摘要:
Disclosed is a method of forming a thermal oxide film on a silicon single crystal wafer, which includes throwing the silicon single wafer into a heat treatment furnace; elevating temperature of the heat treatment furnace up to a temperature T1 where a thermal oxide film is formed to form a thermal oxide film having a thickness d1; subsequently lowering the temperature of the heat treatment furnace down to a temperature lower than the temperature T1; and thereafter elevating the temperature of the heat treatment furnace up to a temperature T2 higher than the temperature T1 to additionally form a thermal oxide film having a thickness d2 thicker than the thickness d1. Thus, there is provided a thermal oxide film formation method to suppress occurrence of slip dislocation and/or crack of the silicon single wafer during formation of the thermal oxide film.
摘要:
A method of forming a silicon oxide layer is described. The method first deposits a silicon-nitrogen-and-hydrogen-containing (polysilazane) film by radical-component chemical vapor deposition (CVD). The silicon-nitrogen-and-hydrogen-containing film is formed by combining a radical precursor (excited in a remote plasma) with an unexcited carbon-free silicon precursor. A capping layer is formed over the silicon-nitrogen-and-hydrogen-containing film to avoid time-evolution of underlying film properties prior to conversion into silicon oxide. The capping layer is formed by combining a radical oxygen precursor (excited in a remote plasma) with an unexcited silicon-and-carbon-containing-precursor. The films are converted to silicon oxide by exposure to oxygen-containing environments. The two films may be deposited within the same substrate processing chamber and may be deposited without breaking vacuum.
摘要:
The present invention belongs to the technical field of semiconductor materials and specifically relates to a method for cleaning & passivizing gallium arsenide (GaAs) surface autologous oxide and depositing an Al2O3 dielectric. This method includes: use a new-type of sulfur passivant to react with the autologous oxide on the GaAs surface to clean it and generate a passive sulfide film to separate the GaAs from the outside environment, thus preventing the GaAs from oxidizing again; further cleaning the residuals such as autologous oxides and sulfides on the GaAs surface through the pretreatment reaction of the reaction source trimethyl aluminum (TMA) of the Al2O3 ALD with the GaAs surface, and then deposit high-quality Al2O3 dielectric through ALD as the gate dielectric which fully separates the GaAs from the outside environment. The present invention features a simple process and good effects, and can provide preconditions for manufacturing the GaAs devices.
摘要:
A method of manufacturing a semiconductor device, the method comprising: forming an oxide film on a substrate by alternately repeating: (a) forming an element-containing layer on the substrate by supplying a source gas containing an element into a process vessel accommodating the substrate; and (b) changing the element-containing layer to an oxide layer by supplying an oxygen-containing gas and a hydrogen-containing gas into the process vessel having an inside pressure lower than atmospheric pressure, reacting the oxygen-containing gas with the hydrogen-containing gas to generate oxidizing species containing oxygen, and oxidizing the element-containing layer by the oxidizing species; wherein the hydrogen-containing gas is supplied into the process vessel together with the source gas in step (a).
摘要:
A method of forming a silicon oxide layer is described. The method first deposits a silicon-nitrogen-and-hydrogen containing (polysilazane) film by radical-component chemical vapor deposition (CVD). The silicon-nitrogen-and-hydrogen containing film is formed by combining a radical precursor (excited in a remote plasma) with m unexcited carbon-free silicon precursor. A capping layer is formed over the silicon-nitrogen-and-hydrogen-containing film to avoid time-evolution of underlying film properties prior to conversion into silicon oxide. The capping layer is formed by combining a radical oxygen precursor (excited in a remote plasma) with an unexcited silicon-and-carbon-containing-precursor. The films are converted to silicon oxide by exposure to oxygen-containing environments. The two films may be deposited within the same substrate processing chamber and may be deposited without breaking vacuum.
摘要:
In one embodiment, an aqueous dispersion liquid contains at least one particles selected from tungsten oxide particles and tungsten oxide composite particles. A mean primary particle diameter (D50) of the particles is in the range of 1 nm to 400 nm. In the aqueous dispersion liquid, concentration of the particles is in the range of 0.1 mass % to 40 mass %, and pH is in the range of 1.5 to 6.5. The aqueous dispersion liquid excels in dispersibility of particles and capable of maintaining good liquidity for a long period.
摘要:
Some embodiments include dielectric structures. The structures include first and second portions that are directly against one another. The first portion may contain a homogeneous mixture of a first phase and a second phase. The first phase may have a dielectric constant of greater than or equal to 25, and the second phase may have a dielectric constant of less than or equal to 20. The second portion may be entirely a single composition having a dielectric constant of greater than or equal to 25. Some embodiments include electrical components, such as capacitors and transistors, containing dielectric structures of the type described above. Some embodiments include methods of forming dielectric structures, and some embodiments include methods of forming electrical components.
摘要:
This disclosure relates to compositions that include (a) at least one substituted or unsubstituted cyclic alkene, and (b) an antioxidant composition including at least one compound of Formula (I): R1 through R4 in Formula (I) are described in the specification.
摘要:
Aspects of the disclosure pertain to methods of depositing dielectric layers on patterned substrates. In embodiments, dielectric layers are deposited by flowing BIS(DIETHYLAMINO)SILANE (BDEAS), ozone and molecular oxygen into a processing chamber such that a relatively uniform dielectric growth rate is achieved across the patterned substrate surface. The deposition of dielectric layers grown according to embodiments may have a reduced dependence on pattern density while still being suitable for non-sacrificial applications.
摘要:
A control unit heats a reaction pipe to a load temperature by controlling a temperature-raising heater 16, and then makes semiconductor wafers received in the reaction pipe. Next, the control unit heats the reaction pipe in which the semiconductor wafers are received to a film formation temperature by controlling the temperature-raising heater, and then forms thin films on the semiconductor wafers by supplying a film forming gas into the reaction pipe from a process gas introducing pipe. Also, the control unit sets the load temperature to a temperature higher than the film formation temperature.