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:
A silicon based film is provided which comprises a crystal phase formed on a substrate with a surface shape represented by a function f, wherein the silicon-based film is formed on a substrate with a surface shape having a standard deviation of an inclination arctan (df/dx) from 15° to 55° within the range of a sampling length dx from 20 nm to 100 nm. Raman scattering strength resulting from an amorphous component in the silicon-based film is not more than a Raman scattering strength resulting from a crystalline component. A difference between a spacing in a direction parallel to a principal surface of the substrate and a spacing of a single crystal silicon is within the range of 0.2% to 1.0% with regard to the spacing of the single crystal silicon.
摘要:
A silicon-based film of excellent photoelectric characteristics can be obtained by introducing a source gas containing silicon halide and hydrogen into the interior of a vacuum vessel, at least a part of the interior being covered with a silicon-containing solid, generating plasma in the space of the interior of the vacuum vessel, and forming a silicon-based film on a substrate provided in the interior of the vacuum vessel.
摘要:
A film, typically a silicon-based film, is formed on a substrate by means of a plasma CVD process using a high frequency wave in a condition where a resistance element made of a different material than that of the substrate is provided on the electric path between the substrate and the earth. The resultant film shows a high quality and an improved adhesion strength while it can be formed at a practically high rate.
摘要:
A photovoltaic element having a stacked structure comprising a first semiconductor layer containing no crystalline phase, a second semiconductor layer containing approximately spherical microcrystalline phases, and a third semiconductor layer containing pillar microcrystalline phases which are stacked in this order, wherein said spherical microcrystalline phases of said second semiconductor layer on the side of said third semiconductor layer have an average size which is greater than that of said spherical microcrystalline phases of said second semiconductor layer on the side of said first semiconductor layer.
摘要:
A film, typically a silicon-based film, is formed on a substrate by means of a plasma CVD process using a high frequency wave in a condition where a resistance element made of a different material than that of the substrate is provided on the electric path between the substrate and the earth. The resultant film shows a high quality and an improved adhesion strength while it can be formed at a practically high rate.
摘要:
There is provided an apparatus for forming a plurality of silicon-based thin films on a substrate using a plurality of deposited film forming vessels that can form silicon-based thin films of higher quality and excellent uniformity by applying a high frequency power of a first frequency selected from the range between 30 MHz and 500 MHz to a power-applying electrode in a deposited film forming vessel wherein the distance between the power-supplying electrode and the substrate is 10 mm±5 mm, and by supplying a high frequency power of a second frequency selected from the range between 10 MHz and 30 MHz to a power-supplying electrode in a deposited film forming vessel wherein the distance between the power-supplying electrode and the substrate is 20 mm±5 mm.
摘要:
An object of the present invention is to provide a photovoltaic device and a method of producing the photovoltaic device which can prevent recombination of photo-excited carriers and which permits increases in the open circuit voltage and the carrier range. The photovoltaic device of the present invention has a laminate structure composed of at least a p-type layer of a silicon non-single crystal semiconductor, a photoactive layer having a plurality of i-type layers, and an n-type layer. The photoactive layer has a laminate structure composed of a first i-type layer deposited on the side of the n-type layer by a microwave plasma CVD process, and a second i-type layer deposited on the side of said the p-type layer by an RF plasma CVD process. The first i-type layer deposited by the microwave plasma CVD process contains at least silicon and carbon atoms, and has a minimum band gap between the center thereof and the p-type layer, and the second i-type layer deposited by the RF plasma CVD process contains at least silicon atoms and has a thickness of 30 nm or less.
摘要:
In a high frequency plasma CVD using a source gas comprising a silicon halide and hydrogen, the value of Q defined by Q=Po×PR/S/d is controlled so as to be 50 or more, wherein Po (W) is a supplied power, S (cm2) is the area of a high frequency introducing electrode, d (cm) is a distance between the high frequency introducing electrode and a substrate, and PR (mTorr) is a pressure. Thereby, a method of forming a silicon thin film, a silicon thin film and a photovoltaic element excellent in photoelectric characteristics are provided which attain a film forming rate of an industrially practical level.
摘要翻译:在使用包含硅卤化物和氢的源气体的高频等离子体CVD中,由Q = PoxPR / S / d定义的Q值为50以上,其中Po(W)为供电电力, S(cm 2)是高频引入电极的面积,d(cm)是高频引入电极和衬底之间的距离,PR(mTorr)是压力。 因此,提供了一种形成硅薄膜,硅薄膜和光电特性优异的光电元件的方法,其获得了工业实用水平的成膜速率。
摘要:
A plasma CVD method adapted to a roll-to-roll process or the like wherein the change rate of the temperature of the substrate before and after an i-type semiconductor layer is deposited is made rapid so as to prevent diffusion of impurities occurring due to annealing, by constituting the apparatus structure in such a manner that the deposited film is formed on an elongated substrate by the plasma CVD method while heating the elongated substrate moving in an i-layer forming discharge chamber at a rate of 4.degree. C./second or higher immediately in front of an inlet to the discharge chamber and cooling the same at a rate of 4.degree. C./second or higher immediately at the outlet of the discharge chamber so that a stacked-layer type photovoltaic device having a large area and free from scattering of the characteristics is continuously formed without deterioration of the characteristics occurring due to dopant diffusion.