| 摘要 |
Methods and apparatus are provided for forming thin films for semiconductor devices, which enable supplying and removing reactants containing constituent elements of a thin film to be formed, by preheating and supplying a process gas and a purging gas at a predetermined temperature in forming the thin film on a substrate. For example, a method for forming a thin film includes supplying a first reactant to a chamber to chemically absorb the first reactant onto a substrate, the first reactant being bubbled by a first gas that is preheated, purging the chamber to remove residues on the substrate having the first reactant chemically absorbed, and forming the thin film by a means of chemical displacement by supplying a second reactant to the chamber to chemically absorb the second reactant onto the substrate.
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