Abstract:
The invention relates generally to processes for enhancing the deposition of noble metal thin films on a substrate by atomic layer deposition. Treatment with gaseous halides or metalorganic compounds reduces the incubation time for deposition of noble metals on particular surfaces. The methods may be utilized to facilitate selective deposition. For example, selective deposition of noble metals on high-k materials relative to insulators can be enhanced by pretreatment with halide reactants. In addition, halide treatment can be used to avoid deposition on the quartz walls of the reaction chamber.
Abstract:
A hybrid deposition process of CVD and ALD, called NanoLayer Deposition (NLD) is provided. The nanolayer deposition process is a cyclic sequential deposition process, comprising the first step of introducing a first plurality of precursors to deposit a thin film with the deposition process not self-limiting, then a second step of purging the first set of precursors and a third step of introducing a second plurality of precursors to modify the deposited thin film. The deposition step in the NLD process using the first set of precursors is not self limiting and is a function of substrate temperature and process time. The second set of precursors modifies the already deposited film characteristics. The second set of precursors can treat the deposited film such as a modification of film composition, a doping or a removal of impurities from the deposited film. The second set of precursors can also deposit another layer on the deposited film. The additional layer can react with the existing layer to form a compound layer, or can have minimum reaction to form a nanolaminate film.
Abstract:
Method of depositing a film having a substantially uniform thickness by means of chemical vapor deposition, comprising: providing a reaction chamber; providing a substrate in said reaction chamber; subjecting the substrate to a series of deposition cycles, wherein each deposition cycle includes the steps of: (a) during a first time interval, supplying a first reactant to the reaction chamber; (b) during a second time interval, supplying a second reactant to the reaction chamber; and (c) during a third time interval, supplying neither the first nor the second reactant to the reaction chamber; wherein a start of the second time interval lies within the first time interval, such that a pre-exposure interval exists between a start of the first time interval and the start of the second time interval, during which pre-exposure interval the first reactant is supplied to the reaction chamber while the second reactant is not.
Abstract:
The present invention relates generally to methods and apparatus for the controlled growing of material on substrates. According to embodiments of the present invention, a precursor fed is split in to two paths from a precursor source. One of the paths is restricted in a continuous manner. The other path is restricted in a periodic manner. The output of the two paths converges at a point prior to entry of the reactor. Therefore, a single precursor source is able to fed precursor in to a reactor under two different conditions, one which can be seen as mimicking ALD conditions and one which can be seen as mimicking CVD conditions. This allows for an otherwise single mode reactor to be operated in a plurality of modes including one or more ALD/CVD combination modes.
Abstract:
The invention relates generally to processes for enhancing the deposition of noble metal thin films on a substrate by atomic layer deposition. Treatment with gaseous halides or metalorganic compounds reduces the incubation time for deposition of noble metals on particular surfaces. The methods may be utilized to facilitate selective deposition. For example, selective deposition of noble metals on high-k materials relative to insulators can be enhanced by pretreatment with halide reactants. In addition, halide treatment can be used to avoid deposition on the quartz walls of the reaction chamber.
Abstract:
Metallic layers can be selectively deposited on one surface of a substrate relative to a second surface of the substrate. In some embodiments, the metallic layers are selectively deposited on copper instead of insulating or dielectric materials. In some embodiments, a first precursor forms a layer on the first surface and is subsequently reacted or converted to form a metallic layer. The deposition temperature may be selected such that a selectivity of above about 50% or even about 90% is achieved.
Abstract:
The present disclosure relates to the deposition of dopant films, such as doped silicon oxide films, by atomic layer deposition processes. In some embodiments, a substrate in a reaction space is contacted with pulses of a silicon precursor and a dopant precursor, such that the silicon precursor and dopant precursor adsorb on the substrate surface. Oxygen plasma is used to convert the adsorbed silicon precursor and dopant precursor to doped silicon oxide.
Abstract:
A method for fabricating a semiconductor device comprising a gate stack of a gate dielectric and a gate electrode, the method including forming a gate dielectric layer over a semiconductor substrate the gate dielectric layer being a metal oxide or semimetal oxide having a first electronegativity; forming a dielectric VT adjustment layer, the dielectric VT adjustment layer being a metal oxide or semimetal oxide having a second electronegativity; and forming a gate electrode over the gate dielectric layer and the VT adjustment layer; wherein the Effective Work Function of said gate stack is tuned to a desired value by tuning the thickness and composition of the dielectric VT adjustment layer and wherein the second electronegativity value is higher than both the first electronegativity value and the electronegativity of Al2O3.
Abstract translation:一种用于制造半导体器件的方法,包括栅极电介质和栅电极的栅极堆叠,所述方法包括在半导体衬底上形成具有第一电负性的金属氧化物或半金属氧化物的栅极介电层; 形成电介质VT调整层,电介质VT调整层是具有第二电负性的金属氧化物或半金属氧化物; 以及在所述栅极电介质层和所述VT调整层上形成栅电极; 其中所述栅极叠层的有效功函数通过调谐介电VT调整层的厚度和组成而被调谐到期望值,并且其中第二电负性值高于第一电负性值和Al 2 O 3的电负性。
Abstract:
A method for processing solar cells comprising: providing a vertical furnace to receive an array of mutually spaced circular semiconductor wafers for integrated circuit processing; composing a process chamber loading configuration for solar cell substrates, wherein a size of the solar cell substrates that extends along a first surface to be processed is smaller than a corresponding size of the circular semiconductor wafers, such that multiple arrays of mutually spaced solar cell substrates can be accommodated in the process chamber, loading the solar cell substrates into the process chamber; subjecting the solar cell substrates to a process in the process chamber.
Abstract:
Atomic layer deposition (ALD) processes for forming Group VA element containing thin films, such as Sb, Sb—Te, Ge—Sb and Ge—Sb—Te thin films are provided, along with related compositions and structures. Sb precursors of the formula Sb(SiR1R2R3)3 are preferably used, wherein R1, R2, and R3 are alkyl groups. As, Bi and P precursors are also described. Methods are also provided for synthesizing these Sb precursors. Methods are also provided for using the Sb thin films in phase change memory devices.