSTITUTION: At least one ion of hydrogen and helium is inserted into the region of the predetermined depth from one side major surface of the III family nitride semiconductor substrate(20). A biconstituent substrate(10) is welded on the major surface of the III family nitride semiconductor substrate. The group III nitride semiconductor layer-bonded substrate is separated from a region(20i) in which the ion is injected. The group III nitride semiconductor layer bonded substrate(1) is obtained through a separation process.
Abstract:
A Group III element nitride substrate on which an epitaxial layer of good quality can be grown; and a process for producing the substrate. The Group III element nitride substrate may be a GaN substrate (1) which satisfies any of the following requirements. It has a surface (3) in which the number of atoms constituting any acid substance(s) is 2X1014 or smaller per cm2 and the number of silicon atoms is 3X1013 or smaller per cm2. It has a surface (3) in which the number of silicon atoms is 3X1013 or smaller per cm2 and which has a haze level of 5 ppm or less. It has a surface (3) in which the number of atoms constituting any acid substance(s) is 2X1014 or smaller per cm2 and which has a haze level of 5 ppm or less.
Abstract:
본 반도체 디바이스(5)는 지지 기판(60)과, 지지 기판(60) 상에 배치된 도전층(50)과, 도전층(50) 상에 배치된 적어도 1층의 III족 질화물 반도체층(200)을 포함하고, III족 질화물 반도체층(200) 중 도전층(50)에 인접하는 도전층 인접 III족 질화물 반도체층(200c)은 n형 도전성을 가지며, 전위 밀도가 1×10 7 ㎝ -2 이하이고, 산소 농도가 5×10 18 ㎝ -3 이하이다. 이에 따라, 결정성이 높은 반도체층을 갖는 n-down형의 반도체 디바이스가 제공된다.
Abstract:
A damage evaluation method of a compound semiconductor member, a production method of a compound semiconductor member, a gallium nitride compound semiconductor member, and a gallium nitride compound semiconductor membrane are provided to evaluate accurately damage on a surface of the compound semiconductor member by using a spectrum method. A measurement process is executed to perform a spectroscopic ellipsometry measurement on a surface of a compound semiconductor member(S1). An evaluation process is performed to evaluate damage on the surface of the compound semiconductor member by using a spectrum in a wavelength band containing a wavelength corresponding to a band gap of the compound semiconductor member in a spectrum of an optical constant obtained by the spectroscopic ellipsometry measurement(S2).
Abstract:
본 보호막 부착 복합 기판(2Q)은, 지지 기판(10)과, 지지 기판(10) 상에 배치된 산화물막(20)과, 산화물막(20) 상에 배치된 반도체층(30a)과, 산화물막(20) 중 지지 기판(10) 및 반도체층(30a) 중 어느 것으로도 덮여 있지 않은 부분(20s, 20t)을 덮음으로써 산화물막(20)을 보호하는 보호막(40)을 포함한다. 본 반도체 디바이스의 제조 방법은, 보호막 부착 복합 기판(2Q)을 준비하는 공정과, 보호막 부착 복합 기판(2Q)의 반도체층(30a) 상에, 반도체 디바이스로서의 기능을 발현시키는 적어도 1층의 기능 반도체층을 에피택셜 성장시키는 공정을 포함한다. 이에 따라, 고품질의 기능 반도체층을 에피택셜 성장시킬 수 있는 유효 영역이 큰 보호막 부착 복합 기판, 및 이러한 보호막 부착 복합 기판을 이용한 반도체 디바이스의 제조 방법을 제공한다.
Abstract:
본 III족 질화물 복합 기판(1)은, 지지 기판(10)과, 지지 기판(10) 상에 형성되어 있는 산화물막(20)과, 산화물막(20) 상에 형성되어 있는 III족 질화물층(30a)을 포함한다. 여기서, 산화물막(20)은, TiO 2 막 및 SrTiO 3 막으로 이루어진 군으로부터 선택되는 어느 하나의 막으로 할 수 있고, 불순물을 첨가할 수 있다. 이에 따라, 지지 기판과 III족 질화물층과의 접합 강도가 높은 III족 질화물 복합 기판이 제공된다.
Abstract:
A damage evaluation method of a compound semiconductor member, a production method thereof, a gallium nitride compound semiconductor member, and a gallium nitride compound semiconductor membrane are provided to evaluate a degree of damage on a surface of the compound semiconductor member in detail by improving the evaluation method. A photoluminescence measurement process measures photoluminescence on a surface of a compound semiconductor member(S1). An evaluation process is performed to evaluate damage on the surface of the compound semiconductor member by using a half width of a peak at a wavelength corresponding to a band gap of the compound semiconductor member in an emission spectrum(S2). The emission spectrum is obtained by the photoluminescence measurement process.
Abstract:
본 발명에 따르면 양호한 품질의 에피택셜 성장층을 형성하는 것이 가능한 III족 질화물 기판 및 그 제조 방법을 얻을 수 있다. III족 질화물 기판으로서의 GaN 기판(1)은 이하 중 어느 하나의 것이다. 표면(3)의 1 ㎠당 산성 물질의 원자의 갯수가 2×10 14 이하이며, 상기 표면(3)의 1 ㎠당 실리콘 원자의 갯수가 3×10 13 이하이다. 표면(3)의 1 ㎠당 실리콘 원자의 갯수가 3×10 13 이하이며, 상기 표면(3)의 헤이즈 레벨(haze level)은 5 ppm 이하이다. 표면(3)의 1 ㎠당 산성 물질의 원자의 갯수가 2×10 14 이하이며, 상기 표면(3)의 헤이즈 레벨은 5 ppm 이하이다.
Abstract:
An III-Vgroup nitride semiconductor layer bonded substrate and a semiconductor device are provided to fabricate the high performance semiconductor device by considering the thermal expansion coefficient difference between the III-V group nitride semiconductor layer and the underlying substrate. An III-V group nitride semiconductor layer bonded substrate(1) is comprised of an III-V group nitride semiconductor layer(20) and an underlying substrate(10) welded into the III-V group nitride semiconductor layer. The difference alphaL-alphaS of the coefficient of thermal expansion(alphaS) of the underlying substrate and the coefficient of thermal expansion(alphaL) of the III-V group nitride semiconductor layer are 4.5x10^-6xK^-1 or less. A thermal conductivity(lambdaS) of the III-V group nitride semiconductor layer bonded substrate is 50 W.m^-1xK^-1 or greater. The III-V group nitride semiconductor layer can be the GaN layer.
Abstract translation:提供III-V族氮化物半导体层接合衬底和半导体器件,以通过考虑III-V族氮化物半导体层和下层衬底之间的热膨胀系数差来制造高性能半导体器件。 III-V族氮化物半导体层键合衬底(1)由III-V族氮化物半导体层(20)和焊接在III-V族氮化物半导体层中的下层衬底(10)组成。 下面的衬底的热膨胀系数(αS)和III-V族氮化物半导体层的热膨胀系数(αL)的差异αL-αS为4.5×10 -6 -6 K K -1或更小。 III-V族氮化物半导体层键合衬底的热导率(λS)为50W·m -1 -1×K -1 -1或更大。 III-V族氮化物半导体层可以是GaN层。