Step 39. LDD spacer formation

 

 

Step

 

Process

Date

Operator

 

39.1

 

 

TEOS oxide etch in Centura-MxP+:

Recipe: MXP_OXSP_ETCH_EP

Blank wafer etch rate:               3000 A/min  (78 s)

Patterned test wafer etch rate:   2900 A/min  (81.2 s)

Manual endpoint patterned test wafer

 

Preparing patterned test wafer for SEM cross sectioning:

      Deposit poly in Tystar10 10SUPLYA target 2500A

      Cross section poly test lines

      SEM image

 

Manual endpoint etch when endpoint signal drops. Etch time 77-81.5 sec.

No oxide could be measured on active area.

10/23/07

-

10/25/07

Pongracz