Samsung Electronics Co., Ltd.

Young-Cheon Kim

In-Sun Park

Hyeon-Deok Lee

Ju-Cheol Shin

Hyun-young Kim

Rak-Hwan Kim

Won-sang Song

Kyung-Bum Koo

Chul Whang-Bo

A semiconductor memory device and a method of manufacturing the semiconductor memory device, in which a bit line can have a low resistance without an increase in the thickness of the bit line. In the semiconductor memory device, an insulating layer having a contact hole that exposes a conductive region is formed on a semiconductor substrate having the conductive region. A barrier metal layer is formed along the surface of the insulating layer and the surface of the contact hole. A grain control layer is formed between the barrier metal layer and the tungsten layer. A tungsten layer is formed on the grain control layer. A grain size of the tungsten layer is increased by the grain control layer.

Semiconductor memory device having low-resistance tungsten line and method of manufacturing the semiconductor memory device

A method for preventing void formation in a polycide structure includes sequentially depositing a gate oxide film, a polysilicon film doped with impurities, a seed film having a sufficient amount of silicon for reacting with an overlaying tungsten layer, a tungsten silicide precursor layer; and an etch mask made of an insulating material on a semiconductor substrate; performing a patterned etching using the etch mask; and heat-treating the resulting structure in an oxygen atmosphere at an elevated temperature and pressure to form a polycide structure wherein void formation is prevented. Since the seed film has a sufficient amount of amorphous silicon for reacting to the tungsten, migration of silicon atoms to the interfacial surface between the polysilicon film and the tungsten silicide precursor layer is prevented, thereby preventing the formation of voids in the polysilicon film.

Method for forming a polycide structure in a semiconductor device

A chemical vapor deposition (CVD) method for depositing a suicide and a CVD system for performing the same are disclosed. A silicide is deposited on a substrate. Residual gases remaining from the depositing step are purged out by flowing air including H O (g), to substantially remove fumes caused by the residual gases. In the purge step, the cycle purge is carried out at the conditions similar to the flow of atmosphere, to substantially remove the fumes.

Chemical vapor deposition method for depositing silicide and apparatus for performing the same

A method of manufacturing a metal pattern of a semiconductor device. A Ti layer and a metal layer are successively formed on a semiconductor substrate or on an insulating layer. Then, a wiring pattern including a Ti layer pattern and a metal layer pattern is formed by patterning said Ti layer and the metal layer. Heat treating is employed under an atmosphere of a compound including nitrogen in order to react an exposed portion of the Ti layer pattern to form TiN as a main product, thereby increasing the stability and adhesiveness of the metal layer for subsequent processes.

Growing community of inventors

Gyeonggi-do, South Korea

Young-Cheon Kim