摘要:
This invention is a residue-free vapor-phase process for etching metallic layers during the manufacturing of integrated circuits. The process comprises contacting a portion of the metallic surface to be etched with an effective amount of an etching agent comprising a .beta.-diketone or .beta.-ketoimine dispersed in an atmosphere capable of oxidizing the metal to be removed at a temperature sufficient to form a volatile metal-ligand complex. The volatile metal-ligand complex is sublimed from the surface thereby etching successive layers of the metal.
摘要:
This invention is a vapor-phase process for cleaning metal-containing contaminants from the surfaces of integrated circuits and semiconductors between the numerous fabricating steps required to manufacture the finished electronic devices. The process comprises contacting the surface to be cleaned with an effective amount of a cleaning agent comprising a carboxylic acid selected from acetic acid or formic acid at a temperature sufficient to form volatile metal-ligand complexes on the surface of the substrate to be cleaned. The volatile metal-ligand complexes are sublimed from the surface of the substrate providing a clean, substantially residue-free surface.
摘要:
This invention is a residue-free cleaning process for removing metal-containing contaminants from a surface of a substrate of the type used in manufacturing semi-conductor devices. The process comprises contacting the substrate with an effective amount of a cleaning agent comprising a .beta.-diketone or .beta.-ketoimine dispersed in an atmosphere capable of oxidizing the metal-contaminants at a temperature sufficient to form volatile metal-ligand complexes on the surface of the substrate. The volatile metal-ligand complexes are sublimed from the surface of the substrate leaving essentially no residue.
摘要:
A process for the vapor-phase synthesis of non-adduct volatile fluorinated and non-fluorinated metal-ligand complexes comprising contacting a .beta.-diketone or .beta.-ketoimine ligand with an inert carrier gas to vaporize the ligand, reacting the vaporized ligand with a metal species at a temperature sufficient to form the metal-ligand complex and recovering the metal-ligand complex by sublimation. The process is conducted in the absence of solvent thereby providing pure non-adduct metal-ligand complexes. Such complexes are particularly suited for specialty applications requiring use of high purity compounds.
摘要:
This invention is a vapor-phase process for cleaning metal-containing contaminants from the surfaces of integrated circuits and semiconductors between the numerous fabricating steps required to manufacture the finished electronic devices. The process employs cleaning agents comprising an effective amount of a partially halogenated or fully halogenated linear or branched carboxylic acid having from 2 to about 10 carbon atoms wherein the halogen is selected from fluorine or chlorine. The process comprises contacting the surface to be cleaned with an effective amount of the desired cleaning agent at a temperature sufficient to form volatile metal-ligand complexes on the surface of the substrate to be cleaned. The volatile metal-ligand complexes are sublimed from the surfaces of the substrate providing a clean, substantially residue-free surface.
摘要:
The present invention addresses the use of at least partially fluorinated organometallic compounds in reactive deposition applications. More specifically, the present invention addresses the use of the fluoroorganometallic compounds M(CF.sub.3).sub.3, or any M(C.sub.n F.sub.(2n+1)).sub.3-y H.sub.y compound where (y.ltoreq.2), M(CH.sub.2 CF.sub.3).sub.3 or any fluoroalkyl organometallics of the general formula M(C.sub.n H.sub.[(2n+1)-x] F.sub.x).sub.3-y H.sub.y, where y.ltoreq.2; x has a value 1.ltoreq.x.ltoreq.2n+1; and M=As, P, or Sb, in processes requiring deposition of the corresponding element. These uses include a number of different processes; the organometallic vapor phase epitaxy of compound semiconductor materials such as GaAs, InP, AlGaAs, InSb, etc. doping of SiO.sub.2 or borosilicate based glasses to enhance the reflow properties of the glass; in-situ n-type doping of silicon epitaxial material; sourcing of arsenic or phosphorus for ion implantation; chemical beam epitaxy and diffusion doping into electronic materials such as silicon dioxide, silicon and polycrystalline silicon. These types of materials generally have high volatilities, low toxicities, labile metal-ligand bonds, and stable decomposition products.Specifically, the use of tris-trifluoromethyl arsenic (AS(CF.sub.3) .sub.3) as a substitute for arsine in the manufacture of silicon integrated circuits, Group III-V compound semiconductors, optoelectronics and other electronic devices has been identified.
