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Specific Process Knowledge/Characterization/SEM: Scanning Electron Microscopy: Difference between revisions

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{| border="2" cellspacing="0" cellpadding="0"  
{| border="2" cellspacing="0" cellpadding="0"  
!colspan="2" border="none" style="background:silver; color:black;" align="center"|Equipment  
!colspan="2" border="none" style="background:silver; color:black;" align="center"|Equipment  
|style="background:WhiteSmoke; color:black" align="center"|[[Specific_Process_Knowledge/Characterization/SEM_LEO|SEM LEO]]
|style="background:WhiteSmoke; color:black" align="center"|[[Specific_Process_Knowledge/Characterization/SEM_Supra_1|SEM Supra 1]]
|style="background:WhiteSmoke; color:black" align="center"|[[Specific_Process_Knowledge/Characterization/SEM_Supra_1|SEM Supra 1]]
|style="background:WhiteSmoke; color:black" align="center"|[[Specific_Process_Knowledge/Characterization/SEM_Supra_2|SEM Supra 2]]
|style="background:WhiteSmoke; color:black" align="center"|[[Specific_Process_Knowledge/Characterization/SEM_Supra_2|SEM Supra 2]]
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!colspan="2" border="none" style="background:silver; color:black;" align="center"|Model  
!colspan="2" border="none" style="background:silver; color:black;" align="center"|Model  
|style="background:WhiteSmoke; color:black" align="center"| Leo 1550 SEM
|style="background:WhiteSmoke; color:black" align="center"| Zeiss Supra 40 VP
|style="background:WhiteSmoke; color:black" align="center"| Zeiss Supra 40 VP
|style="background:WhiteSmoke; color:black" align="center"| Zeiss Supra 60 VP
|style="background:WhiteSmoke; color:black" align="center"| Zeiss Supra 60 VP
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!style="background:silver; color:black" align="center" valign="center" rowspan="2"|Purpose  
!style="background:silver; color:black" align="center" valign="center" rowspan="2"|Purpose  
|style="background:LightGrey; color:black" align="center" | Imaging and measurement of
|style="background:LightGrey; color:black" align="center" | Imaging and measurement of
|style="background:WhiteSmoke; color:black"|
* Conducting samples
* Semi-conducting samples
* Thin (~ 5 µm <) layers of non-conducting materials such as polymers
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
* Conducting samples
* Conducting samples
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|style="background:LightGrey; color:black" align="center" |Other purpose
|style="background:LightGrey; color:black" align="center" |Other purpose
|style="background:WhiteSmoke; color:black"|
* E-beam lithography using Raith Elphy Quantum system
|style="background:WhiteSmoke; color:black"| <!-- comment -->
|style="background:WhiteSmoke; color:black"| <!-- comment -->
|style="background:WhiteSmoke; color:black"|  
|style="background:WhiteSmoke; color:black"|  
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!style="background:silver; color:black;" align="center" width="60"|Instrument location
!style="background:silver; color:black;" align="center" width="60"|Instrument location
|style="background:LightGrey; color:black"|  
|style="background:LightGrey; color:black"|  
|style="background:WhiteSmoke; color:black"|
*Cleanroom of DTU Nanolab in building 346
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
*Basement of building 346
*Basement of building 346
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!style="background:silver; color:black" align="center" valign="center" rowspan="2"|Performance
!style="background:silver; color:black" align="center" valign="center" rowspan="2"|Performance
|style="background:LightGrey; color:black" rowspan="2" align="center" |Resolution
|style="background:LightGrey; color:black" rowspan="2" align="center" |Resolution
|style="background:Whitesmoke; color:black" colspan="5" align="center"| The resolution of a SEM is strongly dependent on the type of sample and the skills of the operator. The highest resolution is probably only achieved on special samples
|style="background:Whitesmoke; color:black" colspan="4" align="center"| The resolution of a SEM is strongly dependent on the type of sample and the skills of the operator. The highest resolution is probably only achieved on special samples
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|-
|style="background:WhiteSmoke; color:black"|
* ~ 5 nm (limited by vibrations)
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
* 1-2 nm (limited by vibrations)
* 1-2 nm (limited by vibrations)
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!style="background:silver; color:black" align="center" valign="center" rowspan="5"|Instrument specifics
!style="background:silver; color:black" align="center" valign="center" rowspan="5"|Instrument specifics
|style="background:LightGrey; color:black" align="center" |Detectors
|style="background:LightGrey; color:black" align="center" |Detectors
|style="background:WhiteSmoke; color:black"|
* Secondary electron (Se2)
* Inlens secondary electron (Inlens)
* Backscatter electron (BSD)
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
* Secondary electron (Se2)
* Secondary electron (Se2)
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|style="background:LightGrey; color:black" align="center" |Stage
|style="background:LightGrey; color:black" align="center" |Stage
|style="background:WhiteSmoke; color:black"|
* X, Y: 125 &times; 100 mm
* T: 0 to 90<sup>o</sup>
* R: 360<sup>o</sup>
* Z: 48 mm
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
* X, Y: 130 &times; 130 mm
* X, Y: 130 &times; 130 mm
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|style="background:LightGrey; color:black" align="center" |Electron source
|style="background:LightGrey; color:black" align="center" |Electron source
|style="background:Whitesmoke; color:black" colspan="4" align="center"| FEG (Field Emission Gun) source
|style="background:Whitesmoke; color:black" colspan="3" align="center"| FEG (Field Emission Gun) source
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
* Thermionic tungsten filament
* Thermionic tungsten filament
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|style="background:LightGrey; color:black" align="center" |Operating pressures
|style="background:LightGrey; color:black" align="center" |Operating pressures
|style="background:WhiteSmoke; color:black"|
* Fixed at High vacuum (2 &times; 10<sup>-5</sup>mbar - 10<sup>-6</sup>mbar)
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
* Fixed at High vacuum (2 &times; 10<sup>-4</sup>mbar - 10<sup>-6</sup>mbar)
* Fixed at High vacuum (2 &times; 10<sup>-4</sup>mbar - 10<sup>-6</sup>mbar)
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|style="background:LightGrey; color:black" align="center" |Options
|style="background:LightGrey; color:black" align="center" |Options
|style="background:WhiteSmoke; color:black"|
* Raith Elphy Quantum E-Beam Litography system
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
* All software options available
* All software options available
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!style="background:silver; color:black" align="center" valign="center" rowspan="3" align="center" |Substrates
!style="background:silver; color:black" align="center" valign="center" rowspan="3" align="center" |Substrates
|style="background:LightGrey; color:black" align="center" |Sample sizes
|style="background:LightGrey; color:black" align="center" |Sample sizes
|style="background:WhiteSmoke; color:black"|
* Wafers up to 6" (only full view up to 4")
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
* Up to 6" wafer with full view
* Up to 6" wafer with full view
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| style="background:LightGrey; color:black" align="center" |Allowed materials
| style="background:LightGrey; color:black" align="center" |Allowed materials
|style="background:WhiteSmoke; color:black"|
* Any standard cleanroom materials
|style="background:WhiteSmoke; color:black"|
|style="background:WhiteSmoke; color:black"|
* Any standard cleanroom material and samples from the Laser Micromachining tool and the Polymer Injection Molding tool
* Any standard cleanroom material and samples from the Laser Micromachining tool and the Polymer Injection Molding tool
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==Comparison of SEM's in building 346==
==Comparison of SEM's in building 346==