Abstract:
Methods of forming a zirconium hafnium oxide thin layer on a semiconductor substrate by supplying tetrakis(ethylmethylamino)zirconium ([Zr{N(C2H5)(CH3)}4], TEMAZ) and tetrakis(ethylmethylamino)hafnium ([Hf{N(C2H5)(CH3)}4], TEMAH) to a substrate are provided. The TEMAZ and the TEMAH may be reacted with an oxidizing agent. The thin layer including zirconium hafnium oxide may be used for a gate insulation layer in a gate structure, a dielectric layer in a capacitor, or a dielectric layer in a flash memory device.
Abstract translation:通过供应四(乙基甲基氨基)锆([Zr(N(C 2 H 5)(CH 3)} 4],TEMAZ)和四(乙基甲基氨基)铪([Hf(N(C 2 H 5))的方式在半导体衬底上形成氧化锆铪薄膜 )(CH 3)} 4],TEMAH)。 TEMAZ和TEMAH可与氧化剂反应。 包括氧化铪的薄层可以用于栅极结构中的栅极绝缘层,电容器中的电介质层或闪存器件中的介电层。
Abstract:
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.
Abstract:
A semiconductor device and/or gate structure having a composite dielectric layer and methods of manufacturing the same is provided. In the semiconductor device, gate structure, and methods provided, a first conductive layer may be formed on a substrate. A native oxide layer formed on the first conductive layer may be removed. A surface of the first conductive layer may be nitrided so that the surface may be altered into a nitride layer. A composite dielectric layer including the first and/or second dielectric layers may be formed on the nitride layer. A second conductive layer may be formed on the composite dielectric layer. The first dielectric layer may include a material having a higher dielectric constant. The second dielectric layer may be capable of suppressing crystallization of the first dielectric layer.
Abstract:
A method of manufacturing a semiconductor device comprises forming a lower electrode on a substrate using a titanium chloride pulsed deposition (TPD) process, forming a high-k dielectric layer on the lower electrode, and forming an upper electrode on the dielectric layer using a TPD process. The method further comprises forming a reaction barrier layer between the upper or lower electrode and the dielectric layer using an atomic layer deposition (ALD) process. The upper electrode is preferably formed with a processing temperature between 350 and 500° C., and the dielectric layer preferably comprises zirconium oxide.
Abstract:
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).
Abstract translation: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)。
Abstract:
Methods of supplying a source to a reactor include charging a gaseous source into a charging volume by selectively activating a source charger coupled between the charging volume and a source reservoir. The gaseous source is then supplied from the charging volume into a deposition process reactor by selectively activating a source supplier coupled between the charging volume and the reactor after the gaseous source in the charging volume attains a desired internal pressure. Apparatus for supplying a source and methods and apparatus for depositing an atomic layer are also provided.
Abstract:
Methods of forming Ta2O5 layers in a process chamber are disclosed. A Ta2O5 layer can be maintained at a first temperature that is less than a temperature for crystallization of the Ta2O5 layer. At least one of a position of the Ta2O5 layer in the process chamber relative to the heater and a pressure in the process chamber is changed to increase the temperature of the Ta2O5 layer to about the temperature for crystallization.