摘要:
A method for preventing formation of photoresist scum. First, a substrate on which a dielectric layer is formed is provided. Next, a non-nitrogen anti-reflective layer is formed on the dielectric layer. Finally, a photoresist pattern layer is formed on the non-nitrogen anti-reflective layer. During the formation of the photoresist pattern layer, the non-nitrogen anti-reflective layer does not react with the photoresist pattern layer, thus not forming photoresist scum. This prevents undesired etching profile and critical dimension (CD) change due to presence of photoresist scum. The non-nitrogen anti-reflective layer can be silicon-rich oxide (SiOx) or hydrocarbon-containing silicon-rich oxide (SiOxCy:H).
摘要翻译:防止光刻胶浮渣形成的方法。 首先,提供形成介电层的基板。 接下来,在电介质层上形成非氮抗反射层。 最后,在非氮抗反射层上形成光刻胶图形层。 在形成光致抗蚀剂图案层期间,非氮抗反射层不与光致抗蚀剂图案层反应,因此不形成光致抗蚀剂浮渣。 这防止由于存在光致抗蚀剂浮渣而引起的不期望的蚀刻轮廓和临界尺寸(CD)变化。 非氮抗反射层可以是富氧氧化物(SiO 2)或含烃的富含氧的氧化物(SiO x x C y) SUB>:H)。
摘要:
A method for plasma treating an etched opening formed in a porous low-K material to improve barrier layer integrity including providing a substrate comprising an etched opening formed in an insulating dielectric layer including porous low-K silicon oxide according to an overlying patterned resist layer; plasma treating according to a plasma process the etched opening to remove the resist layer and increase a surface density of the insulating dielectric layer within the etched opening; and, blanket depositing a barrier layer over the etched opening.
摘要:
Composite ALD-formed diffusion barrier layers. In a preferred embodiment, a composite conductive layer is composed of a diffusion barrier layer and/or a low-resistivity metal layer formed by atomic layer deposition (ALD) lining a damascene opening in dielectrics, serving as diffusion blocking and/or adhesion improvement. The preferred composite diffusion barrier layers are dual titanium nitride layers or dual tantalum nitride layers, triply laminar of tantalum, tantalum nitride and tantalum-rich nitride, or tantalum, tantalum nitride and tantalum, formed sequentially on the opening by way of ALD.
摘要:
A semiconductor device with improved resistance to delamination and method for forming the same the method including providing a semiconductor wafer comprising a metallization layer with an uppermost etch stop layer; forming at least one adhesion promoting layer on the etch stop layer; and, forming an inter-metal dielectric (IMD) layer on the at least one adhesion promoting layer.
摘要:
A method for forming a field effect transistor device employs a self-aligned etching of a semiconductor substrate to form a recessed channel region in conjunction with a pair of raised source/drain regions. The method also provides for forming and thermally annealing the pair of source/drain regions prior to forming a pair of lightly doped extension regions within the field effect transistor device. In accord with the foregoing features, the field effect transistor device is fabricated with enhanced performance.
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 semiconductor device having an upper level of metallization interconnected with a lower level of metallization and a method of forming the device is provided. Accordingly, the process of the invention includes capping the lower level of metallization with an thin stop layer having a thickness of less than 300 Å and preferably about 100 Å such that the etching and ashing processes of removing photoresist and intermediate portions of etch stop layer is accomplished without damage to the lower level metallization.
摘要:
A method for forming at least one barrierless, embedded metal structure comprising the following steps. A structure having a patterned dielectric layer formed thereover with at least one opening exposing at least one respective portion of the structure. Respective metal structures are formed within each respective opening. The first dielectric layer is removed to expose the top and at least a portion of the side walls of the respective at least one metal structure. A dielectric barrier layer is formed over the structure and the exposed top of the respective metal structure. A second, conformal dielectric layer is formed over the dielectric barrier layer to complete the respective barrierless at least one metal structure embedded within the second, conformal dielectric layer. The dielectric barrier layer preventing diffusion of the metal comprising the respective at least one metal structure into the second, conformal dielectric layer.
摘要:
Methods are disclosed to improve the planarization of copper damascene by the steps of patterning on the copper damascene a photoresist using a reverse tone photo mask or a reverse tone photo mask of the metal lines, removing excess copper by reverse current plating or by dry or wet chemical etching, stripping the photo resist, and a subsequent chemical mechanical planarization of the copper damascene. Lastly a cap layer is applied to the planarized surface. In a variant of the disclosed method a more relaxed reverse tone photo mask of the metal lines is used, which may be more desirable for practical use. These steps provide benefits such as improved uniformity of the wafer surface, reduce the dishing of metal lines (trenches) and pads, and reduce oxide erosion.
摘要:
A method for improving CMP polishing uniformity and reducing or preventing cracking in a semiconductor wafer process surface by reducing stress concentrations adjacent to dummy features including providing a semiconductor wafer process surface including active features and dummy features formed adjacently to the active features to improve a CMP polishing uniformity said dummy features each shaped to define an enclosed area in said semiconductor wafer process surface plane comprising at least 5 corner portions; and, performing a CMP process on said semiconductor wafer process surface.