摘要:
A high-purity high-melting metal target or high-purity high-melting metal silicide target for LSI electrodes having an alkali metal content of not more than 100 ppb and a radioactive element content of not more than 10 ppb is provided by a wet purification process followed by a series of dry processings. Preferably the high-melting metal is molybdenum, tungsten, titanium, niobium or tantalum. More preferably, the high-melting metal is molybdenum.
摘要:
There is provided a high-purity molybdenum target or high-purity molybdenum silicide target for LSI electrodes which comprises a high-purity metallic molybdenum having an alkali metal content of not more than 100 ppb and a radioactive element content of not more than 10 ppb. Further, a process is provided for producing such target comprising a wet purification processing followed by a series of dry processings.
摘要:
Charged particles are irradiated over a thin film formed on a convex and concave surface of a substrate or over a thin film being formed on a convex and concave surface of a substrate. During the irradiation, raise in temperature of the thin film and impingement of charged particles cause the fluidization of the thin film, so that a planarized thin film is formed within a short period of time.
摘要:
A selected chemical vapor deposition method includes the steps of arranging a substrate having a silicon surface and an insulator surface in a reaction chamber, supplying a gas consisting of a silicon hydride in said reaction chamber to reduce and remove a native oxide film on said silicon surface by said gas, and supplying a source gas in said reaction chamber to selectively form a film on only said silicon surface.
摘要:
A chemical vapor deposition method is characterized in that a heating block and a surface to be deposited of a substrate are arranged to face to each other at a given distance in a closed space, a source gas is guided into the closed space and supplied between the heating block and the substrate, thereby depositing a thin film on the surface to be deposited of the substrate. A chemical vapor deposition apparatus includes a heating block arranged in a closed space, a substrate holder for holding a substrate so that a surface to be deposited of the substrate is arranged to face to the heating block at a given distance, and a device for guiding a source gas to the closed space. In this CVD apparatus, the source gas guided by the device is guided to the closed space and supplied between the heating block and the substrate, thereby depositing a thin film on the surface to be deposited of the substrate.