摘要:
Provided are methods of depositing films comprising alloys of aluminum, which may be suitable as N-metal films. Certain methods comprise exposing a substrate surface to a metal halide precursor comprising a metal halide selected from TiCl4, TaCl5 and HfCl4 to provide a metal halide at the substrate surface; purging metal halide; exposing the substrate surface to an alkyl aluminum precursor comprising one or more of dimethyaluminum hydride, diethylhydridoaluminum, methyldihydroaluminum, and an alkyl aluminum hydrides of the formula [(CxHy)3-aAlHa]n, wherein x has a value of 1 to 3, y has a value of 2x+2, a has a value of 1 to 2, and n has a value of 1 to 4; and exposing the substrate surface to an alane-containing precursor comprising one or more of dimethylethylamine alane, methylpyrrolidinealane, di(methylpyrolidine)alane, and trimethyl amine alane borane. Other methods comprise exposing a substrate surface to a metal precursor and trimethyl amine alane borane.
摘要翻译:提供了沉积包括铝合金的膜的方法,其可以适合作为N-金属膜。 某些方法包括将衬底表面暴露于包含选自TiCl 4,TaCl 5和HfCl 4的金属卤化物的金属卤化物前体,以在衬底表面提供金属卤化物; 清洗金属卤化物; 将基材表面暴露于包含一种或多种二氢化铝氢化物,二乙基氢化铝,甲基二氢铝和式[(C x H y)3-a AlHa] n的烷基铝氢化物的烷基铝前体,其中x具有1至3的值,y 具有2x + 2的值,a具有1至2的值,并且n具有1至4的值; 并将基材表面暴露于含有二甲基乙基胺丙烷,甲基吡咯烷烃,二(甲基吡咯烷)甲烷和三甲基胺丙烷硼烷中的一种或多种的含Alane的前体。 其他方法包括将基底表面暴露于金属前体和三甲基胺丙烷硼烷。
摘要:
Provided are methods for making metal gates suitable for FinFET structures. The methods described herein generally involve forming a high-k dielectric material on a semiconductor substrate; depositing a high-k dielectric cap layer over the high-k dielectric material; depositing a PMOS work function layer having a positive work function value; depositing an NMOS work function layer; depositing an NMOS work function cap layer over the NMOS work function layer; removing at least a portion of the PMOS work function layer or at least a portion of the NMOS work function layer; and depositing a fill layer. Depositing a high-k dielectric cap layer, depositing a PMOS work function layer or depositing a NMOS work function cap layer may comprise atomic layer deposition of TiN, TiSiN, or TiAlN. Either PMOS or NMOS may be deposited first.
摘要:
Provided are devices and methods utilizing TiN and/or TaN films doped with Si, Al, Ga, Ge, In and/or Hf. Such films may be used as a high-k dielectric cap layer, PMOS work function layer, aluminum barrier layer, and/or fluorine barrier. These TiSiN, TaSiN, TiAlN, TaAlN, TiGaN, TaGaN, TiGeN, TaGeN, TiInN, TaInN, TiHfN or TaHfN films can be used where TiN and/or TaN films are traditionally used, or they may be used in conjunction with TiN and/or TaN.
摘要:
Methods for depositing a contact metal layer in contact structures of a semiconductor device are provided. In one embodiment, a method for depositing a contact metal layer for forming a contact structure in a semiconductor device is provided. The method comprises performing a cyclic metal deposition process to deposit a contact metal layer on a substrate and annealing the contact metal layer disposed on the substrate. The cyclic metal deposition process comprises exposing the substrate to a deposition precursor gas mixture to deposit a portion of the contact metal layer on the substrate, exposing the portion of the contact metal layer to a plasma treatment process, and repeating the exposing the substrate to a deposition precursor gas mixture and exposing the portion of the contact metal layer to a plasma treatment process until a predetermined thickness of the contact metal layer is achieved.
