摘要:
In order to improve light-emission efficiency without degrading protection performance of a light-emitting layer structure a three p-type layer structure composed of first to third layers is provided in contact with a light-emitting layer structure. The first layer is an n-type AlGaN layer that serves as a protective layer, the third layer is a GaN:Mg layer that serves as a contact layer and the second layer is an AlGaN:Mg layer formed between these layers as an intermediate layer. The provision of the intermediate layer enables an InGaN layer to be thoroughly protected from heat during growth of layers above even if the n-type AlGaN layer is made thin, whereby the GaN:Mg layer can be brought near the light-emitting layer structure to enhance the efficiency of hole injection into the light-emitting layer structure and thus increase the light-emission efficiency.
摘要:
In order to improve light-emission efficiency without degrading protection performance of a light-emitting layer structure a three p-type layer structure composed of first to third layers is provided in contact with a light-emitting layer structure. The first layer is an n-type AlGaN layer that serves as a protective layer, the third layer is a GaN:Mg layer that serves as a contact layer and the second layer is an AlGaN:Mg layer formed between these layers as an intermediate layer. The provision of the intermediate layer enables an InGaN layer to be thoroughly protected from heat during growth of layers above even if the n-type AlGaN layer is made thin, whereby the GaN:Mg layer can be brought near the light-emitting layer structure to enhance the efficiency of hole injection into the light-emitting layer structure and thus increase the light-emission efficiency.
摘要:
In order to improve light-emission efficiency without degrading protection performance of a light-emitting layer structure a three p-type layer structure composed of first to third layers is provided in contact with a light-emitting layer structure. The first layer is an n-type AlGaN layer that serves as a protective layer, the third layer is a GaN:Mg layer that serves as a contact layer and the second layer is an AlGaN:Mg layer formed between these layers as an intermediate layer. The provision of the intermediate layer enables an InGaN layer to be thoroughly protected from heat during growth of layers above even if the n-type AlGaN layer is made thin, whereby the GaN:Mg layer can be brought near the light-emitting layer structure to enhance the efficiency of hole injection into the light-emitting layer structure and thus increase the light-emission efficiency.
摘要:
A group 3–5 compound semiconductor comprising an interface of two layers having lattice mismatch, an intermediate layer having a film thickness of 25 nm or more and a quantum well layer, in this order. The compound semiconductor has high crystallinity and high quality, and suitably used for a light emitting diode.
摘要:
In a semiconductor manufacturing system for manufacturing compound semiconductor by MOCVD, a lead-in member is provided for guiding feed gas supplied from a feed gas supply unit onto the surface of a semiconductor substrate disposed in a reactor, a main body of the lead-in member is constituted as a hollow member to form a feed gas guide passage for conducting the feed gas in an prescribed direction and is formed with multiple orifices, and the feed gas in the feed gas guide passage is jetted from the orifices in a direction perpendicular to the prescribed direction so that the semiconductor substrate is bathed in a feed gas flow of uniform amount jetted from the lead-in member in this manner. Furthermore, a pressure differential produced between the inner side and outer side of the nozzle member enables the feed gas jetted from the nozzle member to flow over the whole surface of the substrate at a uniform flow rate. The multiple feed gases are led to the vicinity of the substrate individually and the blow gas blows the multiple feed gases toward the substrate to favorably from desired thin film crystal.
摘要:
Provide is a 3-5 group compound semiconductor having a concentration of a p-type dopant of 1×1017 cm− or more and 1×1021 cm−3 or less, which can be laminated to control the carrier concentration of an InGaAlN-type mixed crystal in a low range with high reproducibility. Also provided is a 3-5 group compound semiconductor in which the carrier concentration of an InGaAlN-type mixed crystal is controlled in a low range with high reproducibility, and a light emitting device having high light emitting efficiency.
摘要翻译:提供具有1×10 17 cm -3以上且1×10 21 cm -3以下的p型掺杂剂浓度的3-5组化合物半导体,其可以层压以控制载体 浓度高的InGaAlN型混合晶体,重现性高。 还提供了以高重现性将InGaAlN型混晶体的载流子浓度控制在低范围内的3-5组化合物半导体和具有高发光效率的发光器件。
摘要:
The present invention provides a method for producing a group 3-5 nitride semiconductor and a method for producing a light emitting device. The method for producing a group 3-5 nitride semiconductor, comprises the steps of (i), (ii), (iii) and (iv) in this order: (i) placing inorganic particles on a substrate, (ii) growing a semiconductor layer, and (iii) separating the substrate and the semiconductor layer by irradiating the interface between the substrate and the semiconductor layer with light.
摘要:
A method for producing a group 3-5 nitride semiconductor includes the steps of (i), (ii), (iii) in this order: (i) placing inorganic particles on a substrate, (ii) epitaxially growing a semiconductor layer by using the inorganic particles as a mask, and (iii) separating the substrate and the semiconductor layer by irradiating the interface between the substrate and the semiconductor layer with light; and a method for producing a light emitting device further includes adding electrodes.
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:
Provided is an excellent p-type nitride type 3-5 group compound semiconductor having escellent electrical properties such as a low contact resistance to an electrode metal, a low ohmic property, etc., by heat-treating a nitride type 3-5 group compound semiconductor doped with p-type dopant in an hydrogen-containing gas atmosphere of a specific concentration.