摘要:
Novel Sr and Ba complexes containing both beta-diketonates and N-methyl-pyrrolidone were synthesized and characterized. TGA experiments indicated these complexes are volatile, they can be employed as precursors for ALD strontium titanate (STO) or barium strontium titanate films (BST) films in semiconductor fabrication.
摘要:
Volatile metal amidate metal complexes are exemplified by bis(N-(tert-butyl)ethylamidate)bis(ethylmethylamido) titanium; (N-(tert-butyl)(tert-butyl)amidate)tris(ethylmethylamido) titanium; bis(N-(tert-butyl)(tert-butyl)amidate)bis(dimethylamido) titanium and (N-(tert-butyl)(tert-butyl)amidate)tris(dimethylamido) titanium. The term “volatile” referes to any precursor of this invention having vapor pressure above 0.5 torr at temperature less than 200° C. Metal-containing film depositions using these metal amidate ligands are also described.
摘要:
Embodiments of the current invention include methods of forming a strontium titanate (SrTiO3) film using atomic layer deposition (ALD). More particularly, the method includes forming a plurality of titanium oxide (TiO2) unit films using ALD and forming a plurality of strontium oxide (SrO) unit films using ALD. The combined thickness of the TiO2 and SrO unit films is less than approximately 5 angstroms. The TiO2 and SrO units films are then annealed to form a strontium titanate layer.
摘要:
The present invention is directed to high coordination sphere Group 2 metal β-diketiminate compositions, such as bis(N-(2,2-methoxyethyl)-4-(2,2-methoxyethylimino)-2-penten-2-aminato) barium; and the deposition of the metals of such metal ligand compositions by chemical vapor deposition, pulsed chemical vapor deposition, molecular layer deposition or atomic layer deposition to produce Group 2 metal containing films, such as barium strontium titanate films or strontium titanate films or barium doped lanthanate as high k materials for electronic device manufacturing.
摘要:
A composition selected from the group consisting of bis(tert-butoxy)(isopropoxy)silanol, bis(isopropoxy)(tert-butoxy)silanol, bis(tert-pentoxy)(isopropoxy)silanol, bis(isopropoxy)(tert-pentoxy)silanol, bis(tert-pentoxy)(tert-butoxy)silanol, bis(tert-butoxy)(tert-pentoxy)silanol and mixtures thereof; its use to form a metal or metalloid silicate layer on a substrate and the synthesis of the mixed alkoxysilanols.
摘要:
The present invention is a bubbler having a diptube inlet ending in a bubble size reducing outlet and at least one baffle disc positioned between the outlet of the diptube and the outlet of the bubbler to provide a narrow annular space between the baffle disc and the wall of the bubbler to prevent liquid droplets from entering the outlet to the bubbler. The bubble size reducing outlet is an elongated cylindrical porous metal frit situated in a sump of approximately the same dimensions. A metal frit is placed at the inlet of the outlet of the bubbler. The present invention is also a process of delivering a chemical precursor from a bubbler vessel having the above structure.
摘要:
Volatile metal amidate metal complexes are exemplified by bis(N-(tert-butyl)ethylamidate)bis(ethylmethylamido) titanium; (N-(tert-butyl)(tert-butyl)amidate)tris(ethylmethylamido) titanium; bis(N-(tert-butyl)(tert-butyl)amidate)bis(dimethylamido) titanium and (N-(tert-butyl)(tert-butyl)amidate)tris(dimethylamido) titanium. The term “volatile” refers to any precursor of this invention having vapor pressure above 0.5 torr at temperature less than 200° C. Metal-containing film depositions using these metal amidate ligands are also described.
摘要:
Metal imidazolate complexes are described where imidazoles ligands functionalized with bulky groups and their anionic counterpart, i.e., imidazolates are described. Compounds comprising one or more such polyalkylated imidazolate anions coordinated to a metal or more than one metal, selected from the group consisting of alkali metals, transition metals, lanthanide metals, actinide metals, main group metals, including the chalcogenides, are contemplated. Alternatively, multiple different imidazole anions, in addition to other different anions, can be coordinated to metals to make new complexes. The synthesis of novel compounds and their use to form thin metal containing films is also contemplated.
摘要:
Metal imidazolate complexes are described where imidazoles ligands functionalized with bulky groups and their anionic counterpart, i.e., imidazolates are described. Compounds comprising one or more such polyalkylated imidazolate anions coordinated to a metal or more than one metal, selected from the group consisting of alkali metals, transition metals, lanthanide metals, actinide metals, main group metals, including the chalcogenides, are contemplated. Alternatively, multiple different imidazole anions, in addition to other different anions, can be coordinated to metals to make new complexes. The synthesis of novel compounds and their use to form thin metal containing films is also contemplated.
摘要:
The present invention is related to a family of liquid group 4 precursors represented by the formula: (pyr*)M(OR1)(OR2)(OR3) wherein pyr* is an alkyl substituted pyrrolyl, wherein M is group 4 metals include Ti, Zr, and Hf; wherein R1-3 can be same or different and selected from group consisting of linear or branched C1-6 alkyls; preferably C1-3 alkyls; R4 is selected from the group consisting of C1-6 alkyls, preferably branched C3-5 alkyls substituted at 2, 5 positions to prevent the pyrrolyl coordinated to the metal center in η1 fashion; n=2, 3, 4. Most preferably the invention is directed to (2,5-di-tert-butylpyrrolyl)(tris(ethoxy)titanium, (2,5-di-tert-amylpyrrolyl)(tris(ethoxy)titanium, and (2,5-di-tert-amylpyrrolyl)(tris(iso-propoxy)titanium. The invention is also directed to (cyclopentadienyl)(2,5-di-methylpyrrolyl)(bis(ethoxy))titanium. Deposition methods using these compounds are also contemplated.