摘要:
Provided is a method of manufacturing a substrate for a light emitting diode including a convex section forming step and a crystallization/crystallizing step. According to the method and the substrate for the light emitting diode, light extraction is significantly improved and nano to micron sized pattern, economically formed.
摘要:
An epitaxial structure includes a substrate having an epitaxial growth surface, a first epitaxial layer, a graphene layer and a second epitaxial layer. The first epitaxial layer is stacked on the epitaxial growth surface. The graphene layer is coated on the first epitaxial layer. The second epitaxial layer is located on the first epitaxial layer and covers the graphene layer.
摘要:
A method for forming a graphite-based structure comprises patterning a substrate thereby forming a plurality of elements, each respective element in the plurality of elements separated from an adjacent element by a corresponding trench in a plurality of trenches on the substrate. A first element in the plurality of elements has a first surface. A first trench in the plurality of trenches separates the first element from an adjacent element in the plurality of elements, and the first trench has a second surface. The first surface and the second surface are separated by a first side wall of the first element. The method further comprises creating a graphene initiating layer on the first side wall of the first element. The method also comprises generating graphene using the graphene initiating layer thereby forming the graphite-based structure.
摘要:
According to the present invention, a method for manufacturing a compound semiconductor comprises: forming a graphene-derived material layer on either a first selected substrate or a first selected compound semiconductor layer; forming a second compound semiconductor layer of at least one layer on at least said graphene-derived material layer, and changing the graphene-derived material layer so as to separate said second compound semiconductor layer of at least one layer.
摘要:
Systems and methods of implementing barrier infrared detectors on lattice mismatched substrates are provided. The barrier infrared detector systems combine an active detector structure (e.g., contact/barrier/absorber pairs) with a non-lattice matched substrate through a multi-layered transitional structure that forms a virtual substrate that can be strain balanced with the detector structure. The transitional metamorphic layer may include one or both of at least one graded metamorphic buffer layer or interfacial misfit array (IMF). A further interfacial layer may be interposed within the transitional structure, in some embodiments this interfacial layer includes at least one layer of AlSb.
摘要:
A ZnSnO3/ZnO nanowire, a method of forming a ZnSnO3/ZnO nanowire, a nanogenerator including a ZnSnO3/ZnO nanowire, a method of forming a ZnSnO3 nanowire, and a nanogenerator including a ZnSnO3 nanowire are provided. The ZnSnO3/ZnO nanowire includes a core and a shell that surrounds the core, wherein the core includes ZnSnO3 and the shell includes ZnO.
摘要:
A method of fabricating a nitride semiconductor light emitting device is provided. The method includes growing a first group-III-nitride semiconductor layer on a substrate, the first group-III-nitride semiconductor layer having a top surface formed as a group-III-rich surface exhibiting a group-III-polarity and a bottom surface formed as a N-rich surface exhibiting a N-polarity. The method further includes selectively etching a N-polarity region in the top surface of the first group III nitride semiconductor layer, forming a second group III nitride semiconductor layer on the first group III nitride semiconductor layer to fill the etched N-polarity region and forming a light emitting structure including first and second conductivity type nitride semiconductor layers and an active layer on the second group III nitride semiconductor layer.
摘要:
This invention relates to methods of generating NP gallium nitride (GaN) across large areas (>1 cm2) with controlled pore diameters, pore density, and porosity. Also disclosed are methods of generating novel optoelectronic devices based on porous GaN. Additionally a layer transfer scheme to separate and create free-standing crystalline GaN thin layers is disclosed that enables a new device manufacturing paradigm involving substrate recycling. Other disclosed embodiments of this invention relate to fabrication of GaN based nanocrystals and the use of NP GaN electrodes for electrolysis, water splitting, or photosynthetic process applications.
摘要:
A method of manufacturing a semiconductor device according to one aspect of the present invention includes a step of forming a first layer of InAlN, a step of forming a second layer of InAlGaN on the first layer under a growth temperature higher than that of the first layer, and a step of forming a third layer of GaN, AlGaN or InGaN under a growth temperature higher than that of the first layer.
摘要:
Methods of fabricating photovoltaic devices include forming a plurality of subcells in a vertically stacked arrangement on a semiconductor material, each of the subcells being formed at a different temperature than an adjacent subcell such that the adjacent subcells have differing effective band-gaps. The methods of fabricating also include inverting the structure, attaching another substrate to a second semiconductor material, and removing the substrate. For example, each of the subcells may comprise a III-nitride material, and each subsequent subcell may include an indium content different than the adjacent subcell. Novel structures may be formed using such methods.