Specific Process Knowledge/Etch/DRIE-Pegasus/Pegasus-4/Nitride Etch: Difference between revisions

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{| border="2" cellspacing="2" cellpadding="3"  
{| border="2" cellspacing="2" cellpadding="3"  
!Parameter
!Parameter
|Recipe name: '''Slow Etch'''
|Recipe name: '''SiO2_res_10'''
|Recipe name: '''Slow Etch2'''
|Recipe name: '''DOE2/Post_II_21'''
    
    
|-
|-
|Coil Power [W]
|Coil Power [W]
|350
|2500
|200
|200


|-
|-
|Platen Power [W]
|Platen Power [W]
|25
|300
|50
|50


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|-
|-
|H2 flow [sccm]
|H2 flow [sccm]
|25.6
|15
|15
|15
|-
|He flow [sccm]
|448.7
|0


|-
|-
|CF<sub>4</sub> flow [sccm]
|C<sub>4</sub>F<sub>8</sub> flow [sccm]
|30
|25.6
|30
|30


|-
|-
|Pressure [mTorr]
|Pressure [mTorr]
|3
|8.8
|10
|10


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{| border="2" cellspacing="2" cellpadding="3"
{| border="2" cellspacing="2" cellpadding="3"
!Typical results
!Typical results
!'''Slow Etch'''
!'''SiO2_res_10'''
!'''Slow Etch2'''
!'''DOE2/Post_II_21'''


|-
|-

Revision as of 11:30, 22 August 2023

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Etching of silicon rich nitride (SRN) with recipes developed for SiO2 etching

Parameter Recipe name: SiO2_res_10 Recipe name: DOE2/Post_II_21
Coil Power [W] 2500 200
Platen Power [W] 300 50
Platen temperature [oC] 20 20
H2 flow [sccm] 25.6 15
He flow [sccm] 448.7 0
C4F8 flow [sccm] 25.6 30
Pressure [mTorr] 8.8 10
Typical results SiO2_res_10 DOE2/Post_II_21
Etch of SRN ~43nm/min [measured 39-50 nm/min over a 6" wafer] 23-25 nm/min [4" on carrier]]
Etch rate of Si3N4 ~49 nm/min [4" on carrier] 24-26 nm/min [4" on carrier]
Etch rate of SiO2 ~42nm/min [41-43 nm/min over a 6" wafer] 13.7-14.7 nm/min [4" on carrier]
Etch rate in Si ñm/min 11-13 nm/min (10% load, 4" wafer on 6" carrier)
Etch rate of Mir resist ~nm/min ~17 nm/min
Tested etch time without burning the resist 3 min (6 min => resist burned) 30 min
Profile [o]