Abstract:
반응 조건을 자유롭게 변화시켜 효과적으로 다층막을 형성할 수 있는 반도체 소자의 박막 형성방법이 개시되어 있다. 챔버 내에 장착된 반도체 기판 상으로 복수개의 반응물질을 동시에 도입하거나, 순차적으로 도입한다. 상기 반응물질 각각의 분자들을 순차적으로 운동시킬 수 있는 에너지를 제공하여 상기 분자들을 개별적으로 활성화시킴으로서 반도체 기판에 박막을 형성한다. 이와 같이, 물질을 선택적으로 활성화시킬 수 있는 분위기를 조성함으로서 동일 챔버 내에서 서로 다른 종류의 박막을 형성할 수 있으므로, 공정 시간을 단축할 수 있다.
Abstract:
PURPOSE: A method of forming composite dielectric films and a method of manufacturing a capacitor using the same are provided to form sequentially thin films with different decomposition temperature in one chamber by performing an ALD(Atomic Layer Deposition) using a reaction material with a large temperature window. CONSTITUTION: A substrate is loaded in a reaction chamber(S10). A first metal(S20) is adsorbed on the substrate by providing a first metal compound to the reaction chamber(S20). A first dielectric film is formed by oxidizing the adsorbed first metal by providing oxidizing gas to the reaction chamber(S30). A second metal is adsorbed on the first dielectric film by providing a second metal compound to the reaction chamber(S40). The second metal compound is a metal alkoxide compound with electron withdrawing group substituted for at least one hydrogen. A second dielectric film is formed by oxidizing the adsorbed second metal by providing oxidizing gas to the reaction chamber(S50).
Abstract:
PURPOSE: A method and an apparatus for supplying source gas are provided to improve a deposition ratio by increasing the density of source gas according to the vapor pressure of vapor source. CONSTITUTION: The first heating process is performed on heat carrier gas for transporting a vapor source to form a layer on a substrate(S100). The second heating process is performed on heat the vapor source(S102). The vapor source is generated by bubbling the heated carrier gas within a liquid source of a receptacle(S200). The mixed source gas of the vapor source and the heated carrier gas is provided to a process chamber in order to form the layer on the substrate(S300). The third heating process is performed to heat purge gas and the heated gas is provided to the process chamber(S400).
Abstract:
PURPOSE: A semiconductor device and a method for manufacturing the same are provided to be capable of preventing junction leakage when forming a contact hole by uniformly forming a capping layer at the upper portion of a transition metal silicide layer. CONSTITUTION: A semiconductor device is provided with a semiconductor substrate(100) including a gate electrode(106) and a junction region(110) formed at both sides of the gate electrode, a transition metal silicide layer(115) selectively formed at the upper portion of the resultant structure, a capping layer(120) used as an etch stop layer, formed at the upper portion of the transition metal silicide layer, an interlayer dielectric(130) formed on the entire surface of the resultant structure, and a contact plug(140) formed in the interlayer dielectric and the capping layer for partially contacting the transition metal silicide layer.
Abstract:
복수 형태로 된 하부전극을 갖는 반도체 장치를 제공한다. 이 장치는 점점 가속화되는 디자인 룰의 축소에 대응해서 하부 전극의 쓰러짐을 방지하고 동시에 하부전극의 면적이 증가된 커패시터를 갖는다. 이를 위해서, 반도체 기판의 상부에 식각 저지막이 덮이고, 상기 식각 저지막을 갖는 반도체 기판의 상부에 하부전극이 배치된다. 상기 하부 전극은 식각 저지막을 관통해서 그 막의 상면으로부터 돌출되며, 차례로 적층된 스토리지 바 노드 및 스토리지 주형 노드로 이루어진다. 계속해서. 상기 스토리지 바 노드, 스토리지 주형 노드 및 식각 저지막에 유전막이 덮이고, 상기 유전막의 상면에 상부전극이 덮인다. 이때에, 상기 스토리지 주형 노드 및 스토리지 바 노드는 각각이 실린더 형태(Cylinder Shape) 및 바 형태(Bar Shape)를 가지며, 상기 스토리지 주형 노드는 스토리지 바 노드보다 작은 두께를 갖는다. 이로써, 상기 하부 전극을 갖는 반도체 장치는 복수 형태로 된 하부전극을 통해서 증가된 정전용량을 갖는 커패시터를 가지고 아울러서 하부전극의 쓰러짐으로 인한 그 장치 내의 불량 셀의 발생을 최소화할 수 있다.
Abstract:
PURPOSE: A method for forming a metal oxide layer by an ALD(atomic layer deposition) method is provided to reduce impurities in a metal oxide layer and improve an electrical characteristic by increasing an ozone density to 300-500 Ng in forming the metal oxide layer. CONSTITUTION: Metal reactant is injected to a reaction chamber including a semiconductor substrate to make the metal reactant chemically absorbed into the substrate(25). The first purging process is performed on the reaction chamber by using inert gas to eliminate physically absorbed metal reactant(27). An ozone oxide agent of 300-500 Ng is injected to the reaction chamber to make the chemically absorbed metal reactant react with the ozone oxide agent so that a metal oxide layer of a unit of an atomic layer is formed(29). The second purging process is performed on the reaction chamber by using inert gas to eliminate the physically absorbed reactant(31).
Abstract:
PURPOSE: A gas supply method of an atomic layer deposition apparatus is provided to prevent the flowing backward of a reactive gas, thereby preventing the reaction with other reactive gases by supplying a reactive gas and a purge gas simultaneously. CONSTITUTION: At least two sorts of reactive gases are supplied to a gas reacting room(1) at regular intervals. A first reactive gas is supplied from a first gas supply unit(15), thereby forming a fist atomic layer, And then, a second reactive gas is supplied from a second gas supply unit(17), thereby forming a second atomic layer on the first atomic layer. When each of the reactive gases is supplied, a purge gas is supplied simultaneously.
Abstract:
PURPOSE: A bake apparatus for fabricating a semiconductor is provided to minimize contamination of a wafer in baking photoresist, by preventing the fume generated in the photoresist from being used as particles regarding the wafer while a net is used. CONSTITUTION: A bake oven(110) has a closed space of a box type. A heat plate(120) is installed inside the bake oven. A supporting member(125) upwardly protrudes from the upper surface of the heat plate to settle the wafer(50). The heat plate heats the wafer. The net(140) is higher than the heat plate, installed inside the bake oven. The net prevents the particles from dropping to the wafer. A temperature control unit(145) for controlling the temperature of the net is installed in a part of the net.