摘要:
A method for cleaning a semiconductor wafer surface comprises sweeping the semiconductor wafer surface and applying a first cleaning solution having a first pH, stop applying the first cleaning solution and applying a first rinsing solution to the semiconductor wafer surface, the first rinsing solution having a second pH that is significantly different from the first pH, sweeping the semiconductor wafer surface and applying a second cleaning solution having a third pH, and stop applying the second cleaning solution and applying a second rinsing solution to the semiconductor wafer surface, the second rinsing solution having a fourth pH that is significantly different from the third pH.
摘要:
A method for the cleaning of wafers typically during a chemical mechanical polishing (CMP) process. The method includes polishing a material layer on a wafer in sequential polishing steps, rinsing the wafer using a novel surfactant composition solution after at least one of the polishing steps and rinsing of the wafer using deionized water, respectively. The surfactant composition solution imparts a generally hydrophilic character to a hydrophobic material layer such as a high-k dielectric layer on the wafer. Consequently, the layer is rendered amenable to cleaning by deionized water, thereby significantly enhancing the removal of particles from the layer and reducing the number of defects related to the CMP process.
摘要:
A method of protecting a low k dielectric layer that is preferably comprised of a material containing Si, O, C, and H is described. The dielectric layer is subjected to a gas plasma that is generated from a CXHY gas which is preferably ethylene. Optionally, hydrogen may be added to the CXHY gas. Another alternative is a two step plasma process involving a first plasma treatment of CXHY or CXHY combined with H2 and a second plasma treatment with H2. The modified dielectric layer provides improved adhesion to anti-reflective layers and to a barrier metal layer in a damascene process. The modified dielectric layer also has a low CMP rate that prevents scratch defects and an oxide recess from occurring next to the metal layer on the surface of the damascene stack. The plasma treatments are preferably done in the same chamber in which the dielectric layer is deposited.
摘要翻译:描述了保护低k电介质层的方法,其优选由含有Si,O,C和H的材料组成。 对电介质层进行气化等离子体,该等离子体是由优选乙烯的C X H Y气产生的。 任选地,可以将氢气加入到C 1 H 2 H 2 O气体中。 另一种替代方案是涉及第一等离子体处理C X> Y Y or SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB SUB >与H 2 H 2结合,并且与H 2 2进行第二等离子体处理。 改进的介电层在镶嵌工艺中提供对抗反射层和阻挡金属层的改善的粘合性。 改进的介电层也具有低CMP速率,其防止划痕缺陷和氧化物凹陷在镶嵌层的表面上邻近金属层发生。 等离子体处理优选在沉积介电层的相同的室中进行。
摘要:
A method for forming a dielectric insulating layer with increased hydrophilicity for improving adhesion of an adjacently deposited material layer in semiconductor device manufacturing including providing a semiconductor wafer having a process surface for forming a dielectric insulting layer thereover; depositing the dielectric insulating layer; and, subjecting the dielectric insulating layer including an exposed surface to a hydrophilicity increasing treatment including at least one of a dry plasma treatment and a wet process including contacting the exposed surface with a hydrophilicity increasing solution including a surfactant said wet process followed by a baking process to improve an adhesion of an adjacently deposited material layer.
摘要:
A semiconductor device 100 includes a low-k dielectric insulator 104. In the preferred embodiment, a low-k dielectric material 104 is deposited. This material 104 is then cured using a plasma cure step. The cure process causes the density of the top portion 106 of layer 104 to be increased. The higher density portion 106, however, also has a higher dielectric constant. As a result, the dielectric constant of the layer 104 can be reduced by removing this higher density portion 106. This leads to a lower dielectric constant (e.g., less than about 3) of the bulk film.
摘要:
An apparatus and method suitable for the pre-conditioning of a polishing pad on a CMP apparatus prior to the polishing of production wafers on the apparatus. The apparatus includes a pre-conditioning arm on which is mounted an ingot of suitable material. In use, the ingot is pressed against the polishing surface of the rotating polishing pad for a selected period of time to increase the temperature of the polishing surface by friction. The pre-conditioned polishing pad facilitates uniform polishing rates of production semiconductor wafers subsequently polished on the apparatus.
摘要:
A method for thinning a wafer is provided. In one embodiment, a wafer is provided having a plurality of semiconductor chips, the wafer having a first side and a second side opposite the first side, wherein each of the chips includes a set of through silicon vias (TSVs), each of the TSVs substantially sealed by a liner layer and a barrier layer. A wafer carrier is provided for attaching to the second side of the wafer. The first side of the wafer is thinned and thereafer recessed to partially expose portions of the liner layers, barrier layers and the TSVs protruding from the wafer. An isolation layer is deposited over the first side of the wafer and the top portions of the liner layers, barrier layers and the TSVs. Thereafter, an insulation layer is deposited over the isolation layer. The insulation layer is then planarized to expose top portions of the TSVs. A dielectric layer is deposited over the planarized first side of the wafer. One or more electrical contacts are formed in the dielectric layer for electrical connection to the exposed one or more TSVs.
摘要:
Embodiments of a polisher for chemical mechanical planarization. The polisher includes a polishing pad structure containing a first reactant therein, and a second reactant in a polishing environment over the polishing pad structure. The first reactant and the second reactant react endothermically upon contact when polishing a wafer surface between the polishing pad structure and the polishing environment.
摘要:
The disclosure provides mechanisms of performing metal chemical-mechanical polishing (CMP) without significant loss of copper and a dielectric film of damascene structures. The mechanisms use a metal CMP stop layer made of a low-k dielectric film with a porogen, which significantly reduces the removal rate of the metal CMP stop layer by metal CMP. The metal CMP stop layer is converted into a porous low-k dielectric film after a cure (or curing) to remove or convert the porogen. The low-k value, such as equal to or less than about 2.6, of the metal CMP stop layer makes the impact of using of the metal CMP stop layer on RC delay from minimum to none. Further the CMP stop layer protects the porous low-k dielectric film underneath from exposure to water, organic compounds, and mobile ions in the CMP slurry.
摘要:
A method for thinning a wafer is provided. In one embodiment, a wafer is provided having a plurality of semiconductor chips, the wafer having a first side and a second side opposite the first side, wherein each of the chips includes a set of through silicon vias (TSVs), each of the TSVs substantially sealed by a liner layer and a barrier layer. A wafer carrier is provided for attaching to the second side of the wafer. The first side of the wafer is thinned and thereafer recessed to partially expose portions of the liner layers, barrier layers and the TSVs protruding from the wafer. An isolation layer is deposited over the first side of the wafer and the top portions of the liner layers, barrier layers and the TSVs. Thereafter, an insulation layer is deposited over the isolation layer. The insulation layer is then planarized to expose top portions of the TSVs. A dielectric layer is deposited over the planarized first side of the wafer. One or more electrical contacts are formed in the dielectric layer for electrical connection to the exposed one or more TSVs.