摘要:
Provided are: a gallium oxide single crystal composite, which can provide, for example, upon a crystal growth of a nitride semiconductor, a high-quality cubic crystal in which mixing of a hexagonal crystal is reduced to thereby realize dominant growth of a cubic crystal over hexagonal crystal, and which can be utilized as a substrate particularly suitable for epitaxial growth of cubic GaN; a process for producing the same; and a process for producing a nitride semiconductor film. The gallium oxide single crystal composite has a gallium nitride layer formed of cubic gallium nitride on a surface of the gallium oxide single crystal; the process for producing the gallium oxide single crystal composite includes subjecting the surface of gallium oxide single crystal to nitriding treatment using ECR plasma or RF plasma to form the gallium nitride layer formed of cubic gallium nitride on the surface of the gallium oxide single crystal; and further, the process for producing the nitride semiconductor film includes growing the nitride semiconductor film on the surface of the gallium oxide single crystal composite by an RF-MBE method.
摘要:
An optical electronic integrated circuit comprises: a silicon substrate; an electronic circuit formed in the silicon substrate and processing an electric signal; a ZnO film formed on at least portion of the silicon substrate; and an optical circuit electrically connected to the electronic circuit. The optical circuit includes at least one GaN-based semiconductor compound layer which is provided on the ZnO film, and the GaN-based compound semiconductor layer either receives or emits an optical signal.
摘要:
A method for forming a GaN-based semiconductor layer includes the steps of: forming a ZnO buffer layer on one of a glass substrate and a silicon substrate; and epitaxially growing a GaN-based semiconductor layer on the ZnO buffer layer by using an electron cyclotron resonance--molecular beam epitaxy (ECR-MBE) method.
摘要:
A semiconductor light emitting device includes: a substrate; a ZnO buffer layer formed on the substrate; and a GaN-based light emitting layer formed on the ZnO buffer layer. The ZnO buffer layer has an average crystalline grain size of ZnO grains of about 0.45 &mgr;m or more, or 0.12 &mgr;m or less.
摘要:
A method for forming a GaN-based semiconductor layer includes the steps of: forming a ZnO buffer layer on one of a glass substrate and a silicon substrate; and epitaxially growing a GaN-based semiconductor layer on the ZnO buffer layer by using an electron cyclotron resonance-molecular beam-epitaxy (ECR-MBE) method.
摘要:
A process for manufacturing boron-doped GaAs single crystals which comprises preparing a mixture of boron, gallium and arsenic covered by a liquid B.sub.2 O.sub.3 encapsulant, melting the mixture, pulling up boron-doped GaAs crystals from the mixture melts in accordance with the LEC method, crushing those crystals into small pieces after removing the seed end therefrom, remelting those pieces in the presence of B.sub.2 O.sub.3, and pulling up single crystals from the mixture melts in accordance with the LEC method.
摘要翻译:一种硼掺杂GaAs单晶的制造方法,其包括制备由液体B 2 O 3密封剂覆盖的硼,镓和砷的混合物,熔融混合物,从混合物中拉出掺杂硼的GaAs晶体根据LEC方法熔融, 从中除去种子末端后,将这些晶体粉碎成小块,在B2O3存在下重熔这些晶片,并从混合物中拉出单晶,按照LEC方法熔化。