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__TOC__
__TOC__


=Plasma Asher 1=
= Descum Comparison Table =
<span style="color:red">Plasma asher 1 was decommissioned 2024-12-02.</span>
{| class="wikitable"
 
[[Specific Process Knowledge/Lithography/Descum/PlasmaAsher1|Information about decommissioned tool can be found here.]]
 
=Plasma Asher 2=
<span style="color:red">Plasma asher 2 was decommissioned 2024-12-02.</span>
 
[[Specific Process Knowledge/Lithography/Descum/PlasmaAsher2|Information about decommissioned tool can be found here.]]
 
=Plasma Asher 3: Descum=
The user manual(s), quality control procedure(s) and results and contact information can be found in [http://labmanager.dtu.dk/function.php?module=Machine&view=view&mach=423 LabManager] - '''requires login'''
 
Plasma Asher 3 is specifically used for controlled descum process after lithography. Please note that you only can process a single 100 mm wafer, or one small sample, at a time.
The plasma asher is equipped with 2 gaslines: oxygen and nitrogen, but all standard processes use only oxygen (as recommended by Diener).
 
 
'''Ashing of  AZ MiR701 resist:'''<br>
You can use two different descum process developments: you can either change power settings or processing chamber pressure.
 
 
'''Testing different power settings:'''
[[image:AZMIR701_power_settings.png|640px|thumb|Descum results for different power settings]]
 
'''Recipe settings:'''
*O2 flow: 5 sccm
*N2 flow: 0
*Pressure: 0.2 mbar
*Power: Varied
 
 
'''Experiment parameters:'''
{| {{table}}
| align="center" |
{|border="1" cellspacing="1" cellpadding="10" style="text-align:left;"
|- style="background:LightGrey"
| ||FW/REV|| C2/C1 || Power
|-
|'''recipe 1''' || 50/0 || 52/31 || 50%
|-
|-
|'''recipe 2''' || 100/0 || 53/31 || 100%
!
! [[Specific_Process_Knowledge/Lithography/Descum/plasmaAsher03|Plasma Asher 3: Descum]]
! [[Specific_Process_Knowledge/Lithography/Descum/plasmaAsher04|Plasma Asher 4 (Clean)]]
! [[Specific_Process_Knowledge/Lithography/Descum/plasmaAsher05|Plasma Asher 5 (Dirty)]]
|-
|-
|'''recipe 3''' || 20/0 || 51/34 || 20%
! scope=row style="text-align: left;" | Purpose
| Resist descum
|
*Resist stripping
*Resist descum
|
*Resist stripping
*Resist descum
|-
|-
|}
! scope=row style="text-align: left;" | Method
|}
| Plasma ashing
<br clear="all" />
| Plasma ashing
 
| Plasma ashing
 
'''Testing different pressure settings:'''
[[image:AZMIR701_pressure_settings.png|640px|thumb|Descum results for different pressure settings]]
 
'''Recipe settings:'''
*O2 flow: varied
*N2 flow: 0
*Pressure: varied
*Power: V100% (100 W)
 
 
'''Experiment parameters:'''
{| {{table}}
| align="center" |
{|border="1" cellspacing="1" cellpadding="10" style="text-align:left;"  
|- style="background:LightGrey"
| ||FW/REV|| C2/C1 || Oxygen || Pressure
|-
|'''recipe 1'''|| 100/0 || 53/31 || 5 || 0,2
|-
|-
|'''recipe 2''' || 100/0 || 37/38 || 45 || 0,8
! scope=row style="text-align: left;" | Process gasses
| O<sub>2</sub> (50 sccm)
|
*O<sub>2</sub> (0-500 sccm)
*N<sub>2</sub> (0-500 sccm)
|
*O<sub>2</sub> (0-500 sccm)
*N<sub>2</sub> (0-500 sccm)
*CF<sub>4</sub> (0-200 sccm)
|-
|-
|}
! scope=row style="text-align: left;" | Process power
|}
| 10-100 W (10-100%)
<br clear="all" />
| 150-1000 W
 
| 150-1000 W
'''Ashing of AZ5214E resist:'''
[[image:AZ5214E_pressure_settings.png|640px|thumb|Descum results for different pressure settings]]
 
 
'''Recipe settings:'''
*O2 flow: varied
*N2 flow: 0
*Pressure: varied
*Power: V100% (100 W)
 
 
'''Experiment parameters:'''
{| {{table}}
| align="center" |
{|border="1" cellspacing="1" cellpadding="10" style="text-align:left;"  
|- style="background:LightGrey"
| ||FW/REV|| C2/C1 || Oxygen || Pressure
|-  
|'''recipe 1'''|| 100/0 || 53/31 || 17 || 0,4
|-
|-
|'''recipe 2''' || 100/0 || 37/39 || 45 || 0,8
! scope=row style="text-align: left;" | Substrate batch
|
*Chips: several
*50 mm wafer: several
*100 mm wafer: 1
|
*Chips: several
*50 mm wafer: several
*100 mm wafer: 1-25
*150 mm wafer: 1-25
*200 mm wafer: 1-25
|
*Chips: several
*50 mm wafer: several
*100 mm wafer: 1-25
*150 mm wafer: 1-25
*200 mm wafer: 1-25
|-
|-
! scope=row style="text-align: left;" | Substrate materials
|
*<span style="color:red">'''No polymer substrates'''</span><br>
*Silicon substrates
*III-V substrates
*Glass substrates
*Films, or patterned films, of any material except type IV (Pb, Te)
|
*<span style="color:red">'''No metals'''</span><br>
*<span style="color:red">'''No metal oxides'''</span><br>
*<span style="color:red">'''No III-V materials'''</span><br>
*Silicon substrates
*Glass substrates
*Polymer substrates
*Films, or patterned films, of resists/polymers
|
*Silicon substrates
*III-V substrates
*Glass substrates
*Polymer substrates
*Films, or patterned films, of any material except type IV (Pb, Te)
|}
|}
|}
<br clear="all" />


