Substrate processing apparatus, method of manufacturing semiconductor device and non-transitory computer-readable recording medium

1. A substrate processing apparatus comprising:

a process chamber configured to accommodate a substrate;

a substrate mounting unit installed in the process chamber and configured to have the substrate placed thereon, the substrate mounting unit comprising a choke groove disposed on a side surface thereof; and

a microwave supply unit configured to supply microwaves to the substrate placed on the substrate mounting unit,

wherein the microwave supply unit includes a microwave generator, a waveguide and a waveguide opening, the waveguide opening communicating with an inside of the process chamber, and

wherein the choke groove comprises an upper inner surface and a lower inner surface facing each other, the upper inner surface and the lower inner surface are disposed along an outer circumferential direction of the substrate mounting unit and a depth of the choke groove from the side surface of the substrate mounting unit is equal to or less than one fourth of a wavelength of the microwaves supplied by the microwave supply unit.

2. The substrate processing apparatus of claim 1 , further comprising a wafer loading port installed on a sidewall of the process chamber, and

wherein the choke groove is positioned between the substrate placed on the substrate mounting unit and the wafer loading port.

3. The substrate processing apparatus of claim 1 , further comprising:

a wafer loading port installed on a sidewall of the process chamber; and

a second choke groove disposed in an inner wall of the process chamber between the substrate placed on the substrate mounting unit and the wafer loading port.

4. The substrate processing apparatus of claim 3 , wherein the second choke groove does not face the choke groove disposed on the side surface of the substrate mounting unit.

5. The substrate processing apparatus of claim 1 , wherein the choke groove disposed on the side surface of the substrate mounting unit is filled with a dielectric material.

6. The substrate processing apparatus of claim 1 , wherein the choke groove is disposed along an entire side surface of the substrate mounting unit.

7. The substrate processing apparatus of claim 3 , further comprising: a shutter configured to seal the wafer loading port; and a third choke groove disposed in the shutter.

8. The substrate processing apparatus of claim 7 , further comprising a sealing member installed in the shutter.

9. The substrate processing apparatus of claim 1 , further comprising:

an elevation mechanism configured to move the substrate mounting unit up and down; and

a control unit configured to control the elevation mechanism to move the substrate mounting unit up and down.

10. A method of manufacturing a semiconductor device, comprising:

(a) loading a substrate into a process chamber through a wafer loading port;

(b) placing the substrate on a substrate mounting unit having a choke groove disposed on a side surface thereof;

(c) moving the substrate mounting unit upward such that the choke groove is positioned higher than the wafer loading port; and

(d) radiating microwaves generated by a microwave generator to the substrate via a waveguide and then through a waveguide opening communicating with an inside of the process chamber, and

wherein the choke groove comprises an upper inner surface and a lower inner surface facing each other, the upper inner surface and the lower inner surface are disposed along an outer circumferential direction of the substrate mounting unit and a depth of the choke groove from the side surface of the substrate mounting unit is equal to or less than one fourth of a wavelength of the microwaves generated by the microwave generator.

11. The method of claim 10 , wherein the process chamber comprises a second choke groove disposed in an inner wall of the process chamber above the wafer loading port, and

wherein, in (c), the substrate mounting unit is moved upward such that the substrate on the substrate mounting unit is positioned higher than the second choke groove.

12. The method of claim 11 , wherein, in (c), the substrate mounting unit is moved upward such that the choke groove disposed on the side surface of the substrate mounting unit does not face the second choke groove.

13. A non-transitory computer-readable recording medium causing a computer to perform:

(a) loading a substrate into a process chamber through a wafer loading port;

(b) placing the substrate on a substrate mounting unit having a choke groove disposed on a side surface thereof;

(c) moving the substrate mounting unit upward such that the choke groove is positioned higher than the wafer loading port; and

(d) radiating microwaves generated by a microwave generator to the substrate via a waveguide and then through a waveguide opening communicating with an inside of the process chamber, and

wherein the choke groove comprises an upper inner surface and a lower inner surface facing each other, the upper inner surface and the lower inner surface are disposed along an outer circumferential direction of the substrate mounting unit and a depth of the choke groove from the side surface of the substrate mounting unit is equal to or less than one fourth of a wavelength of the microwaves generated by the microwave generator.

14. The recording medium of claim 13 , wherein the process chamber comprises a second choke groove disposed in an inner wall of the process chamber above the wafer loading port, and

wherein, in (c), the substrate mounting unit is moved upward such that the substrate on the substrate mounting unit is positioned higher than the second choke groove.

15. The recording medium of claim 14 , wherein, in (c), the substrate mounting unit is moved upward such that the choke groove disposed on the side surface of the substrate mounting unit does not face the second choke groove.