摘要:
The purpose of the present invention is to obtain a finer texture for a silicon substrate having a textured surface and thereby obtain a thinner silicon substrate for a solar cell. The invention provides a silicon substrate that has a thickness of 50 [mu]m or less and substrate surface orientation (111), and that has a textured surface on which a texture has been formed. Such a silicon substrate is produced by a process comprising a step (A) for preparing a silicon substrate that preferably has a thickness of 50 [mu]m or less and substrate surface orientation (111), and a step (B) for texturing by blowing etching as comprising a fluorine-containing gas onto the surface of the prepared silicon substrate.
摘要:
The purpose of the present invention is to obtain a finer texture for a silicon substrate having a textured surface and thereby obtain a thinner silicon substrate for a solar cell. The invention provides a silicon substrate that has a thickness of 50 [mu]m or less and substrate surface orientation (111), and that has a textured surface on which a texture has been formed. Such a silicon substrate is produced by a process comprising a step (A) for preparing a silicon substrate that preferably has a thickness of 50 [mu]m or less and substrate surface orientation (111), and a step (B) for texturing by blowing etching as comprising a fluorine-containing gas onto the surface of the prepared silicon substrate.
摘要:
A dry etching method and apparatus are provided which are capable of performing deep etching fabrication rapidly on a substrate of an InP-based compound semiconductor. Etching gas is fed into and exhausted from a reaction chamber so that an interior of the chamber is controlled to be under a predetermined pressure. Plasma is then generated in the reaction chamber by application of at least 13.56 MHz high-frequency power to a flat spiral discharge coil or a flat antenna that is provided so as to face an InP-based compound semiconductor substrate placed on a substrate electrode in the reaction chamber, and the substrate is etched while a density of the plasma and ion energy that reaches the substrate are controlled.
摘要:
A dry etching method and apparatus are provided which are capable of performing deep etching fabrication rapidly on a substrate of an InP-based compound semiconductor. Etching gas is fed into and exhausted from a reaction chamber so that an interior of the chamber is controlled to be under a predetermined pressure. Plasma is then generated in the reaction chamber by application of at least 13.56 MHz high-frequency power to a flat spiral discharge coil or a flat antenna that is provided so as to face an InP-based compound semiconductor substrate placed on a substrate electrode in the reaction chamber, and the substrate is etched while a density of the plasma and ion energy that reaches the substrate are controlled.
摘要:
A plasma CVD system has a processing chamber having a thin film forming section, and a transfer section communicating with the thin film forming section through a connecting opening. The system includes a thin film forming device, located in the thin film forming section, for producing plasma to form a thin film on a substrate at the connecting opening, a transfer device, located in the transfer section, for bringing a substrate holding member into and out of the processing chamber, and a heat transfer plate which does not project beyond the edge of the substrate when moved into abutment against a rear face of the substrate held by the substrate holding member to move the substrate from the substrate holding member towards the thin film forming section. The heat transfer plate also conducts heat to the substrate.
摘要:
The present invention addresses the problem of providing a novel silicon substrate having a textured surface by dry-etching the surface of a silicon substrate having (111) orientation and thereby forming a texture thereon. The present invention provides a silicon substrate having (111) orientation, said silicon substrate having a textured surface that includes multiple protrusions which each comprise three slant faces and have heights of 100 to 8000 nm. This process for producing a silicon substrate includes: a step of preparing a silicon substrate having (111) orientation; and a step of blowing an etching gas onto the surface of the silicon substrate, said etching gas containing one or more gases selected from the group consisting of ClF3, XeF2, BrF3, BrF5 and NF3.
摘要:
The present invention addresses the problem of providing a novel silicon substrate having a textured surface by dry-etching the surface of a silicon substrate having (111) orientation and thereby forming a texture thereon. The present invention provides a silicon substrate having (111) orientation, said silicon substrate having a textured surface that includes multiple protrusions which each comprise three slant faces and have heights of 100 to 8000 nm. This process for producing a silicon substrate includes: a step of preparing a silicon substrate having (111) orientation; and a step of blowing an etching gas onto the surface of the silicon substrate, said etching gas containing one or more gases selected from the group consisting of ClF3, XeF2, BrF3, BrF5 and NF3.
摘要:
Provided is an organic light-emitting device having an optical output with high luminance and high color purity with extremely high efficiency. The organic light-emitting device includes an organic layer between the anode and the cathode, in which one of the anode and the cathode is a transparent electrode or a semi-transparent electrode and at least one layer of the organic layer contains at least one kind of indenopyrene compound having a specific structure.
摘要:
A power-generation plant 10 including a gas turbine 11; a fuel-gas cooler 13; and an extraction line 24 that guides the fuel gas extracted from an intermediate stage of a fuel-gas compressor 12 to the fuel-gas cooler 13; a first level detector 61 that detects whether a level of the coolant accumulated at a bottom portion of the fuel-gas cooler 13 has reached a predetermined level; and a controller that stops the gas turbine 11 on the basis of a detection signal sent from the first level detector 61 and that outputs a command signal for stopping a coolant pump 53 that supplies the coolant to the spray nozzles 44 and 45.
摘要:
An object of the present invention is to provide a method of starting and stopping a gas turbine and a start-and-stop control device, which are capable of solving a problem of a failure in normally igniting a fuel gas due to a purge gas (nitrogen gas) remaining in a fuel gas pipe and thereby igniting the fuel gas stably. For this purpose, the start-and-stop control device performs control at the time of starting the gas turbine by sequentially performing: first exhaust gas duct purge for pushing out a fuel gas remaining in an exhaust gas duct with compressed air from a compressor; fuel gas pipe purge for pushing out nitrogen gas remaining in a fuel gas pipe between a fuel gas shutoff valve and a combustor at the time of stopping the gas turbine by the fuel gas by opening a fuel gas shutoff valve; and second exhaust gas duct purge for pushing out the fuel gas remaining in the exhaust gas duct at the time of the fuel gas pipe purge by the compressed air from the compressor, and then the fuel gas is supplied to the combustor by opening the fuel gas shutoff valve again and ignited.