Methods and systems for stabilizing filaments in a chemical vapor deposition reactor
View Patent ↗In various embodiments, systems, methods, and apparatus are provided for stabilizing filaments in a chemical vapor deposition (CVD) reactor system. A system includes a base plate having a plurality of electrical connections, a pair of filaments extending from the base plate, and a stabilizer connecting the pair of filaments. Each filament is in electrical contact with, and defines a conductive path between, the two electrical connections. A method of stabilizing the filaments includes providing the pair of filaments, and connecting the pair of filaments with at least one stabilizer. The stabilizer may include an electrically insulating material.
1. A chemical vapor deposition reactor system comprising:
a base plate comprising a plurality of electrical connections;
a pair of filaments extending from the base plate, each filament comprising two vertical filament segments and a bridge, each of the vertical segments comprising a proximal end in electrical contact with one of the electrical connections and a distal end in electrical contact with the bridge, so that the vertical segments and bridge of each filament defines a conductive path between respective electrical connections; and
a stabilizer connecting the pair of filaments, said stabilizer comprising at least one electrically conductive support rod and at least one electrically insulating connector that prevents flow of electricity through the stabilizer during chemical vapor deposition.
2. The system of claim 1 , wherein the electrically insulating connector comprises at least one socket for receiving the at least one electrically conductive support rod.
3. The system of claim 1 , wherein the stabilizer comprises two outer electrically conductive support rods joined by a central electrically insulating connector.
4. The system of claim 3 , wherein at least one of the outer electrically conductive support rods comprises silicon.
5. The system of claim 3 , wherein the central electrically insulating connector comprises at least one of quartz or silicon nitride.
6. The system of claim 1 , wherein the stabilizer is adjustable in length.
7. The system of claim 1 , wherein the stabilizer is connected to the pair of filaments near the distal end of one of the vertical filament segments thereof.
8. The system of claim 1 , wherein the stabilizer is connected to at least one of the filaments at the bridge.
9. The system of claim 1 , wherein a stabilizer angle between the stabilizer and the bridge is selected from a range of about 20 degrees to about 160 degrees.
10. The system of claim 9 , wherein the stabilizer angle is selected from a range of about 80 degrees to about 100 degrees.
11. The system of claim 1 , wherein each filament is substantially U-shaped.
12. The system of claim 1 , wherein the stabilizer and the pair of filaments are arranged to define at least one of a ring or a partial ring.
13. The system of claim 12 , wherein the at least one ring or partial ring comprises more than two filaments and more than one stabilizer.
14. The system of claim 1 , further comprising a second pair of filaments and a second stabilizer connecting the second pair of filaments, wherein the pair of filaments is configured to operate at a first electrical phase, and the second pair of filaments is configured to operate at a second electrical phase.