Standard Operating Procedure of 

Oxford Plasma Lab 100 PECVD

Updated on 3/26/2018

Contents

1 Ensure Oxford Software interface is running

2 Ensure log in to the system

3 Ensure the process chamber was properly cleaned

4 Vent the loadlock

5 Load the sample

6 Pump-down the loadlock

7 Load a recipe

8 Edit/review a recipe

9 Run a recipe

10 Unload sample from loadlock

11 Run Chamber Clean

12 Supplemental Documents

Important Usage Notes:

1. Ensure Oxford Software interface is running

2. Ensure log in to the system

1. Click "System" in the menu bar at the top of the screen.

2. Select "Password" in the pull-down menu.

3. The following dialog box appears.


4. Click "OK" IF Current User and Access Level show "user" and "user", respectively, in the upper box in the access control window, and go to section 4, "Vent the loadlock". If not, go to the next step.

5. Enter "user" into both "Name" and "Password" fields in the lower box of the access control window, then click "verify".

6. Ensure that Current User and Access Level show "user" and "user", respectively, in upper box in the access control window. Then, click "OK".

3. Ensure the porcess chamber is properly cleaned

1. Select Log View from the drop-down Process Menu.

2. The following screen appears.

Note: Make sure that you check the system log files to verify the current condition of the chamber before starting your deposition process.

3. You will want to click on the bottom down arrow to get to the most recent activity or you can select by date.

4. You will want to make sure that the duration of the final chamber clean from the previous user is equal to the total deposition time plus 15 minutes. 

5. (a) Close the Load Lock lid, (b) click "Evacuate", (c) enter a name for the clean “PennKey – clean [time]”, and (d) click “OK”.

6. Select the "Chamber Clean" recipe.

7. You can deposit up to 5 microns before a chamber clean is necessary.

4. Vent the loadlock

The loadlock pump display

  1. Click "stop", and then "vent" in the loadlock pump display on the lower left of the pump control screen (the default screen).
  2. The loadlock display will change as follows:
    1. "vent prepump before purging"
    2. "purging loadlock before venting"
    3. "venting loadlock"
    4. "loadlock finished venting"

5. Load the sample

  1. Open the loadlock lid, lifting it by its black knob. Note: Loadlock interior will be HOT.
  2. Using wafer tongs or a gloved hand, grab the sample wafer or carrier wafer by its edges and carefully place it on the wafer transfer arm with the wafer's flat flush against the 2 wafer stops.
  3. Close loadlock lid.

6. Pump-down the loadlock

1. Click "stop", and then "evacuate" in the loadlock pump display.

2. The "load wafer or pump loadlock" window appears.

Note: IF YOU CLICK "CANCEL", THE TOOL WILL ASSUME THE LOADLOCK IS EMPTY AND WILL NOT RUN RECIPES (it will only evacuate the loadlock).

3. Enter the following into the box.

“PennKey” – “film” “time”

NOTE: Your PennKey is the name you use when logging into IRIS, not your PENN ID#.  The purpose is to have your name appear in the process log file not just a number.

 

For example,

PennKey – Test SiO2 15 min

OR

PennKey – clean 25 min

7. Load a recipe

1. Select Recipes from the drop-down Process Menu.

2. The following screen appears.

3. On the recipe screen, click "load". If a recipe is already loaded, the loaded window will ask "overwrite current recipe (name)?"

4. If loading a new recipe, select the appropriate one from the recipe popup window & click "OK" (See the recipe parameter summary in PECVD recipes). The recipe name will appear near the top of the screen with a list of its step in the left hand column below.

5. If no edits need to be made to the recipe's time settings, go to section 9, "Run a recipe".

8. Edit/review a recipe

‎ ‎ 1. To edit/review the given step in the recipe, click on the step and select "Edit Step" from the drop-down menu.

2. Enter the desired time (HH:MM:SS) in the process step editor window.

3. Click "OK". (The program will return to the recipe screen.)

9. Run a recipe

1. Click "run" to start the current recipe in the recipe screen. The program will automatically return to the "process control" screen, the wafer will be loaded into the process chamber & processed, then unloaded to the loadlock.

2. When the process completes and the wafer is returned to the load lock, the software will return to the "Pump Control" screen and a "Process Status" dialog box indicating "Process Completed OK" will appear. 

3. Click OK.

4. Now click "Accept" in the "Yellow Alert" window indicating "End of process reached".

 

 

 

10. Unload sample from loadlock

1. Vent the loadlock, as shown in section 3.

2. Once the loadlock pump display shows "loadlock finished venting", you may open the loadlock to remove your wafer/carrier wafer with sample piece(s).

3. To process another sample, repeat steps 4-8.

4. If the process is done, close the loadlock lid and go to the next step.

11. Run Chamber Clean

1. Pump down the load lock, and follow the naming convention from section 5. 

2. Select the Chamber Clean recipe, and remember total clean time is equal to your total deposition time plus 15 min.

3. When the Chamber Clean finishes, leave the load lock under vacuum.

IMPORTANT: Do not log out of the tool through IRIS before the cleaning recipe has finished running. Logging out prematurely will engage the tool interlock and stop the process gas flow, causing a RED ALERT on the tool. This will leave the tool in an unusable state for the next researcher, until the alert can be addressed by Staff, and the next user will need to perform a chamber clean before they can process their samples.

 

11. Supplemental Documents

Revisions:

3/26/18, by Keenan: Moved “notes” section to top of document, moved/retitled section regarding review of previous chamber cleaning, added note regarding premature log-out through IRIS

10/6/15, by Metzler, change made to required chamber clean time - it is now total deposition time PLUS 15 minutes

10/6/15, by Metzler, added note for naming convention to use PennKey (name used for logging into IRIS) and not Penn ID number