Chemical vapor deposition method using alcohol for forming metal oxide thin film
First Claim
1. A method for fabricating a titanium oxide thin film, comprising:
- introducing a first reactant containing a titanium metal-organic complex with at least one diketone ligand selected from the group consisting of Ti(mpd)(thd)2 and Ti(thd)2(OiPr)2 into a reaction chamber including a substrate;
introducing a second reactant containing alcohol; and
wherein the titanium oxide in the anatase phase is generated by a chemical reaction between the first reactant and the second reactant and is deposited on the surface of the substrate as a thin film.
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Abstract
Provided is a method for fabricating a metal oxide thin film in which a metal oxide generated by a chemical reaction between a first reactant and a second reactant is deposited on the surface of a substrate as a thin film. The method involves introducing a first reactant containing a metal-organic compound into a reaction chamber including a substrate; and introducing a second reactant containing alcohol. Direct oxidation of a substrate or a deposition surface is suppressed by a reactant gas during the deposition process, as it uses alcohol vapor including no radical oxygen as a reactant gas for the deposition of a thin film. Also, since the thin film is deposited by the thermal decomposition, which is caused by the chemical reaction between the alcohol vapor and a precursor, the deposition rate is fast. Particularly, the deposition rate is also fast when a metal-organic complex with β-diketone ligands is used as a precursor. Further, a thin film with low leakage current can be obtained as the metal oxide thin film fabrication method using a chemical vapor deposition or atomic layer deposition method grows a thin film with fine microstructure.
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Citations
9 Claims
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1. A method for fabricating a titanium oxide thin film, comprising:
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introducing a first reactant containing a titanium metal-organic complex with at least one diketone ligand selected from the group consisting of Ti(mpd)(thd)2 and Ti(thd)2(OiPr)2 into a reaction chamber including a substrate; introducing a second reactant containing alcohol; and wherein the titanium oxide in the anatase phase is generated by a chemical reaction between the first reactant and the second reactant and is deposited on the surface of the substrate as a thin film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification