Samsung Electronics Co., Ltd.

Skhynix Inc.

Dong-Chul Yoo

Ki-Hyun Hwang

Han-Mei Choi

Jae-young Ahn

Phil-Ouk Nam

Byong-Ju Kim

Eun-ha Lee

Sung Heo

Jun-Kyu Yang

Hun-hyeong Lim

Jeon-Il Lee

Chan-Jin Park

Young-jin Noh

Byong-Hyun Jang

Guk-Hyon Yon

Kwang-Min Park

Hyung-Ik Lee

Ju-Mi Yun

Joong-Yun Ra

Young-Seon Son

Kyung-Hyun Kim

Jin-Gyun Kim

Young-Geun Park

Byoung-Moon Yoon

Hyo-Jung Kim

Joon-Suk Lee

Jong-Heun Lim

Chang-Sup Mun

Jin-Ho Bin

Il-Young Kwon

Hye-Hyeon Byeon

Bi-O Kim

Yong-Koo Kyoung

Soo-Doo Chae

Myung-Jung Pyo

Ju-Yul Lee

Han-mei Choi

Young-Jong Je

Chan-Hee Park

Disclosed is a semiconductor device with improved electrical characteristics and a method for fabricating the same, and the method may include forming an alternating stack in which dielectric layers and sacrificial layers are alternately stacked on a substrate, forming a first through portion in the alternating stack, etching first portions of the sacrificial layers through the first through portion, to form lateral recesses between the dielectric layers, forming charge trapping layers isolated in the lateral recesses, forming a second through portion by etching the alternating stack in which second portions of the sacrificial layers remain, removing the second portions of the sacrificial layers through the second through portion, to form gate recesses that expose non-flat surfaces of the charge trapping layers, flattening the non-flat surfaces of the charge trapping layers, and forming a gate electrode that fills the gate recesses.

Semiconductor device and method for fabricating the semiconductor device

A semiconductor device is provided as follows. A tunnel insulation layer is disposed on a substrate. The tunnel insulation layer includes a first silicon oxide layer, a second silicon oxide layer, and a silicon layer interposed between the first silicon oxide layer and the second silicon oxide layer. The silicon layer has a thickness smaller than a thickness of each of the first silicon oxide layer and the second silicon oxide layer. A gate pattern is disposed on the tunnel insulation layer.

Semiconductor devices and methods of manufacturing the same

Non-volatile semiconductor devices

Nonvolatile memory devices include at least four cylindrical-shaped channel regions, which extend vertically from portions of a substrate located at respective vertices of at least one rhomboid when viewed in a vertical direction relative to a surface of the substrate. A charge storage layer (e.g., ONO layer) is provided on an outer sidewall of each of the cylindrical-shaped channel regions. In addition, to achieve a high degree of integration, a plurality of vertically-stacked gate electrodes are provided, which extend adjacent each of the cylindrical-shaped channel regions.

Vertical memory devices and methods of manufacturing the same

A vertical memory device including a substrate including first regions and a second region; a plurality of channels in the first regions, the plurality of channels extending in a first direction substantially perpendicular to a top surface of the substrate; a charge storage structure on a sidewall of each channel in a second direction substantially parallel to the top surface of the substrate; a plurality of gate electrodes in the first regions, the plurality of gate electrodes arranged on a sidewall of the charge storage structure and spaced apart from each other in the first direction; and a plurality of supporters in the second region, the plurality of supporters spaced apart from each other in a third direction substantially perpendicular to the first direction and the second direction, the plurality of supporters contacting a sidewall of at least one gate electrode.

A vertical memory device includes a channel, a ground selection line (GSL), word lines, a string selection line (SSL), and a contact. The channel includes a vertical portion and a horizontal portion. The vertical portion extends in a first direction substantially perpendicular to a top surface of a substrate, and the horizontal portion is connected to the vertical portion and parallel to the top surface of the substrate. The GSL, the word lines and the SSL are formed on a sidewall of the vertical portion of the channel sequentially in the first direction, and are spaced apart from each other. The contact is on the substrate and electrically connected to the horizontal portion of the channel.

Methods of manufacturing semiconductor devices include forming an integrated structure and a first stopping layer pattern in a first region. A first insulating interlayer and a second stopping layer are formed. A second preliminary insulating interlayer is formed by partially etching the second stopping layer and the first insulating interlayer in the first region. A first polishing is performed to remove a protruding portion. A second polishing is performed to expose the first and second stopping layer patterns.

