Silicon Metals Bay

Varian Sputter
Location: 1.736

*****
*****
Description: Metal Deposition

*****Compatible Materials: Si / SiGe

*****Incompatible Materials: Photoresist / III-V

1. Log on to the tool using the LabAccess terminal.
2. Venting System

  • a) If system is in standby – Pump light is blinking
  • b) Turn on Liquid Nitrogen
    (flip switch up on the back of electronics cabinet)
  • c) Pull down standby lock in panel
  • d) Rotate knob to vent
  • e) Wait until system is vented"

3. Loading (Please make sure fill out the logbook)

  • a) Wear clean gloves
  • b) Make sure wafers have undergone a cleaning
    process prior to load in to sputter system
  • c) Unload planet and close door to
    maintain system integrity
  • d) Slip wafers in well
  • e) Replace planet and spin to ensure wafers
    remain in place
  • f) Rotate knob to pump and push in and up on the
    door until system begins pumping down
  • g) Wait several hours until system is at < 5x10-7 Torr"
4. Deposition (Turn on)
  • a) Turn valves on in access corridor (3 black valves and Ar valve)
  • b) Turn fixture drive to manual
  • c) Slowly increase drive knob to 90%
  • d) Turn on Micro-Controller (Pressure Gauge)
  • e) Orifice – Turn from max to control
  • f) Backfill 2 Turn on
  • g) Micro-controller should read 3E-3 Torr (3 mTorr), adjust knob on system slightly if pressure needs to be adjusted
  • h) Turn on 3 power supplies (voltage and current) in utility corridor
  • i) Make sure all 3 lights for electron guns are on
  • j) Turn all 3 guns on
  • k) Increase Control of 3 guns to 48%
  • l) Make sure targets are on A-1, B-2, C-3
  • m) Wait several minutes to start sputter
  • n) Open shutters A-1, B-2, C-3

5. After Deposition (Turn off)

  • a) Close shutters
  • b) Turn gun currents down
  • c) Switch guns off
  • d) Turn Backfill 2 off
  • e) Turn Orifice to Maximum
  • f) Reduce Fixture Drive
  • g) Switch Fixture Drive to Auto
  • h) Turn off Power Supplies and 3 black valves before venting system
  • I) Vent

6. Standby

  • a) After pumping chamber down, wait _ hour to switch system to standby
  • b) Turn off liquid nitrogen (switch back of electronics cabinet to middle position)

7. Log off of the tool using the LabAccess terminal.