Method of manufacturing semiconductor device, substrate processing apparatus, substrate processing system and non-transitory computer-readable recording medium
View Patent ↗A method of manufacturing a semiconductor device includes forming a thin film having excellent etching resistance and a low dielectric constant on a substrate, removing first impurities containing H 2 O and Cl from the thin film by heating the thin film at a first temperature higher than a temperature of the substrate in the forming of the thin film, and removing second impurities containing a hydrocarbon compound (C x H y -based impurities) from the thin film in which heat treatment is performed at the first temperature by heating the thin film at a second temperature equal to or higher than the first temperature.
1. A method of manufacturing a semiconductor device, comprising:
(a) forming a thin film on a substrate;
(b) removing a first impurity containing H 2 O and chlorine from the thin film by heating the thin film at a first temperature higher than a temperature of the substrate in (a); and
(c) removing a second impurity containing a hydrocarbon compound from the thin film by heating the thin film at a second temperature higher than the first temperature after performing (b),
wherein the temperature of the substrate in (a) ranges from a room temperature to 150° C.
2. The method of claim 1 , wherein (b) comprises at least a portion of a period of raising a temperature of the substrate to the first temperature.
3. The method of claim 1 , wherein (b) comprises a period of maintaining a temperature of the substrate at the first temperature.
4. The method of claim 1 , wherein (c) comprises at least a portion of a period of raising a temperature of the substrate to the second temperature.
5. The method of claim 1 , wherein (c) comprises a period of maintaining a temperature of the substrate at the second temperature.
6. The method of claim 1 , wherein (c) comprises at least a portion of a period of lowering a temperature of the substrate from the second temperature.
7. The method of claim 1 , wherein the first temperature is set such that the thin film is not oxidized by the first impurity in (b).
8. The method of claim 1 , wherein the first temperature is set such that the first impurity does not react with other impurities contained in the thin film in (b).
9. The method of claim 1 , wherein the first temperature is set such that the first impurity does not react with the second impurity contained in the thin film in (b).
10. The method of claim 1 , wherein the first temperature ranges from 300° C. to 450° C.
11. The method of claim 1 , wherein the second temperature is higher than 300° C. and equal to or lower than 900° C.
12. The method of claim 1 , wherein the thin film comprises a predetermined element, oxygen and carbon.
13. The method of claim 12 , wherein (a) comprises performing a cycle a predetermined number of times, the cycle comprising:
(a-1) supplying to the substrate a source gas containing the predetermined element, carbon and a halogen element and having a chemical bond between the predetermined element and the carbon;
(a-2) supplying an oxidizing gas to the substrate; and
(a-3) supplying a catalyst gas to the substrate.
14. A method of manufacturing a semiconductor device, comprising:
(a) forming a thin film on a substrate;
(b) removing a first impurity containing H 2 O and chlorine from the thin film by heating the thin film at a first temperature higher than a temperature of the substrate in (a); and
(c) removing a second impurity containing a hydrocarbon compound from the thin film by heating the thin film at a second temperature equal to or higher than the first temperature after performing (b),
wherein the temperature of the substrate in (a) ranges from a room temperature to 150° C., and
wherein (b) and (c) are performed under an oxygen-free atmosphere by supplying an oxygen-free gas to the substrate.
15. A non-transitory computer-readable recording medium storing a program that causes a computer to execute:
(a) forming a thin film on a substrate in a processing chamber;
(b) removing a first impurity containing H 2 O and chlorine from the thin film by heating the thin film at a first temperature higher than a temperature of the substrate in (a); and
(c) removing a second impurity containing a hydrocarbon compound from the thin film by heating the thin film at a second temperature higher than the first temperature after performing (b),
wherein the temperature of the substrate in (a) ranges from a room temperature to 150° C.
16. A non-transitory computer-readable recording medium storing a program that causes a computer to execute:
(a) forming a thin film on a substrate in a processing chamber;
(b) removing a first impurity containing H 2 O and chlorine from the thin film by heating the thin film at a first temperature higher than a temperature of the substrate in (a); and
(c) removing a second impurity containing a hydrocarbon compound from the thin film by heating the thin film at a second temperature equal to or higher than the first temperature after performing (b),
wherein the temperature of the substrate in (a) ranges from a room temperature to 150° C., and
wherein (b) and (c) are performed under an oxygen-free atmosphere by supplying an oxygen-free gas to the substrate.