摘要:
A process for formation of a hetero junction structured film utilizing V grooves is disclosed. A monocrystalline film 1 is etched into V grooves, and thereupon, a hetero film 2 having misfits is grown, so that dislocations would be intensively distributed within the V grooves. Then, an oxide layer 3 is formed thereupon, and then, the portions of the oxide layer 3 and the hereto film 2 corresponding to the V grooves are removed by carrying out an etching. Then, the residue oxide layer is removed, thereby forming a non-stress non-dislocation hetero junction structure. Further, the following steps can be added. That is, on the above structure, a thin oxide layer 3 is deposited by carrying out a thermal oxidation or a chemical deposition, and then, a polycrystalline silicon film 4 is deposited. Then the surface irregularities are smoothened by carrying out a selective grinding. Or the following steps may be added. That is, the V groove portions of the hetero film 2 and the monocrystalline film 1 are filled with a monocrystalline film, and the residue oxide layer 3 is removed. Thus a hetero junction film can be grown in which the stress effect is minimized, and the dislocation concentration is made to be extremely low.
摘要:
Methods for forming {110} type facets on a (001) oriented substrate of Group III-V compounds and Group IV semiconductors using selective epitaxial growth is provided. The methods include forming a dielectric film on a (100) substrate. The dielectric film can then be patterned to expose a portion of the substrate and to form a substrate-dielectric film boundary substantially parallel to a direction. A {110} type sidewall facet can then be formed by epitaxially growing a semiconductor layer on the exposed portion of the substrate and the dielectric film.
摘要:
The present disclosure relates to an electromagnetic energy detector. The detector can include a substrate having a first refractive index; a metal layer; an absorber layer having a second refractive index and disposed between the substrate and the metal layer; a coupling structure to convert incident radiation to a surface plasma wave; additional conducting layers to provide for electrical contact to the electromagnetic energy detector, each conducting layer characterized by a conductivity and a refractive index; and a surface plasma wave (“SPW”) mode-confining layer having a third refractive index that is higher than the second refractive index disposed between the substrate and the metal layer.
摘要:
A method for making a heteroepitaxial layer. The method comprises providing a semiconductor substrate. A seed area delineated with a selective growth mask is formed on the semiconductor substrate. The seed area comprises a first material and has a linear surface dimension of less than 100 nm. A heteroepitaxial layer is grown on the seed area, the heteroepitaxial layer comprising a second material that is different from the first material. Devices made by the method are also disclosed.
摘要:
A method of epitaxial growth of cubic phase, nitrogen-based compound semiconductor thin films on a semiconductor substrate, for example a substrate, which is periodically patterned with grooves oriented parallel to the crystal direction and terminated in sidewalls, for example sidewalls. The method can provide an epitaxial growth which is able to supply high-quality, cubic phase epitaxial films on a silicon substrate. Controlling nucleation on sidewall facets, for example , fabricated in every groove and blocking the growth of the initial hexagonal phase at the outer region of an epitaxial silicon layer with barrier materials prepared at both sides of each groove allows growth of cubic-phase thin film in each groove and either be extended to macro-scale islands or coalesced with films grown from adjacent grooves to form a continuous film. This can result in a wide-area, cubic phase nitrogen-based compound semiconductor film on a substrate.
摘要:
A plasmonic detector is described which can resonantly enhance the performance of infrared detectors. More specifically, the disclosure is directed to enhancing the quantum efficiency of semiconductor infrared detectors by increasing coupling to the incident radiation field as a result of resonant coupling to surface plasma waves supported by the metal/semiconductor interface, without impacting the dark current of the device, resulting in an improved detectivity over the surface plasma wave spectral bandwidth.
摘要:
A method of epitaxially growing nitrogen-based compound semiconductor thin films on a semiconductor substrate, which is periodically patterned with grooves. The method can provide an epitaxial growth of a first crystalline phase epitaxial film on the substrate, and block the growth of an initial crystalline phase with barrier materials prepared at the sides of the grooves. Semiconductor devices employing the epitaxial films are also disclosed.
摘要:
A method and structure for a semiconductor transistor, including various embodiments. In embodiments, a transistor channel can be formed between a semiconductor source and a semiconductor drain, wherein a transistor gate oxide completely surrounds the transistor channel and a transistor gate metal that completely surrounds the transistor gate oxide. Related fabrication processes are presented for similar device embodiments based on a Group III-V semiconductor material and silicon-on-insulator materials.
摘要:
A method and structure for a semiconductor transistor, including various embodiments. In embodiments, a transistor channel can be formed between a semiconductor source and a semiconductor drain, wherein a transistor gate oxide completely surrounds the transistor channel and a transistor gate metal that completely surrounds the transistor gate oxide. Related fabrication processes are presented for similar device embodiments based on a Group III-V semiconductor material and silicon-on-insulator materials.
摘要:
Methods for forming {110} type facets on a (001) oriented substrate of Group III-V compounds and Group IV semiconductors using selective epitaxial growth is provided. The methods include forming a dielectric film on a (100) substrate. The dielectric film can then be patterned to expose a portion of the substrate and to form a substrate-dielectric film boundary substantially parallel to a direction. A {110} type sidewall facet can then be formed by epitaxially growing a semiconductor layer on the exposed portion of the substrate and the dielectric film.