Run Card for cmos150

 

Step 19.0

 

 

 

 

 

Process:  Sacrificial Oxide: target = 20 (+/- 2) nm

Date

Operator

 

 

 

 

1.

TCE clean furnace tube (tystar17)

11/27/01

vorosl

 

 

 

 

2.

Standard clean wafers in Sink9 (MEMS and MOS side).

Control wafers are involved (NCH, PCH).

10 min. piranha,

 

 

 

Dip in 25:1 HF until PCH and NCH dewet. It should take about 2 minutes.

 

 

 

Note: NCH should be handled separately since it has a thick oxide!

 

 

 

 

 

 

3.

Dry oxidation at 950 C (DRYOX.017)

11/28/01

vorosl

 

30 min. dry O2

20 min. N2 anneal

 

 

 

4.

Measure Tox on PCH and NCH. Tox [A]=

 

 

 

wafer

top

center

flat

left

right

PCH

231

227

231

225

231

NCH

202

205

218

209

206

#1

235

245

258

249

245