摘要:
A semiconductor device that has excellent characteristics and mass productivity wherein the introduction of defects thereinto at the time of device separation is prevented, and a method for producing the semiconductor device. In particular, there is provided a high-performance semiconductor device having excellent luminous efficiency, longevity and mass productivity; and a method for producing this semiconductor device. The method for producing the semiconductor device has a step of forming, between a substrate comprising zinc oxide (ZnO) and a device operating layer, a defect-blocking layer having a crystal composition that is different from that of the substrate, and a step of forming device dividing grooves to a depth that goes beyond the defect-blocking layer, relative to the device operating layer side surface of the substrate on which the device operating layer is formed.
摘要:
A method which has a step of growing a thermostable-state ZnO-based single crystal on a ZnO single crystal substrate at a growth temperature that is equal to or greater than 600° C. and less than 900° C. by using a metalorganic compound containing no oxygen and water vapor based on an MOCVD method.
摘要:
A light emitting device includes a lower semiconductor layer of a first conductivity type; an optical emission layer formed on said lower semiconductor layer; an upper semiconductor layer of a second conductivity type opposite to said first conductivity type, said upper semiconductor layer being formed on said optical emission layer; a lower side electrode electrically connected to said lower semiconductor layer; and an upper side electrode electrically connected to said upper semiconductor layer, wherein said upper side electrode is formed on said upper semiconductor layer, and said upper semiconductor layer has a mesh pattern defining a plurality of sections each surrounded by said upper side electrode, and wherein at least one dent is disposed in at least one of said sections, said dent having a bottom reaching at least an upper surface of said lower semiconductor layer and having an opening with an upper edge spaced apart from said upper side electrode.
摘要:
A light emitting device includes a lower semiconductor layer of a first conductivity type; an optical emission layer formed on said lower semiconductor layer; an upper semiconductor layer of a second conductivity type opposite to said first conductivity type, said upper semiconductor layer being formed on said optical emission layer; a lower side electrode electrically connected to said lower semiconductor layer; and an upper side electrode electrically connected to said upper semiconductor layer, wherein said upper side electrode is formed on said upper semiconductor layer, and said upper semiconductor layer has a mesh pattern defining a plurality of sections each surrounded by said upper side electrode, and wherein at least one dent is disposed in at least one of said sections, said dent having a bottom reaching at least an upper surface of said lower semiconductor layer and having an opening with an upper edge spaced apart from said upper side electrode.
摘要:
A GaN compound semiconductor device can be capable of free process design and can have optimum device characteristics. The device can include a group III nitride compound semiconductor laminate structure including an n-type GaN compound semiconductor layer and a p-type GaN compound semiconductor layer. An n electrode can be formed on the n-type GaN compound semiconductor layer, and a p electrode can be formed on the p-type GaN compound semiconductor layer. The n electrode preferably includes an Al layer of 1 to 10 nm, in contact with the n-type GaN compound semiconductor layer, and any metal layer of Rh, Ir, Pt, and Pd formed on the Al layer. The p electrode can be made of a 200 nm or less layer of of Pd, Pt, Rh, Pt/Rh, Pt/Ag, Rh/Ag, Pd/Rh, or Pd/Ag, in contact with the p-type GaN compound semiconductor layer. Both electrodes can make ohmic contact with respective n-type/p-type GaN semiconductors without application of active annealing.
摘要:
A luminous lamination structure includes a first layer made of n-type nitride semiconductor and a second layer made of p-type nitride semiconductor and disposed over the first layer wherein a luminous region is defined between the first and second layers. The second layer is removed to expose the first layer in a first area which is a partial surface of the first layer. A p-side electrode is disposed on a surface of the second layer and electrically connected to the second layer. An insulating film covers the p-side electrode. An n-side electrode electrically connected to the first layer is disposed in the first area. A reflection film disposed on the insulating film extends to the n-side electrode and electrically connected to the n-side electrode. The reflection film is made of silver containing alloy or silver.
摘要:
A GaN compound semiconductor device can be capable of free process design and can have optimum device characteristics. The device can include a group III nitride compound semiconductor laminate structure including an n-type GaN compound semiconductor layer and a p-type GaN compound semiconductor layer. An n electrode can be formed on the n-type GaN compound semiconductor layer, and a p electrode can be formed on the p-type GaN compound semiconductor layer. The n electrode preferably includes an Al layer of 1 to 10 nm, in contact with the n-type GaN compound semiconductor layer, and any metal layer of Rh, Ir, Pt, and Pd formed on the Al layer. The p electrode can be made of a 200 nm or less layer of of Pd, Pt, Rh, Pt/Rh, Pt/Ag, Rh/Ag, Pd/Rh, or Pd/Ag, in contact with the p-type GaN compound semiconductor layer. Both electrodes can make ohmic contact with respective n-type/p-type GaN semiconductors without application of active annealing.