摘要:
A method for handling polysilazane or a polysilazane solution includes synthesizing polysilazane and preparing the polysilazane solution in a first space isolated from outside air. The first space is mainly supplied with air from which amine, basic substance, volatile organic compound and acidic substance are eliminated.
摘要:
A method of manufacturing a semiconductor device, has applying perhydro polysilazane to a substrate; and immersing at least the surface of said substrate to which perhydro polysilazane is applied in a mixture containing water heated to 120 degrees C. or higher to which ultrasound is applied, thereby modifying the perhydro polysilazane into silicon oxide.
摘要:
A method of manufacturing a semiconductor device includes forming a trench for isolation on a surface of a substrate including a semiconductor substrate, filling the trench with a solution containing a perhydrosilazane polymer by applying the solution on the substrate, converting the solution into a film containing the perhydrosilazane polymer by heating the solution, and converting the film into a silicon dioxide film including heating the film at a first temperature in an atmosphere containing vapor, and heating the film heated at the first temperature at a second temperature lower than the first temperature in an atmosphere containing vapor or in pure water.
摘要:
A method for manufacturing a semiconductor device includes coating a solution containing a perhydrosilazane polymer on a substrate, heating the solution to form a film containing the perhydrosilazane polymer, and oxidizing the film in a water vapor atmosphere at a reduced pressure to convert the film into an insulating film containing silicon and oxygen.
摘要:
In a method of manufacturing a semiconductor device having a nonvolatile semiconductor memory element with a two-layered gate structure in which a floating gate and control gate are stacked, a polysilicon layer serving as the floating gate is stacked on a silicon substrate via a tunnel insulating film. Then, the silicon layer, tunnel insulating film, and substrate are selectively etched to form an element isolation trench. A nitride film is formed on the sidewall surface of the silicon layer exposed into the element isolation trench. An oxide film is buried in the element isolation trench. A conductive film serving as the control gate is stacked on the oxide film and silicon layer via an electrode insulating film. The conductive film, electrode insulating film, and silicon layer are selectively etched to form the control gate and floating gate.
摘要:
The invention presents a compressive hemostatic belt which is easy to handle and is disposable. A balloon 5 inflatable by filling with fluid is mounted on a specific position of a strip 1 made of non-elastic or low-elastic fiber cloth or the like through mounting means, and a pump 8 and a pressure gauge 9 are connected to the balloon 5 through a check valve 6. The balloon 5 is filled with a fluid by manipulating the pump 8 while observing the pressure gauge 9 to inflate the balloon 5, so that only the area where bleeding is to be stopped is put under pressure. Since the balloon 5 is inflated only on the specified area, a piece of hard material 4 may be placed between the balloon 5 and the strip 1. A non-elastic reinforcing member 11 inserted on the opposite side of the balloon 5 can be varied, or the confronting portion of the strip 1 against the balloon 5 can be formed of a non-elastic reinforcing member stronger than the materials of other portions of the strip.