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Specific Process Knowledge/Thin film deposition/Deposition of Molybdenum: Difference between revisions

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! Pre-clean
! Pre-clean
|Ar ion source
|Ar ion source
|RF Ar clean
|
|RF Ar clean
|RF Ar clean
|-
|-
|-style="background:WhiteSmoke; color:black"
|-style="background:WhiteSmoke; color:black"
! Layer thickness
! Layer thickness
|10Å to 0.2 µm*
|10Å to 600 nm *
|10Å to 500 Å
|10Å to 500 Å
|10Å to ? ''discuss with staff''
|10Å to at least 100 nm (discuss with staff)
|-
|-
|-style="background:LightGrey; color:black"
|-style="background:LightGrey; color:black"
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'''*'''  ''Depending on the amount of heating during Mo deposition, which we will discover during process development.''
'''*'''  ''Please send a request to us if you wish to deposit more than 600 nm (write to metal@nanolab.dtu.dk)''

Revision as of 15:21, 20 June 2025

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Molybdenum deposition

Molybdenum can be deposited by e-beam evaporation or sputtering. In the chart below you can compare the different deposition equipment.

E-beam evaporation (Temescal) Sputter deposition (Lesker) Sputter deposition (Sputter-system Metal-Oxide (PC1) and Sputter-system Metal-Nitride (PC3))
General description E-beam deposition of Mo

(line-of-sight deposition)

Sputter deposition of Mo

(not line-of-sight)

Sputter deposition of Mo

(not line-of-sight)

Pre-clean Ar ion source RF Ar clean
Layer thickness 10Å to 600 nm * 10Å to 500 Å 10Å to at least 100 nm (discuss with staff)
Deposition rate 1Å/s to 10Å/s Depends on process parameters, roughly about 1 Å/s Not known yet, probably similar to 'old' Lesker sputter system
Batch size
  • Up to 4x6" wafers
  • Up to 3x8" wafers (ask for holder)
  • Many smaller pieces
  • Pieces or
  • 1x4" wafer or
  • 1x6" wafer
  • Up to 10x4" or 6" wafers
  • Many smaller pieces
Allowed materials
  • Silicon
  • Silicon oxide
  • Silicon nitride
  • Silicon (oxy)nitride
  • Photoresist
  • PMMA
  • Mylar
  • SU-8

Almost any as long as it does not outgas.

Comment Sputter target size 2". Sputter target size 3-4" (usually 3"). So far (June 2025) Mo has been deposited in PC1. See process log for details.


* Please send a request to us if you wish to deposit more than 600 nm (write to metal@nanolab.dtu.dk)

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