Abstract:
This disclosure provides methods for forming a perovskite film. Exemplary methods can include the steps of forming an amorphous layer on a substrate disposed in a reaction chamber, covering at least a portion of the amorphous layer with a barrier that at least partially prevents the first metal, the second metal, oxygen atoms, or a combination thereof from being released during annealing and annealing the amorphous layer to form a perovskite film. Formation of the amorphous layer on the substrate disposed in a reaction chamber may be effected by introducing a first compound comprising a first metal; introducing an oxidizing agent; and introducing a second compound comprising a second metal.
Abstract:
This disclosure provides methods for forming a perovskite film. Exemplary methods can include the steps of forming an amorphous layer on a substrate disposed in a reaction chamber, covering at least a portion of the amorphous layer with a barrier that at least partially prevents the first metal, the second metal, oxygen atoms, or a combination thereof from being released during annealing and annealing the amorphous layer to form a perovskite film. Formation of the amorphous layer on the substrate disposed in a reaction chamber may be effected by introducing a first compound comprising a first metal; introducing an oxidizing agent; and introducing a second compound comprising a second metal.
Abstract:
A process for forming graphene, including : depositing at least two metals onto a surface of silicon carbide (SiC), the at least two metals including at least one first metal and at least one second metal; and heating the SiC and the first and second metals under conditions that cause the at least one first metal to react with silicon of the silicon carbide to form carbon and at least one stable silicide, and the corresponding solubilities of the carbon in the at least one stable silicide and in the at least one second metal are sufficiently low that the carbon produced by the silicide reaction forms a graphene layer on the SiC.
Abstract:
La présente invention est relative à un procédé de préparation de couches de quartz-α épitaxiées sur substrat solide, au matériau obtenu selon ce procédé, et à ses diverses applications, notamment dans le domaine de l'électronique.
Abstract:
The current application deals with the doping and multi-chamber method and apparatus for the growth of material, directed toward Solid Phase Epitaxy (SPE) process. We will examine different variations and features of this method and process. The advantages of this method are the high throughput and the reduced operational cost of the production for semiconductor material and devices, such as III-V material (e.g. GaAs) and solar cell devices. It can be applied to many systems and devices/ material.
Abstract:
Single crystal layers of Group IV semiconductor materials, such as silicon, are grown on insulating substrates. The fabrication of this structure is achieved by forming on a single crystal substrate a layer of an insulating material (e.g. 41), such as a silicon oxide. A small via hole is produced in the insulating layer to leave a portion of the underlying substrate uncovered. A precursor material (e.g. 52, 62, 72) is deposited on the insulating layer so that it covers at least a portion of the insulating layer and also contacts the substrate at the via hole. The precursor layer is then formed into a single crystal (e.g. 74) by inducing growth on the substrate at the via hole and propagating this growth through the precursor layer.