Abstract:
PURPOSE: A method for forming a metal interconnection of a semiconductor device and a contact structure manufactured thereby are provided to selectively form a metal film for interconnection inside a groove in a uniform manner and provide a contact structure manufactured by the metal interconnection forming method. CONSTITUTION: An inter-layer dielectric is formed on a semiconductor substrate. A predetermined region of the inter-layer dielectric is etched to form an inter-layer dielectric pattern(105) having a recessed region. A barrier metal film(109) is formed on a front surface of the resultant on which the inter-layer dielectric pattern(105) is formed. A material film(111) is formed on the semiconductor substrate on which the barrier metal film is formed to expose the barrier metal film within the recessed region. An anti-nucleation layer(113) is formed by performing a native oxidation to the material film in vacuum condition. A metal film is formed to fill a region surrounded by the exposed barrier metal film. Before the barrier metal film is formed, a resistant metal layer is formed on the front surface of the resultant on which the inter-layer dielectric pattern is formed.
Abstract:
원자층으로 이루어지는 계면 조절층을 형성한 후 그 위에 CVD 방법으로 Al막을 형성하여 표면 형상이 우수한 Al 배선층을 형성하는 방법에 관하여 개시한다. 본 발명에 따른 반도체 소자의 제조 방법에서는 반도체 기판상에 상기 반도체 기판의 도전 영역을 노출시키는 콘택홀을 포함하는 층간절연막을 형성한다. 상기 콘택홀의 내벽 및 상기 층간절연막의 상부에 연속적으로 증착된 복수의 원자층으로 이루어지는 계면 조절층을 수 Å ∼ 수십 Å의 두께로 형성한다. 상기 계면 조절층이 형성된 결과물상에 CVD 방법에 의하여 Al을 전면 증착하여 상기 콘택홀 내에 콘택 플러그를 형성하는 동시에 상기 층간절연막상에 상기 콘택 플러그와 연결되는 배선층을 형성한다.
Abstract:
PURPOSE: A method for manufacturing semiconductor device forming metal wiring layer using interface control layer are provided to obtain an Al wiring layer having good surface shape and enhance the reliability of the wiring layer. CONSTITUTION: A method for manufacturing semiconductor device forming metal wiring layer using interface control layer comprises a step forming a layer insulation film having a contact hole exposing the conductive area of a semiconductor substrate, a step forming an interface control layer on the layer insulation film, and a step forming a contact plug within the contact hole and forming a wiring layer connected to the contact plug by depositing Al using CVD method.
Abstract:
PURPOSE: A method for forming an aluminum(Al) interconnection layer by an atomic layer deposition is provided to improve the uniformity and step coverage of the Al layer. CONSTITUTION: In the method, a semiconductor substrate is loaded into a deposition chamber. Next, an Al source gas is supplied into the deposition chamber and then chemisorbed onto the semiconductor substrate to form the Al layer. Next, a purge gas is supplied into the deposition chamber without supplying the Al source gas, so that non-reacted Al source gas staying in the deposition chamber is removed and thereby the Al layer is completed. Thereafter, to form the Al layer to a required thickness, the steps of supplying the Al source gas and supplying the purge gas are repeatedly performed. Thereby, a multilayered Al layer is formed, allowing improvement in uniformity and step coverage. Preferably, the supply step of the purge gas is followed by the step of removing impurities in the Al layer by supplying an Al layer reducing gas into the deposition chamber without supplying the purge gas, and the step of removing non-reacted reducing gas by supplying the purge gas without supplying the reducing gas.
Abstract:
원자층 증착법에 의한 알루미늄층의 제조 방법에 대해 개시한다. 본 발명에 따르면, 먼저 알루미늄 증착 챔버내에 반도체 기판을 로딩한 후 알루미늄 소오스 가스를 증착 챔버내로 공급하여 반도체 기판상에 알루미늄 소오스 가스를 화학적으로 흡착시켜 알루미늄층을 형성한다. 다음에 알루미늄 소오스 가스의 공급을 차단하고 퍼지 가스를 증착 챔버내로 공급하여 증착 챔버내에 반응하지 않고 잔류하는 알루미늄 소오스 가스를 제거하여 알루미늄층을 완성한다. 그리고 알루미늄층을 필요로 하는 두께만큼 형성하기 위해서 알루미늄 소오스 가스 공급 단계와 퍼지 가스 공급 단계를 차례대로 반복 실시하여 다층의 알루미늄층을 형성한다. 본 발명에 따라 형성된 알루미늄층은 균일도가 높을 뿐만 아니라 단차 피복력도 크게 향상된다.
Abstract:
금속배선의 증착과 열처리를 반복하여 금속배선 표면의 거칠기를 개선시킬 수 있는 반도체 소자의 금속배선 형성방법을 개시한다. 이 방법은 금속배선의 하부구조가 구비된 반도체 기판을 화학기상증착 장치의 증착실내에 인입하는 단계와, 상기 반도체 기판상에 화학기상증착법으로 가장 우수한 표면형상을 갖는 임계두께만큼 금속을 증착하는 단계와, 증착되는 금속의 핵생성 자리를 제공할 수 있도록 상기 증착된 금속표면을 분위기 기체하에서 열처리하는 단계와, 상기 금속증착 단계와 상기 열처리 단계를 반복하여 상기 반도체 기판상에 원하는 두께만큼 금속층을 증착하는 것을 특징으로 한다.
Abstract:
PURPOSE: A nonvolatile memory device and a manufacturing method thereof are provided to improve a signal transmission speed in a cell array region and a peripheral circuit region. CONSTITUTION: A memory gate pattern and a non-memory gate pattern are separately formed on a substrate (1). The substrate includes a memory region and a non-memory region. The non-memory gate pattern includes an ohmic layer (8). The memory gate pattern does not include the ohmic layer. The memory gate pattern includes a tunnel insulation layer (3a), a floating gate pattern (5a), a blocking insulation layer (7), and a control gate electrode (9a).
Abstract:
A phase-change memory unit and a manufacturing method thereof and a phase change memory device including this and a manufacturing method thereof are provide to authorize current from a conductive construct to a first electrode or a bottom electrode and as a conductive construct and/or an ohmic layer pattern are contacted with the side or bottom surface of the first electrode or the bottom electrode. A phase-change memory unit comprises an isolation structure(210), a conductive construct(225), a first electrode(250), a phase change material layer pattern(275), a second electrode(280). The isolation structure is formed on a substrate(200). The isolation structure has an opening(215) exposing substrate. The conductive construct is formed within the opening. The first electrode has a side wall and a bottom surface contacted with the conductive construct. The phase change material layer pattern is formed on the first electrode and isolation structure. The second electrode is formed on the phase change material layer pattern.