Methods of manufacturing semiconductor devices

A vertical structure non-volatile memory device in which a gate dielectric layer is prevented from protruding toward a substrate; a resistance of a ground selection line (GSL) electrode is reduced so that the non-volatile memory device is highly integrated and has improved reliability, and a method of manufacturing the same are provided. The method includes: sequentially forming a polysilicon layer and an insulating layer on a silicon substrate; forming a gate dielectric layer and a channel layer through the polysilicon layer and the insulating layer, the gate dielectric layer and the channel layer extending in a direction perpendicular to the silicon substrate; forming an opening for exposing the silicon substrate, through the insulating layer and the polysilicon layer; removing the polysilicon layer exposed through the opening, by using a halogen-containing reaction gas at a predetermined temperature; and filling a metallic layer in the space formed by removing the polysilicon layer.

Vertical structure non-volatile memory device and method of manufacturing the same

A method for fabricating a nonvolatile memory device is disclosed. The method includes forming a first structure for a common source line on a semiconductor substrate, the first structure extending along a first direction, forming a mold structure by alternately stacking a plurality of sacrificial layers and a plurality of insulating layers on the semiconductor substrate, forming a plurality of openings in the mold structure exposing a portion of the first structure, and forming a first memory cell string at a first side of the first structure and a second memory cell string at a second, opposite side of the first structure. The plurality of openings include a first through-hole and a second through-hole, each through-hole passing through the plurality of sacrificial layers and plurality of insulating layers, and the first through-hole and the second through-hole overlap each other in the first direction.

Method for fabricating nonvolatile memory device

An insulating pattern is disposed on a surface of a semiconductor substrate and includes a silicon oxynitride film. A conductive pattern is disposed on the insulating pattern. A data storage pattern and a vertical channel pattern are disposed within a channel hole formed to vertically penetrate the insulating pattern and the conductive pattern. The data storage pattern and the vertical channel pattern are conformally stacked along sidewalls of the insulating pattern and the conductive pattern. A concave portion is formed in the semiconductor substrate adjacent to the insulating pattern. The concave portion is recessed relative to a bottom surface of the insulating pattern.

Semiconductor devices including vertical channel pattern

Methods of forming conductive patterns include forming a conductive layer including a metal element on a substrate. The conductive layer is partially etched to generate a residue including an oxide of the metal element and to form a plurality of separately formed conductive layer patterns. A cleaning gas is inflowed onto the substrate including the conductive layer pattern. The metal compound is evaporated to remove the metal element contained in the residue and to form an insulating interface layer on the conductive layer pattern and a surface portion of the substrate through a reaction of a portion of the cleaning gas and oxygen. The residue may be removed from the conductive layer pattern to suppress generation of a leakage current.

Methods of forming conductive layer patterns using gas phase cleaning process and methods of manufacturing semiconductor devices

A memory device and a method of fabricating the same are provided. The memory device includes a tunneling dielectric layer on a substrate, a charge storage layer on the tunneling dielectric layer, a blocking dielectric layer on the charge storage layer, the blocking dielectric layer including a first dielectric layer having silicon oxide, a second dielectric layer on the first dielectric layer and having aluminum silicate, and a third dielectric layer formed on the second dielectric layer and having aluminum oxide, and an upper electrode on the blocking dielectric layer.

Memory device and method of fabricating the same

Methods of manufacturing a semiconductor device include forming a stopping layer pattern in a first region of a substrate. A first mold structure is formed in a second region of the substrate that is adjacent the first region. The first mold structure includes first sacrificial patterns and first interlayer patterns stacked alternately. A second mold structure is formed on the first mold structure and the stopping layer pattern. The second mold structure includes second sacrificial patterns and second interlayer patterns stacked alternately. The second mold structure partially covers the stopping layer pattern. A channel pattern is formed and passes through the first mold structure and the second mold structure.

Methods of manufacturing a vertical type semiconductor device

Nonvolatile memory devices include a tunnel insulating layer on a substrate and a charge storing layer on the tunnel insulating layer. A charge transfer blocking layer is provided on the charge storing layer. The charge transfer blocking layer is formed as a composite of multiple layers, which include a first oxide layer having a thickness of about 1 &#x212b; to about 10 &#x212b;. This first oxide layer is formed directly on the charge storing layer. The charge transfer blocking layer includes a first dielectric layer on the first oxide layer. The charge transfer blocking layer also includes a second oxide layer on the first dielectric layer and a second dielectric layer on the second oxide layer. The first and second dielectric layers have a higher dielectric constant relative to the first and second oxide layers, respectively. The memory cell includes an electrically conductive electrode on the charge transfer blocking layer.

Charge-trapping nonvolatile memory devices having gate structures therein with improved blocking layers

A semiconductor integrated circuit device is provided. The semiconductor integrated circuit device includes a plurality of isolation regions which are formed within a semiconductor substrate and define active regions. A tunnel layer and a trap seed layer are formed in each of the active regions and are sequentially stacked between the isolation regions. A trap layer is formed on the trap seed layer and protrudes further than a top surface of each of the isolation regions. A blocking layer is formed on the trap layer. A gate electrode is formed on the blocking layer.

Growing community of inventors

Seongnam-si, South Korea

Dong-Chul Yoo