Abstract:
An improved method for applying polymeric antireflective coatings to substrate surfaces and the resulting precursor structures are provided. Broadly, the methods comprise plasma enhanced chemical vapor depositing (PECVD) a polymer on the substrate surfaces. The most preferred starting monomers are 4-fluorostyrene, 2,3,4,5,6-pentafluorostyrene, and allylpentafluorobenzene. The PECVD processes comprise subjecting the monomers to sufficient electric current and pressure so as to cause the monomers to sublime to form a vapor which is then changed to the plasma state by application of an electric current. The vaporized monomers are subsequently polymerized onto a substrate surface in a deposition chamber. The inventive methods are useful for providing highly conformal antireflective coatings on large surface substrates having super submicron (0.25 nullm or smaller) features. The process provides a much faster deposition rate than conventional chemical vapor deposition (CVD) methods, is environmentally friendly, and is economical
Abstract:
Novel processes of applying a thin, uniform, conformal organic polymeric film by a wide variety of deposition processes into lithography pattern substrates are provided. The inventive processes result in shrinking of the gaps in the lithography pattern equally, thus producing a smaller dimension. The amount of pattern shrinkage is selectively controlled by controlling the deposition rate to provide the desired final structure dimension. A wide variety of organic films is used as materials for these films. The inventive methods are applicable to any patterning technique used in lithography to provide a reduction in pattern sizes. Examples of the applicable device levels include the production of gate layers, ion implantation of active device layers and substantive metal layers, dielectric patterning, interconnect processes produced by damascene, dual damascene, backend packaging layers, and devices requiring multiple layers deposited by electrodeposition, CVD or sputtering. The inventive methods are useful for providing highly conformal coatings on large surface substrates having super submicron (i.e., 0.15 nullm or smaller) features. The process is environmentally friendly and relatively low cost compared to other options.
Abstract:
An improved method for applying polymeric antireflective coatings to substrate surfaces and the resulting precursor structures are provided. Broadly, the methods comprise plasma enhanced chemical vapor depositing (PECVD) a polymer on the substrate surfaces. The PECVD processes comprise providing a quantity of a polymer generated by introducing monomer vapors into a plasma state followed by polymerization thereof, with assistance of plasma energy, onto the surface of a substrate. The most preferred starting monomers are phenylacetylene, 4-ethynyltoluene, and 1-ethynyl-2-fluorobenzene. The inventive methods are useful for providing highly conformal antireflective coatings on large surface substrates having super submicron (0.25 nullm or smaller) features. The process provides a much faster deposition rate than conventional chemical vapor deposition (CVD) methods, is environmentally friendly, and is economical.
Abstract:
An improved method for applying polymeric antireflective coatings to substrate surfaces and the resulting precursor structures are provided. Broadly, the methods comprise plasma enhanced chemical vapor depositing (PECVD) a polymer on the substrate surfaces. The most preferred starting monomers are 4-fluorostyrene, 2,3,4,5,6-pentafluorostyrene, and allylpentafluorobenzene. The PECVD processes comprise subjecting the monomers to sufficient electric current and pressure so as to cause the monomers to sublime to form a vapor which is then changed to the plasma state by application of an electric current. The vaporized monomers are subsequently polymerized onto a substrate surface in a deposition chamber. The inventive methods are useful for providing highly conformal antireflective coatings on large surface substrates having super submicron (0.25 nullm or smaller) features. The process provides a much faster deposition rate than conventional chemical vapor deposition (CVD) methods, is environmentally friendly, and is economical.