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== Nickel deposition ==
== Nickel deposition ==
Nickel can be deposited by e-beam evaporation. In the chart below you can compare the different deposition equipment.
Nickel can be deposited by e-beam evaporation or sputtering at DTU Nanolab. For electroplating you will have to contact other institutes at DTU, e.g., DTU Mechanical Engineering.  


*[[/Electroplating of nickel|Electroplating of nickel]]
Some process information is available here for e-beam evaporated films:
<!--*[[/Electroplating of nickel|Electroplating of nickel]]-->
*[[/Stress Wordentec Ni films|Stress in e-beam evaporated Ni films: study here]] ''(from the now decommissioned Wordentec deposition tool - basic trends in results should be transferable to other e-beam evaporators).''


In the chart below you can compare the different deposition equipment:


{| border="1" cellspacing="0" cellpadding="4"  
{| border="1" cellspacing="0" cellpadding="3"
|-style="background:silver; color:black"
!  
!  
! E-beam evaporation ([[Specific Process Knowledge/Thin film deposition/Alcatel|Alcatel]])
! E-beam evaporation ([[Specific Process Knowledge/Thin film deposition/Temescal|E-beam evaporator (Temescal)]] and [[Specific Process Knowledge/Thin film deposition/10-pocket e-beam evaporator|E-beam evaporator (10-pockets)]])
! E-beam evaporation ([[Specific Process Knowledge/Thin film deposition/Wordentec|Wordentec]])
! Sputter deposition ([[Specific Process Knowledge/Thin film deposition/Lesker|Lesker]])
! E-beam evaporation ([[Specific Process Knowledge/Thin film deposition/Multisource PVD|PVD co-sputter/evaporation]])
! Sputter deposition ([[Specific Process Knowledge/Thin film deposition/Cluster-based multi-chamber high vacuum sputtering deposition system|Sputter-system Metal-Oxide (PC1) and Sputter-system Metal-Nitride (PC3)]])
! Electroplating ([[Specific Process Knowledge/Thin film deposition/Electroplating-Ni|Electroplating-Ni]])
|-  
|-  
| Batch size
 
|-style="background:WhiteSmoke; color:black"
 
! General description
|E-beam deposition of Nickel
|Sputter deposition of Nickel
|Sputter deposition of Nickel
|-
 
 
|-style="background:LightGrey; color:black"
! Pre-clean
|Ar ion etch (only in E-beam evaporator Temescal)
|
|
*Up to 1x4" wafers
|RF Ar clean
*smaller pieces
|-
|-style="background:WhiteSmoke; color:black"
 
! Layer thickness
|10 Å to 1 µm *
|10 Å to 500 nm **
|10 Å to 500 nm **
|-
|-style="background:LightGrey; color:black"
 
! Deposition rate
|1-10 Å/s
|Depends on process parameters, about 1 Å/s
|Depends on process parameters, at least ~ 4 Å/s, see conditions [[Specific_Process_Knowledge/Thin_film_deposition/Cluster-based_multi-chamber_high_vacuum_sputtering_deposition_system#Standard_recipe_performance|here]]
 
|-style="background:WhiteSmoke; color:black"
 
! Batch size
|
|
*24x2" wafers or
*Up to 4x6" wafers
*6x4" wafers or
*Up to 3x8" wafers (ask for holder)
*6x6" wafers
*Many smaller pieces
|
|
*12x2" wafers or
* Pieces or
*12x4" wafers or
* 1x4" wafer or
*4x6" wafers
* 1x6" wafer
|
|
*1x2" wafer or
*Up to 10x4" or 6" wafers
*1x4" wafer or
*Many smaller pieces
*1x6" wafer


|-
|-
| Pre-clean
|RF Ar clean
|RF Ar clean
|RF Ar clean
|None


|-
|-style="background:LightGrey; color:black"
| Layer thickness
!Allowed materials
|10Å to 1µm
 
|10Å to 1 µm
|
|10Å to 1000 Å
*Almost any that does not degas at your intended substrate temperature. See also the [https://labmanager.dtu.dk/function.php?module=XcMachineaction&view=edit&MachID=429 cross-contamination sheet]
|A few µm to 1400 µm
|
* Almost any that do not degas. See also the [https://labmanager.dtu.dk/function.php?module=XcMachineaction&view=edit&MachID=244 cross-contamination sheet]
|
*Almost any that does not degas at your intended substrate temperature. See cross contamination sheets for [https://labmanager.dtu.dk/function.php?module=XcMachineaction&view=edit&MachID=441 PC1] and [https://labmanager.dtu.dk/function.php?module=XcMachineaction&view=edit&MachID=442 PC3]


|-
| Deposition rate
|2Å/s to 15Å/s
|10Å/s to 15Å/s
|About 1Å/s
|About 10 to 250 Å/s
|-
|-
|-
|-
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|
|
|
|
|Only very thin layers (up to 100nm).
*May use high-strength magnet for deposition.
|Sample must be compatible with plating bath. Seed metal necessary.
|
*May use high-strength magnet for deposition
|-
 
|}
 
'''*''' ''To deposit a cumulative thickness above 600 nm permission is required from metal@nanolab.dtu.dk to ensure enough material is present in the machine''
 
 
'''**''' ''To deposit a cumulative thickness above 200 nm permission is required from metal@nanolab.dtu.dk to ensure enough material is present in the machine''
 
==Quality control of e-beam evaporated Ni films==
{| border="1" cellspacing="2" cellpadding="2" colspan="3"
|bgcolor="#98FB98" |'''Quality control (QC) for the E-beam Evaporator (Temescal) and the E-beam Evaporator (10-pockets)'''
|-
|
Nickel deposition is tested occasionally, around 1 time per year in each machine. You are welcome to contact staff to request an extra test of the material.
 
'''LabManager links to procedures and data''' (require login):
 
*[http://labmanager.dtu.dk/d4Show.php?id=5862&mach=429 QC procedure for the E-beam Evaporator (Temescal)]<br>
*[https://labmanager.dtu.dk/view_binary.php?type=data&mach=429 The newest QC data for the E-beam Evaporator (Temescal)]<br>
 
*[http://labmanager.dtu.dk/d4Show.php?id=5862&mach=511 QC procedure for the E-beam Evaporator (10-pockets)]<br>
*[https://labmanager.dtu.dk/view_binary.php?type=data&mach=511 The newest QC data for the E-beam Evaporator (10-pockets)]<br>
 
 
{| {{table}}
| align="left" valign="top"|
{| border="2" cellspacing="1" cellpadding="2" align="left" style="width:400px"
! QC Recipe:
! Standard recipes/Ni
|-
|Deposition rate
|2 Å/s
|-
|Thickness
|100 nm
|-
|Pressure
|Below 1*10<sup>-6</sup> mbar
|-
|}
|-
|}
 
 
{| {{table}}
| align="left" valign="top"|
{| border="2" cellspacing="1" cellpadding="2" align="left" style="width:400px"
!QC limits
!Both E-beam Evaporators
|-
|Deposition rate deviation
|± 20 %
|-
|Measured average thickness
|± 10 %
|-
|Thickness deviation across a 4" wafer
|± 5 %
|-
|}
|-
|-
|}


Thickness is measured in 5 points with a stylus profiler (usually DektakXT). <br>
|}
|}