Abstract:
PURPOSE: A semiconductor devices and methods of forming the same are provided to improve the electrical property of a metal oxide by supplying an oxygen in the sacrificial oxide to a metal oxide. CONSTITUTION: A metal oxide layer is formed on a substrate(100) as a single layer or a multilayer. A sacrificial oxide is formed on the metal oxide layer. A thermal treatment process on the substrate having the sacrificial oxide. In the thermal treatment process, a free energy of the sacrificial oxide is higher than that of the metal oxide.
Abstract:
하부전극과 콘택 플러그 사이에 낮은 접촉 저항을 갖는 반도체 장치의 커패시터 및 그 제조방법이 개시되어 있다. 본 발명은 층간 절연막을 사이에 두고 기판과 연결되어 있고 강유전막을 구비하는 반도체 장치의 커패시터에 있어서, 상기 층간 절연막에 상기 기판이 노출되는 콘택홀이 형성되어 있고, 상기 콘택홀은 상기 커패시터의 하부전극과 연결되는 도전성 플러그로 채워져 있되, 적어도 상기 도전성 플러그의 상층부는 금속 실리사이드막인 것을 특징으로 하는 반도체 장치의 커패시터를 제공한다. 여기서, 상기 금속 실리사이드막은 내 산화성이 있는 코발트 또는 니켈 실리사이드막이며 하부전극이나 도전성 플러그 일부 또는 전체를 구성한다.
Abstract:
A method for manufacturing a semiconductor device is provided to restrain the degradation of dielectric characteristics and to control uniformly the thickness of first and second metallic gates using an enhanced dual gate structure. A dielectric film(102a,102b) is formed on a semiconductor substrate(100). A first metallic conductive layer with a first thickness is formed on the dielectric film. An etch rate of the first metallic conductive layer is decreased by annealing. A second metallic conductive layer with a second thickness larger than the first thickness is formed on the first metallic conductive layer. The second metallic conductive layer is selectively removed from a second region of the substrate by using an etch selectivity between the first and second metallic conductive layers. At this time, a first gate stack structure(115) with a first metallic gate(110) is formed on a first region of the substrate and a second gate stack structure(120) with a second metallic gate(104b) is formed on the second region of the substrate.
Abstract:
PURPOSE: A method for forming a metal oxide thin film of a semiconductor device by CVD(chemical vapor deposition) method is provided to embody high capacitance by using a Ti-based oxide ferroelectric layer as a dielectric layer of a capacitor. CONSTITUTION: A Ti source that is formed by melting Ti(C11H19O2)2(O-t-C4H9)2 with a solvent and an additive source are evaporated to form reaction gas. The evaporated reaction gas is transferred to the upper surface of a semiconductor substrate by using carrier gas to form a Ti-based oxide ferroelectric layer on the semiconductor substrate.
Abstract:
본 발명은 선택적 금속산화막 형성단계를 구비하는 반도체 소자의 제조방법에 대한 것이다. 본 발명에 따른 반도체 소자 제조방법은 먼저, 산소원자를 포함하고 소정 부위가 외부로 노출된 절연막을 반도체 기판에 제공한다. 그런 다음, 산소와 반응성이 있는 금속 전구가스(metal precursor)에 상기 반도체 기판을 노출시켜 상기 절연막의 노출면 상에 소정 두께의 금속산화막을 선택적으로 형성한다.
Abstract:
PURPOSE: A method for manufacturing a capacitor of a ferroelectric memory device is provided to prevent contact resistance between a capacitor and a conductive plug from being affected by a heat treatment process, by performing the heat treatment process after the second conductive layer for an upper electrode is formed. CONSTITUTION: The first conductive layer for a lower electrode is formed on a semiconductor substrate(11). A ferroelectric layer is formed on the first conductive layer. The second conductive layer for the upper electrode is formed on the ferroelectric layer. A heat treatment process is performed regarding the resultant structure having the second conductive layer. The first conductive layer, the ferroelectric layer and the second conductive layer are patterned to form the lower electrode(17a), a ferroelectric pattern(19a) and the upper electrode(23).
Abstract:
PURPOSE: A semiconductor memory device including a capacitor protection layer is to provide a capacitor protection layer and/or a material layer for low resistance contact which prevents a capacitor dielectric from being degraded by impurity diffusion. CONSTITUTION: A capacitor includes a storage electrode(122), a plate electrode(126) and a capacitor dielectric layer(124) inserted between the storage electrode and the plate electrode. A multi encapsulating layer(EL) includes a material layer composed of at least two different insulating materials, surrounding the entire surface of the capacitor. An insulating layer is formed on the multi encapsulating layer. A metal contact(136) penetrates the multi encapsulating layer and the insulating layer to contact the plate electrode.
Abstract:
PURPOSE: A ferroelectric memory capacitor and forming method thereof are provided to compensate a negative electric charge reduced according to oxygen vacancy. CONSTITUTION: The capacitor comprises a lower electrode, a ferroelectric layer formed on the lower electrode and an upper electrode formed on the ferroelectric layer. A first doping layer is formed between the lower electrode and the ferroelectric layer and having an atom to compensate a negative electric charge according to oxygen vacancy generated in the ferroelectric layer. A second doping layer is formed between the ferroelectric layer and the upper layer and having an atom to compensate a negative electric charge according to oxygen vacancy generated in the ferroelectric layer.