Short loop #2a: PSG drive out test short loop (quick check)
Step Process name Specification/Measurement results Equipment Comment Operator/Date
0.0 Wafer P-type, prime grade, 38-63 Ohm-cm   4 wafers horvath/09-18-03
1.0 Bulk resistivity measurement       horvath/09-18-03
1.1 Pre-clean Piranha clean and HF dip wafers Sink9    
1.2 Measure sheet resistance w#1: ~600 700 550 800 750 Ohm/sq 4ptprb Approximate values (high resistivity)  
w#2: ~1070 1000 1540 710 900  
w#3:~ 500 570 570 570 390  
w#4: ~470 600 700 600 500  
2.0 PSG deposition Recipe: 11SDLTOA, 12 min. dep. Time Tystar11   horvath/09-18-03
2.1 Measure PSG thickness w#1: 1764 1688 1672 1696 1675 A Nanoduv    
w#2: 1772 1677 1667 1687 1670    
w#3: 1762 1664 1663 1678 1656    
w#4: 1756 1600 1658 1675 1657    
3.0 Backside PSG etch     Necessary for accurate temperature set up during RTA horvath/09-18-03
3.1 Wafer coating Coat wafers with PR on front SVGCOAT6    
3.2 Hard bake Hard bake resist UVBAKE    
3.3 PSG etch 5/1 BHF dip wafers Sink7    
3.4 Resist strip Ash resist in O2 plasma Matrix    
3.5 Cleaning Std. Piranha clean MEMS and MOS clean Sink9    
4.0 RTA w#1 950C 10 sec Heatpulse3   horvath/09-19-03
w#2 950C 20 sec  
w#3 950C 30 sec  
w#4 950C 50 sec  
5.0 Bulk resistivity measurement       horvath/09-19-03
5.1 PSG etch Dip wafers into 25/1 HF Sink9    
5.2 Measure sheet resistance w#1 685 760 617 820 750 Ohm/sq 4ptprb    
w#2 510 460 435 488 480  
w#3 400 397 340 410 370  
w#4 340 340 320 340 320