摘要:
A semiconductor light emitting device or a semiconductor device produced using a nitride type III-V group compound semiconductor substrate on which a plurality of second regions made of a crystal having a second average dislocation density are regularly arranged in a first region made of a crystal having a first average dislocation density so as to produce the structured substrate, the second average dislocation density being greater than the first average dislocation density, a light emitting region of the semiconductor light emitting device or an active region of the semiconductor device is formed in such a manner that it does not pass through any one of the second regions.
摘要:
A nitride semiconductor laser device is formed by growing a group III nitride semiconductor multilayer structure on a substrate containing no Al. The group III nitride semiconductor multilayer structure forms a structure including an n-type semiconductor layer, a p-type semiconductor layer, and a light emitting layer held between the n-type semiconductor layer and the p-type semiconductor layer. The n-type semiconductor layer includes an n-type cladding layer containing Al and an n-type guide layer having a smaller band gap than the n-type cladding layer. The p-type semiconductor layer includes a p-type cladding layer containing Al and a p-type guide layer having a smaller band gap than the p-type cladding layer. A removal region is formed by partially removing the layers containing Al in the group III nitride semiconductor multilayer structure from the substrate.
摘要:
A semiconductor laser device having a cladding layer in the vicinity of an active layer capable of being inhibited from cracking is obtained. This semiconductor laser device (100) includes a first semiconductor device portion (120) and a support substrate (10) bonded to the first semiconductor device portion, and the first semiconductor device portion has a cavity, a first conductivity type first cladding layer (22) having a first region (22a) having a first width in a second direction (direction A) intersecting with a first direction (direction B) in which the cavity extends and a second region (22b) having a second width smaller than the first width in the second direction, formed on the first region, and a first active layer (23) and a second conductivity type second cladding layer (24) formed on the second region of the first cladding layer.
摘要:
A method of manufacturing a semiconductor laser device includes steps of forming a third oblong substrate by bonding a first oblong substrate and a second oblong substrate, and dividing the third oblong substrate so that first side surfaces of the first semiconductor laser devices protrude sideward from positions formed with third side surfaces of the second semiconductor laser devices while the fourth side surfaces of the second semiconductor laser devices protrude sideward from positions formed with the second side surfaces of the first semiconductor laser devices, and the first electrodes are located on protruding regions of the first semiconductor laser devices.
摘要:
A method for manufacturing a semiconductor light emitting element from a wafer in which a gallium nitride compound semiconductor has been laminated on a sapphire substrate having an orientation flat, comprises of: laminating a semiconductor layer on a first main face of the sapphire substrate having an off angle θ in a direction Xo parallel to the orientation flat; forming a first break groove that extends in a direction Y substantially perpendicular to the direction Xo, on the semiconductor layer side; forming a second break line that is shifted by a predetermined distance in the ±Xo direction from a predicted split line within the first break groove and parallel to the first break groove in the interior of the sapphire substrate and corresponding to the inclination of the off angle θ; and splitting the wafer along the first and/or second break line.
摘要:
A nitride semiconductor stacked structure having good working efficiency includes a p-type nitride semiconductor layer of low resistance, which is formed from an organometallic compound, compounds including Group V elements, including ammonia and a hydrazine derivative, and a p-type impurity material on a substrate. The p-type nitride layer has a carbon concentration not higher than 1×1018 cm−3.
摘要:
The present invention is to provide a semiconductor laser device manufacturing method for realizing highly reliable semiconductor laser devices. The semiconductor laser device manufacturing method includes: cutting a wafer into bar-shaped wafers by scanning an electron beam on the front side of the wafer on which a semiconductor laser structure has been formed so as to cause cracks which trigger the cutting of the wafer; and depositing front and back coating films on the end faces, which have been newly exposed by the cutting of the wafer, of the cut wafers. In the method the cut wafers are transferred in a non-ambient atmosphere at a time between the cutting of the wafer and the depositing of the end face coating films.
摘要:
A semiconductor laser having a high electrostatic withstand voltage, resistant to a power supply surge, and having improved long-term reliability is obtained by reducing current leakage through a threading dislocation portion. The semiconductor laser includes a substrate having a high dislocation region having a dislocation density of 1×105 cm−2 or more, a crystalline semiconductor structure located on the substrate and having an active layer, an insulating film located on the semiconductor structure, a surface electrode located on the insulating film and electrically continuous with the semiconductor structure for injection of a current into the active layer, and a back electrode located on a rear surface of the substrate. The semiconductor laser has a laser resonator with a length L, and the area of the surface electrode is 120×L μm2 or less.
摘要翻译:通过减少通过穿透位错部分的电流泄漏,获得具有耐电源浪涌的高静电耐受电压并且具有改善的长期可靠性的半导体激光器。 半导体激光器包括具有位错密度为1×10 5 cm -2以上的高位错区域的基板,位于基板上并具有有源层的结晶半导体结构,位于半导体结构上的绝缘膜,表面 电极,位于绝缘膜上并与用于将电流注入有源层的半导体结构电连续,以及位于衬底的后表面上的背电极。 半导体激光器具有长度为L的激光谐振器,表面电极的面积为120×Lμm2以下。
摘要:
A nitride-based semiconductor device includes an n-type nitride-based semiconductor layer, and an n-side electrode having a first metal layer made of Al, formed on a surface of the n-type nitride-based semiconductor layer and a second metal layer made of Hf formed so as to cover a surface of the first metal layer on a side opposite to the n-type nitride-based semiconductor layer.
摘要:
A nitride-based semiconductor light-emitting device capable of suppressing reduction of characteristics and a yield and method of fabricating the same is described. The method of fabricating includes the steps of forming a groove portion on a nitride-based semiconductor substrate by selectively removing a prescribed region of a second region of the nitride-based semiconductor substrate other than a first region corresponding to a light-emitting portion of a nitride-based semiconductor layer up to a prescribed depth and forming the nitride-based semiconductor layer having a different composition from the nitride-based semiconductor substrate on the first region and the groove portion of the nitride-based semiconductor substrate.