摘要:
A method of forming a semiconductor device includes preparing a substrate having a recessed area. A silicon oxide layer is formed at the recessed area. A catalytic nitridation treatment is performed for an upper portion of the silicon oxide layer to form a nitridation reactant on the upper portion of the silicon oxide layer. A dielectric layer is formed on the silicon oxide layer where the nitridation reactant is formed. The dielectric layer is annealed. According to the foregoing method, recession of the dielectric layer is prevented to fabricate a high-quality semiconductor device.
摘要:
In a method of forming an isolation layer, a plurality of trenches is formed on a substrate. A liner is formed on inner walls of the trenches. The liner is thermally oxidized to fill up some of the trenches. The other trenches are filled up with an insulation material. As a result, the isolation layer is free of voids.
摘要:
Methods of manufacturing silicon oxide layers for semiconductor devices are provided in which a substrate having a recess is coated with a spin-on-glass film so that the recess is filled with the spin-on-glass film. A main thermal treatment is performed on the spin-on-glass film at about 600 to about 1,000° C. at about 1 ATM to about 50 ATM so that the spin-on-glass film is converted into a relatively dense silicon oxide layer.
摘要:
A film is formed on a substrate including conductive patterns or trenches using a composition that included a solvent and perhydro-polysilazane having a weight average molecular weight of about 1,800 to 3,000 and a molecular weight distribution of more than about 2.2 to about 3.0. The film is changed into a silicon oxide film, and then an opening is formed through the silicon oxide film. A contact is formed in the opening by filling the opening with conductive material. The silicon oxide film of perhydro-polysilazane having low molecular weight becomes dense and uniform.
摘要:
A method of forming a trench isolation layer can include forming an isolation layer in a trench using High Density Plasma Chemical Vapor Deposition (HDPCVD) with a carrier gas comprising hydrogen. Other methods are disclosed.
摘要:
A method of fabricating a semiconductor device, the method including sequentially forming a pad oxide layer and a nitride layer on a substrate; etching the nitride layer, the pad oxide layer, and the substrate to form a trench; forming a sidewall oxide layer on a sidewall and a bottom of the trench; forming a oxide layer liner including nitrogen on the sidewall oxide layer; and forming a gap fill layer on the oxide layer liner
摘要:
A method of forming a trench isolation layer can include forming an isolation layer in a trench using High Density Plasma Chemical Vapor Deposition (HDPCVD) with a carrier gas comprising hydrogen. Other methods are disclosed.
摘要:
Methods of forming material in a gap in a substrate include forming a pattern to define a gap on a substrate. A bottom oxide layer is formed on a surface of the substrate and substantially filling the gap. The bottom oxide layer is etched back inside an opening in the gap to expose side walls of the gap so that a residual bottom oxide layer remains at a bottom of the gap. A top oxide layer is selectively deposited on the residual bottom oxide layer, wherein the top oxide layer is deposited in a first direction toward the opening at a faster rate than in a second direction away from the side walls.
摘要:
A method of forming a SOG insulation layer of a semiconductor device comprises the steps of forming the SOG insulation layer on a substrate having a stepped pattern using a solution containing a polysilazane in an amount of less than 20% by weight in terms concentration of solid content, performing a pre-bake process for removing solvent ingredients in the insulation layer at a temperature of 50 to 350° C., and annealing at a temperature of 600 to 1200° C. The method of the invention further includes performing a hard bake process at a temperature of about 400° C. between the pre-bake process and the annealing step. Also, the polysilazane is desirably contained in an amount of 10 to 15% by weight.
摘要:
One embodiment of a method of fabricating a flash memory device includes forming a trench mask pattern, which includes a gate insulation pattern and a charge storage pattern stacked in sequence, on a semiconductor substrate; etching the semiconductor substrate using the trench mask pattern as an etch mask to form trenches defining active regions; and sequentially forming lower and upper device isolation patterns in the trench. After sequentially forming an intergate insulation film and a control gate film on the upper device isolation pattern, the control gate film, the intergate insulation pattern and the gloating gate pattern are formed, thereby providing gate lines crossing over the active regions.