摘要:
The present invention addresses the use of at least partially fluorinated organometallic compounds in reactive deposition applications. More specifically, the present invention addresses the use of the fluoroorganometallic compounds M(CF.sub.3).sub.3, M(CF.sub.2 CF.sub.3).sub.3, or any M(C.sub.n F.sub.(2n+1)).sub.3-y H.sub.y compound where (y.ltoreq.2), M(CH.sub.2 CF.sub.3).sub.3 or any fluoroalkyl organometallics of the general formula M(C.sub.n H.sub.[(2n+1)-x] F.sub.x).sub.3-y H.sub.y, where y.ltoreq.2; x has a value 1.ltoreq.x.ltoreq.2n+1; and M=As, P, or Sb, in processes requiring deposition of the corresponding element. These uses include a number of different processes; the organometallic vapor phase epitaxy of compound semiconductor materials such as GaAs, InP, AlGaAs, InSb, etc.; doping of SiO.sub.2 or borosilicate based glasses to enhance the reflow properties of the glass; in-situ n-type doping of silicon epitaxial material; sourcing of arsenic or phosphorus for ion implantation; chemical beam epitaxy; and diffusion doping into electronic materials such as silicon dioxide, silicon and polycrystalline silicon. These types of materials generally have high volatilities, low toxicities, labile metal-ligand bonds, and stable decomposition products.Specifically, the use of tris-trifluoromethyl arsenic (As(CF.sub.3).sub.3) as a substitute for arsine in the manufacture of silicon integrated circuits, Group III-V compound semiconductors, optoelectronics and other electronic devices has been identified.
摘要:
This invention is a vapor-phase process for cleaning metal-containing contaminants from the surfaces of integrated circuits and semiconductors between the numerous fabricating steps required to manufacture the finished electronic devices. The process employs cleaning agents comprising an effective amount of hexamethyldisilazane. The process comprises contacting the surface to be cleaned with an effective amount of the desired cleaning agent at a temperature sufficient to form volatile metal-ligand complexes on the surface of the substrate to be cleaned. The volatile metal-ligand complexes are sublimed from the surfaces of the substrate providing a clean, substantially residue-free surface.
摘要:
The present invention addresses the use of metalorganic amines as metallic donor source compounds in reactive deposition applications. More specifically, the present invention addresses the use of the amino-substituted metallic donor source compounds M(NR.sub.2).sub.3-x H.sub.x, where R is organic, alkyl or fluoroalkyl, and x is less than or equal to 2, and M=As, Sb or P, in processes requiring deposition of the corresponding element. These uses include a number of different processes; the metalorganic vapor phase epitaxy of compound semiconductor material such as GaAs, InP, AlGaAs, etc.; doping of SiO.sub.2 or borosilicate based glasses to enhance the reflow properties of the glass; in-situ n-type doping of silicon epitaxial material; sourcing of arsenic or phosphorus for ion implantation; chemical beam epitaxy (or MOMBE); and diffusion doping into electronic materials such as silicon dioxide, silicon and polycrystalline silcon. These types of materials generally have high volatilities, low toxicities, labile metal-ligand bonds, and stable decomposition products.Specifically, the use of tris(dialkylamino) arsenic (As(NR.sub.2).sub.3) as a substitute for arsine in the manufacture of silicon integrated circuits, Group III-V compound semiconductors, optoelectronics and other electronic devices has been identified.
摘要:
The present invention is a method for the simultaneous codeposition of copper and aluminum from volatile copper and aluminum precursors to form a layer on a substrate under chemical vapor phase conditions, such as the metallization of an aluminum/(0.25-4% copper) layer on a silicon semiconductor electronic device.