Abstract:
A solar cell apparatus (100) and a method (400) for forming said solar cell apparatus (100), comprising a substrate (101), a n-type transparent conductive oxide (TCO) layer (102) deposited over said substrate (101), a p-i-n structure (200) that includes a p-type layer (103), an i-type layer (104), said n-type layer (105), a metal back layer (106) deposited over said n-type layer (105) of the p-i-n structure (200). The p-type layer (103) comprises a p-type dopants graded multi-layers structure (3) that has a dopants concentration profile that varies as a function of the thickness of the p-type dopants graded multi-layers structure (3).
Abstract:
A method for manufacturing a semiconductor structure with reduced bowing for applications in the field of power electronics, photonics, optoelectronics, solar energy conversion and the like, which comprises: - a step of providing at least a first layer of a first semiconductor material, said first layer comprising a substrate of said first semiconductor material, which extends along a first reference plane, and a plurality of first portions of said first semiconductor material, which are mutually spaced and extend in elevation from said substrate along axes perpendicular to said first reference plane, said first portions having ends in distal position with respect to said substrate; - a step of providing at least a second layer of a second semiconductor material, said second layer comprising second portions of said second semiconductor material, each of which is joined to the ends of a plurality of said first portions, said second portions being mutually spaced and extending along a second reference plane parallel to said first reference plane; The first portions of the first layer are produced with an aspect ratio that depends on a dimension of said second portions, measured along said second reference plane. In a further aspect thereof, the invention relates to a semiconductor structure for applications in the field of power electronics, photonics, optoelectronics, solar energy conversion and the like.
Abstract:
Structure (1) pour des applications radiofréquences comprenant : • un substrat support (2) semi-conducteur; • une couche de piégeage (3) disposée sur le substrat support (2); la couche de piégeage (3) étant caractérisée en ce qu'elle comprend une densité de défauts supérieure à une densité de défauts prédéterminée; la densité de défauts prédéterminée est la densité de défauts au-delà de laquelle la résistivité électrique de la couche de piégeage (3) est supérieure ou égale à 10kohm.cm sur une gamme de température [- 20°C; +120°C].
Abstract:
A method for integrating epitaxial, metallic transition metal nitride (TMN) layers within a compound semiconductor device structure. The TMN layers have a similar crystal structure to relevant semiconductors of interest such as silicon carbide (SiC) and the Group Ill-Nitrides (III-Ns) such as gallium nitride (GaN), aluminum nitride (A1N), indium nitride (InN), and their various alloys. Additionally, the TMN layers have excellent thermal stability and can be deposited in situ with other semiconductor materials, allowing the TMN layers to be buried within the semiconductor device structure to create semiconductor/metal/semiconductor heterostructures and superlattices.
Abstract:
A heating device (100) for heating the surface of a substrate (140). The heating device comprises a gas source (110) comprising an inert material supply inert under the operating conditions of the heating device, the gas source being adapted for supplying a hot jet of a gas comprising at least elements of said inert material on the substrate (140). The gas source (110) is adapted for heating the hot jet of the gas to a temperature above 1500°C.