摘要:
A plurality of antenna elements, each of which has first and second linear conductors whose first ends are electrically interconnected are formed. The antenna elements are arranged in plane in such a way that the first and second linear conductors are alternated and separated from one another at regular intervals, thereby forming one or more array antennas which are disposed in a chamber. The second ends of the first linear conductors are connected to a high-frequency power supply, and the second ends of the second linear conductors are connected to ground. A plurality of substrates are parallel placed on both sides of the array antennas at distances approximate to the distances between the linear conductors. A film is formed by introducing an ingredient gas into the chamber.
摘要:
An apparatus for forming thin films forms a plurality of thin films in a single chamber by sequential formation of at least a first and a second thin film on a substrate by an antenna type plasma CVD method. This apparatus is provided with a residual material removal apparatus, which removes from the chamber residual materials resulting from the step for forming the first film and which affect the properties of the second film. A method and an apparatus for forming films and a solar cell removes residual material (including material gas) resulting in the step for forming the first film which have an effect on the properties of the second film. Since a plurality of films are deposited inside a single chamber, it is unnecessary to provide a plurality of chambers, thus enabling the apparatus and solar cell to be more compact and of reduced cost.
摘要:
A plurality of antenna elements, each of which has first and second linear conductors whose first ends are electrically interconnected are formed. The antenna elements are arranged in plane in such a way that the first and second linear conductors are alternated and separated from one another at regular intervals, thereby forming one or more array antennas which are disposed in a chamber. The second ends of the first linear conductors are connected to a high-frequency power supply, and the second ends of the second linear conductors are connected to ground. A plurality of substrates are parallel placed on both sides of the array antennas at distances approximate to the distances between the linear conductors. A film is formed by introducing an ingredient gas into the chamber.
摘要:
The object of this invention is to realize the new configuration of antenna and the electric power feeding method which substantially suppress the generation of standing wave and consequently to provide a discharge apparatus to generate plasma having an excellent uniformity, a plasma processing method for large-area substrate, and a solar cell manufactured with a high productivity. The present invention is composed of a plurality of U-shaped antenna elements having a power feeding end and a grounded end which are arranged to form an array antenna in such a way that the grounded end and the power feeding end are alternately placed in parallel at regular intervals on a plane, wherein the alternating current electric powers with the same excitation frequency are simultaneously fed to the power feeding ends with the phase shift of 180 degrees between adjacent power feeding ends, the excitation frequency of the alternating current power is 10 MHz-2 GHz, and the length of the conductor is set so that the measured ratio of reflected wave to incident wave is 0.1 or less at the power feeding end. It is also possible to determine the length La of straight conductor to hold the inequality: 0.5(1/α)
摘要:
A plasma processing apparatus is of an internal electrode type, and an inductive coupling type electrode arranged facing a substrate has a shape formed by bending back a conductor at its central portion. A high frequency power is supplied to an end of the electrode so that a standing wave of half wavelength are produced at straight portions formed by bending back the electrode to make an antinode there and thus a plasma discharge is generated around the electrode. The controlled standing waves with its antinodes positively generated at the straight portions of the electrode are effectively used.
摘要:
A plasma CVD apparatus includes a an electrode array in a reaction chamber, the electrode array including a plurality of inductively coupled electrodes, each electrode being folded back at the center so that each electrode is substantially U-shaped with two parallel straight portions, the electrodes are arranged such that all of the parallel straight portions are arranged parallel to each other in a common plane, each of the electrodes having at least a portion with a diameter of 10 mm or less, and a phase controlled power supply for feeding high frequency power to the feeding portions so as to establish a standing wave of a half wavelength or natural number multiple of a half wavelength between a feeding portion and a folded back portion and between a grounded portion and the folded back portion, and is controlled to have a phase difference between adjacent two feeding portions.
摘要:
In a thin-film deposition method, a substrate is placed in a heat chamber having a pressure equal to or higher than an atmospheric pressure, and the substrate is heated in the heat chamber by supplying gas having a temperature higher than a room temperature by forced convection. The heated substrate is transferred from the heat chamber into a deposition chamber which is a vacuum chamber connected to the heat chamber directly or indirectly with a valve interposed therebetween. Then, a thin-film deposition is carried out on the substrate in the deposition chamber at a deposition temperature higher than the room temperature.
摘要:
Object of this invention is to provide a plasma CVD method capable of forming a microcrystalline silicon film at low hydrogen gas flow rate, thereby providing a low-cost microcrystalline silicon solar cell.In the plasma CVD method forming the microcrystalline silicon film, plural antennas are arranged to form an antenna array structure in a vacuum chamber. One end of each antenna is connected to a high frequency power source and anther end is grounded. Substrates are placed facing the antenna arrays, and the substrate temperature is kept between 150 and 250° C. Plasma is generated by introducing gas mixture of hydrogen and silane to the chamber, and by introducing high frequency power to the antennas. When hydrogen/silane gas flow ratio is controlled in the range from 1 to 10, microcrystalline silicon films are formed on the substrates with the ratio Ic/Ia between 2 and 6, whereas Ic and Ia are the Raman scattering intensity at around 520 cm−1 and at around 480 cm−1, related to crystalline silicon and amorphous silicon, respectively
摘要:
A plasma CVD method uses an electrode array in a reaction chamber, the electrode array including a plurality of inductively coupled electrodes, each electrode being folded back at the center so that each electrode is substantially U-shaped with two parallel straight portions, the electrodes are arranged such that all of the parallel straight portions are arranged parallel to each other in a common plane, each of the electrodes having at least a portion with a diameter of 10 mm or less, and a phase controlled power supply for feeding high frequency power to the feeding portions so as to establish a standing wave of a half wavelength or natural number multiple of a half wavelength between a feeding portion and a folded back portion and between a grounded portion and the folded back portion, and is controlled to have a phase difference between adjacent two feeding portions.
摘要:
A base film for a dicing sheet is provided which can suppress dicing debris from generating during the dicing of a cut object without imparting physical energy, such as electron beam or γ ray. The base film for a dicing sheet comprises a resin layer. The resin layer comprises: a norbornene-based resin that is a thermoplastic resin having a norbornene-based compound as at least one type of monomer; and an olefin-based thermoplastic resin other than the norbornene-based resin. The norbornene-based resin in the resin layer has a content of more than 3.0 mass %. A dicing sheet is also provided which comprises: the base film for a dicing sheet; and a pressure-sensitive adhesive layer placed on a surface of the film at the resin layer side.