=Plasma Asher 4=
=Decommisioned tools=
==Descum processing in plasma asher 4 & 5==
<span style="color:red">Plasma asher 1 was decommissioned 2024-12-02.</span>
[[File:PA_descum_single_v1.png|400px|thumb|Ashing amount and ashing rate when processing a single 100 mm wafer.|right]]


[[File:PA_descum_multi_v1.png|400px|thumb|Ashing amount and ashing rate when processing multiple 100 mm wafers. Test measured on the center of 3 wafers.|right]]
[[Specific Process Knowledge/Lithography/Descum/PlasmaAsher1|Information about decommissioned tool can be found here.]]


The user manual, risk assessment, and contact information can be found in [http://labmanager.dtu.dk/function.php?module=Machine&view=view&mach=530 LabManager] - '''requires login'''


Descum of AZ 5214E on 100 mm wafers. The descum process was tested for single substrates, as well as 3 substrates, placed vertically in the glass boat. For the 3 substrates only the center substrate was used for testing, the front and back wafers were used as dummy wafers.
<span style="color:red">Plasma asher 2 was decommissioned 2024-12-02.</span>
 
{| class="wikitable"
|-
! Test setup !! Single substrate !! Center of 3 substrates
|-
! scope=row| Test results
| Ashing rate: 5.7 ±2.1 µm/min<br>Non-uniformity: 0.6 ±0.4% || Ashing rate: 3.8 ±1.6 µm/min<br>Non-uniformity: 0.4 ±0.2%
|-
! scope=row| Wafers
| 1 || 3
|-
! scope=row| Wafer size
| 100 mm || 100 mm
|-
! scope=row| Boat position
| Center of chamber || Center of chamber
|-
! scope=row| Test wafer position
| Center of boat || Center of boat
|-
! scope=row| Total gas flow rate
| 200 sccm || 200 sccm
|-
! scope=row| Gas mix ratio
| 50% N<sub>2</sub> || 50% N<sub>2</sub>
|-
! scope=row| Chamber pressure
| 1.3 mbar || 1.3 mbar
|-
! scope=row| Power
| 200 W || 200 W
|-
! scope=row| Test processing time
| Tested parameter || Tested parameter
|-
! scope=row| Test average temperature
| 33°C || 33°C
|}


[[Specific Process Knowledge/Lithography/Descum/PlasmaAsher2|Information about decommissioned tool can be found here.]]
<br clear="all" />
<br clear="all" />
=Plasma Asher 5=
<span style="color:red">Coming soon</span>

Latest revision as of 10:11, 25 June 2026

The content on this page, including all images and pictures, was created by DTU Nanolab staff, unless otherwise stated.

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Descum Comparison Table

Plasma Asher 3: Descum Plasma Asher 4 (Clean) Plasma Asher 5 (Dirty)
Purpose Resist descum
  • Resist stripping
  • Resist descum
  • Resist stripping
  • Resist descum
Method Plasma ashing Plasma ashing Plasma ashing
Process gasses O2 (50 sccm)
  • O2 (0-500 sccm)
  • N2 (0-500 sccm)
  • O2 (0-500 sccm)
  • N2 (0-500 sccm)
  • CF4 (0-200 sccm)
Process power 10-100 W (10-100%) 150-1000 W 150-1000 W
Substrate batch
  • Chips: several
  • 50 mm wafer: several
  • 100 mm wafer: 1
  • Chips: several
  • 50 mm wafer: several
  • 100 mm wafer: 1-25
  • 150 mm wafer: 1-25
  • 200 mm wafer: 1-25
  • Chips: several
  • 50 mm wafer: several
  • 100 mm wafer: 1-25
  • 150 mm wafer: 1-25
  • 200 mm wafer: 1-25
Substrate materials
  • No polymer substrates
  • Silicon substrates
  • III-V substrates
  • Glass substrates
  • Films, or patterned films, of any material except type IV (Pb, Te)
  • No metals
  • No metal oxides
  • No III-V materials
  • Silicon substrates
  • Glass substrates
  • Polymer substrates
  • Films, or patterned films, of resists/polymers
  • Silicon substrates
  • III-V substrates
  • Glass substrates
  • Polymer substrates
  • Films, or patterned films, of any material except type IV (Pb, Te)

Decommisioned tools

Plasma asher 1 was decommissioned 2024-12-02.

Information about decommissioned tool can be found here.


Plasma asher 2 was decommissioned 2024-12-02.

Information about decommissioned tool can be found here.

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