摘要:
For efficiently forming a semiconductor element with excellent adhesion and environment resistance, a semiconductor element forming method is configured to have a step of forming a plurality of pin junctions of a silicon-based material on a substrate by a high-frequency plasma CVD process under a pressure of not more than atmospheric pressure, and the method further has a step of forming a p-layer, an i-layer, and a portion of an n-layer of a first pin junction of the pin junctions or forming an n-layer, an i-layer, and a portion of a p-layer of a first pin junction of the pin junctions, and thereafter exposing the p-layer or the n-layer exposed in the surface, to an oxygen-containing atmosphere; a step of forming on the p-layer or the n-layer as exposed to the oxygen-containing atmosphere a layer of the same conductivity type as that of the p-layer or the n-layer; and a step of forming an n-layer or a p-layer of a second pin junction adjacent to the first pin junction to form a pn interface.
摘要:
Provided are a photovoltaic element suitable for practical use, low in cost, high in reliability, and high in photoelectric conversion efficiency, and a fabrication process thereof. In the photovoltaic element having stacked layers of non-single-crystal semiconductors, at least an i-type semiconductor layer and a second conductivity type semiconductor layer are stacked on a first conductivity type semiconductor layer, and the second conduction type semiconductor layer has a layer A formed by exposing the surface of the i-type semiconductor layer to a plasma containing a valence electron controlling agent and a layer B deposited on the layer A by a CVD process using at least the valence electron controlling agent and the main constituent elements of the i-type semiconductor layer.
摘要:
A photovoltaic device comprises a semiconductor region having at least one set of semiconductor layers comprised of a first semiconductor layer having a first conductivity type, an intrinsic or substantially intrinsic second semiconductor layer, and a third semiconductor layer having a conductivity type opposite to that of the first conductivity type, the layers being formed in this order, and first and second electrodes provided such that the electrodes interpose the semiconductor region; wherein the density of a dopant impurity determining the conductivity type of the first semiconductor layer in a set of semiconductor layers which is in contact with the first electrode is varied so as to be lower on the side of the first electrode, or the grain size of crystals in the first semiconductor layer is varied so as to be smaller on the side of the first electrode. This provides a photovoltaic device that does not exhibit great lowering of characteristics even when short circuits locally occur in the semiconductor layers during long-term service.
摘要:
A chemical-reaction inducing means is provided in an exhaust line connecting a processing space for subjecting a substrate or a film to plasma processing to an exhaust means, and at least either an unreacted gas or byproduct exhausted from the processing space are caused to chemically react without allowing plasma in the processing space to reach the chemical-reaction inducing means, thereby improving the processing ability of the chemical-reaction inducing means to process the unreacted gas or byproduct.
摘要:
To provide an apparatus for forming a deposited film, which is a parallel plate electrode type CVD apparatus, with a discharge vessel receiving a material gas flowing therein and discharging air therefrom, decomposing the material gas by the aid of a plasma generated therein, and depositing the film on the substrate, in which the exhaust port of the material gas exhaust means has an opening wider in the lateral direction than the parallel plate electrode. This structure diminishes the stagnant region of the material gas during the deposited film forming process and controls formation of by-products, to deposit the film uniform in quality and thickness.
摘要:
A film-forming apparatus which has at least a vacuum vessel whose inside is capable of being vacuumed and a film-forming chamber having a discharge region provided in said vacuum vessel and in which a substrate web having a desired width and a desired length is arranged so as to constitute a part of said film-forming chamber, wherein said substrate web is continuously moved to pass through said discharge region of said film-forming chamber to continuously form a deposited film on said substrate web, characterized in that said film-forming chamber is provided with an opening-adjusting member such that said opening-adjusting member constitutes an entrance or/and an exit of said film-forming chamber, and a face of said opening-adjusting member which is opposed to said substrate web has one or more grooves formed substantially in parallel to a direction for said substrate web to be transported.
摘要:
A chemical-reaction inducing means is provided in an exhaust line connecting a processing space for subjecting a substrate or a film to plasma processing to an exhaust means, and at least either an unreacted gas or byproduct exhausted from the processing space are caused to chemically react without allowing plasma in the processing space to reach the chemical-reaction inducing means, thereby improving the processing ability of the chemical-reaction inducing means to process the unreacted gas or byproduct.
摘要:
There is provided a method of forming a photovoltaic element, in which a p-type semiconductor layer is formed in a device for forming a semiconductor thin film having a cathod electrode structure, in which in a plasma discharge space, the surface area of a cathod electrode in a plasma discharge space is larger than the sum of surface areas of a belt-like member and an anode electrode, a potential of said cathod electrode at the time of excitation of glow discharge is positive relative to the belt-like member and the anode electrode, and a separator electrode partially constituting the cathod electrode is configured to have a form of a fin or a block, and an n-type semiconductor layer is formed in a device for forming a semiconductor thin film having a cathod electrode structure of a capacitive-coupling, parallel-plate type. Thereby, a photovoltaic element having a high quality and superior uniformity over a large area, less defects, superior photo deterioration property and improved series resistance can be manufactured providing a high throughput in large quantities with good reproducibility.
摘要:
A method of manufacturing thin films by plasma CVD is described. This method comprises supplying power to a power electrode in a way such that a self-bias upon plasma discharge of the power applying electrode, which is situated in a plasma discharge space, is a positive potential relative to a ground electrode.
摘要:
A continuous film-forming apparatus includes a plurality of reaction chambers each capable of forming a semiconductor film with a different chemical composition. The reaction chambers are arranged such that a substrate web on which a film is to be formed can be hermetically moved through each of the reaction chambers under a vacuum condition. A gas gate is disposed at a central position between each pair of adjacent reaction chambers, with each gas gate provided with a slit for communication between the adjacent reaction chambers. The slit is provided with a clearance which allows the substrate web to move therethrough, is structured such that gate gas can be introduced therein from above and beneath the substrate which is moved through the clearance, and is dimensioned such that opposite sides proximate to the position where the gate gas is introduced have different heights in accordance with the inner pressure upon film formation of each of the adjacent reaction chambers in communication with each other by the slit.