摘要:
Embodiments of the invention provide methods for forming materials on a substrate used for metal gate and other applications. In one embodiment, a method includes forming a cobalt stack over a barrier layer disposed on a substrate by depositing a cobalt layer during a deposition process, exposing the cobalt layer to a plasma to form a plasma-treated cobalt layer during a plasma process, and repeating the cobalt deposition process and the plasma process to form the cobalt stack containing a plurality of plasma-treated cobalt layers. The method further includes exposing the cobalt stack to an oxygen source gas to form a cobalt oxide layer from an upper portion of the cobalt stack during a surface oxidation process and heating the remaining portion of the cobalt stack to a temperature within a range from about 300° C. to about 500° C. to form a crystalline cobalt film during a thermal annealing crystallization process.
摘要:
Methods for forming a contact metal layer in a contact structure in semiconductor devices are provided in the present invention. In one embodiment, a method for depositing a contact metal layer for forming a contact structure in a semiconductor device includes pulsing a deposition precursor gas mixture to a surface of a substrate disposed in a metal deposition processing chamber, pulsing a purge gas mixture to an edge of the substrate, wherein the purge gas mixture includes at least a hydrogen containing gas and an inert gas, and forming a contact metal layer on the substrate from the first deposition precursor gas mixture.
摘要:
Embodiments of the invention provide methods for forming materials on a substrate used for metal gate and other applications. In one embodiment, a method includes forming a cobalt stack over a barrier layer disposed on a substrate by depositing a cobalt layer during a deposition process, exposing the cobalt layer to a plasma to form a plasma-treated cobalt layer during a plasma process, and repeating the cobalt deposition process and the plasma process to form the cobalt stack containing a plurality of plasma-treated cobalt layers. The method further includes exposing the cobalt stack to an oxygen source gas to form a cobalt oxide layer from an upper portion of the cobalt stack during a surface oxidation process and heating the remaining portion of the cobalt stack to a temperature within a range from about 300° C. to about 500° C. to form a crystalline cobalt film during a thermal annealing crystallization process.
摘要:
Methods for forming a contact metal layer in a contact structure in semiconductor devices are provided in the present invention. In one embodiment, a method for depositing a contact metal layer for forming a contact structure in a semiconductor device includes pulsing a deposition precursor gas mixture to a surface of a substrate disposed in a metal deposition processing chamber, pulsing a purge gas mixture to an edge of the substrate, wherein the purge gas mixture includes at least a hydrogen containing gas and an inert gas, and forming a contact metal layer on the substrate from the first deposition precursor gas mixture.
摘要:
Embodiments of the invention generally provide methods for depositing metal-containing materials and compositions thereof. The methods include deposition processes that form metal, metal carbide, metal silicide, metal nitride, and metal carbide derivatives by a vapor deposition process, including thermal decomposition, CVD, pulsed-CVD, or ALD. In one embodiment, a method for processing a substrate is provided which includes depositing a dielectric material having a dielectric constant greater than 10, forming a feature definition in the dielectric material, depositing a work function material conformally on the sidewalls and bottom of the feature definition, and depositing a metal gate fill material on the work function material to fill the feature definition, wherein the work function material is deposited by reacting at least one metal-halide precursor having the formula MXY, wherein M is tantalum, hafnium, titanium, and lanthanum, X is a halide selected from the group of fluorine, chlorine, bromine, or iodine, and y is from 3 to 5.
摘要:
Metal gate structures and methods for forming thereof are provided herein. In some embodiments, a method for forming a metal gate structure on a substrate having a feature formed in a high k dielectric layer may include depositing a first layer within the feature atop the dielectric layer; depositing a second layer comprising cobalt or nickel within the feature atop the first layer; and depositing a third layer comprising a metal within the feature atop the second layer to fill the feature, wherein at least one of the first or second layers forms a wetting layer to form a nucleation layer for a subsequently deposited layer, wherein one of the first, second, or third layers forms a work function layer, and wherein the third layer forms a gate electrode.