摘要:
Provided are semiconductor devices and methods of fabricating the same. The methods may include forming a molding layer on a semiconductor substrate. A storage electrode passing through the molding layer is formed. A part of the storage electrode is exposed by partially etching the molding layer. A sacrificial oxide layer is formed by oxidizing the exposed part of the storage electrode. The partially-etched molding layer and the sacrificial oxide layer are removed. A capacitor dielectric layer is formed on the substrate of which the molding layer and the sacrificial oxide layer are removed. A plate electrode is formed on the capacitor dielectric layers.
摘要:
In a method of forming a target layer having a uniform composition of constituent materials, a first precursor including a first central atom and a ligand is chemisorbed on a first reaction site of an object. The ligand or the first central atom is then removed to form a second reaction site. A second precursor including a second central atom is then chemisorbed on the second reaction site.
摘要:
In a method of forming an oxide layer using an atomic layer deposition and a method of forming a capacitor of a semiconductor device using the same, a precursor including an amino functional group is introduced onto a substrate to chemisorb a portion of the precursor on the substrate. Then, the non-chemisorbed precursor is removed. Thereafter, an oxidant is introduced onto the substrate to chemically react the chemisorbed precursor with the oxidant to form an oxide layer on the substrate. A deposition rate is fast and an oxide layer having a good deposition characteristic may be obtained. Also, a thin oxide film having a good step coverage and a decreased pattern loading rate can be formed.
摘要:
In some embodiments, a multi-layer dielectric structure, such as a capacitor dielectric region, is formed by forming a first dielectric layer on a substrate according to a CVD process and forming a second dielectric layer directly on the first dielectric layer according to an ALD process. In further embodiments, a multi-layer dielectric structure is formed by forming a first dielectric layer on a substrate according to an ALD process and forming a second dielectric layer directly on the first dielectric layer according to a CVD process. The CVD-formed layers may comprise one selected from the group consisting of SiO2, Si3N3, Ta2O5, HfO2, ZrO2, TiO2, Y2O3, Pr2O3, La2O3, Nb2O5, SrTiO3 (STO), BaSrTiO3 (BST) and PbZrTiO3 (PZT). The ALD-formed layers may comprise one selected from the group consisting of SiO2, Si3N3, Al2O3, Ta2O5, HfO2, ZrO2, TiO2, Y2O3, Pr2O3, La2O3, Nb2O5, SrTiO3 (STO), BaSrTiO3 (BST) and PbZrTiO3 (PZT).
摘要翻译:在一些实施例中,通过根据CVD工艺在衬底上形成第一电介质层并根据ALD在第一电介质层上直接形成第二电介质层来形成诸如电容器电介质区域的多层电介质结构 处理。 在另外的实施例中,通过根据ALD工艺在衬底上形成第一电介质层并根据CVD工艺在第一电介质层上直接形成第二电介质层来形成多层电介质结构。 CVD形成的层可以包括从由SiO 2,Si 3 N 3 N 3,Ta 2 O 3, O 2,HfO 2,ZrO 2,TiO 2,Y 2,N 2, 3 O 3,3/3,3,3,3,3,3,3,3,3, (STO),BaSrTiO 3(BST)和PbZrTiO 3(BST)3(S0) / SUB>(PZT)。 ALD形成的层可以包括从由SiO 2,Si 3 N 3 N 3,Al 2 O 3, 3,O 3,O 2 O 5,HfO 2,ZrO 2,N 2, ,TiO 2,Y 2 O 3,Pr 2 O 3,La Nb 2 O 3,SrTiO 3(STO),N 2 O 3, BaSrTiO 3(BST)和PbZrTiO 3 3(PZT)。