Latest revision as of 18:35, 28 February 2025

Process Control Data are standardized processes, run by the NanoFab, allowing for day-to-day or year-by-year comparisons of a tool's performance at the process level. This is similar Statistical Process Control (SPC).

These are the same links are found on individual tool pages, in the <<tool page>> > Process Control section.

Data are collected by our Process Group Interns and reviewed by Process Group Staff.

Deposition, Dielectric (Process Control Data)

Example Process Control Charts (SPC) for thin-film DepCals.

Example particle counts taken on each tool+film.

Example of DepCals Thickness/Refractive Index uniformity measurement (4% shown here).

Process Control data for various deposition tools in the lab.

PECVD #1 (PlasmaTherm 790)

PECVD #2 (Advanced Vacuum)

ICP-PECVD (Unaxis VLR Dep)

Ion Beam Sputter Deposition (Veeco Nexus)

Old Data (Pre 2022)

Old data in a different format can be found below:

Old Deposition Data - 2021-12-15

Deposition, Metal (Process Control Data)

Process Control data for various Metal evaporators in the lab.

E-Beam 4 (CHA)

E-Beam 4 Ti: Titanium Datasheet & Titanium Plots
E-Beam 4 Au: Gold Datasheet & Gold Plots
E-Beam 4 Cr: Chromium Datasheet & Chromium Plots
E-Beam 4 Ni: Nickel Datasheet & Nickel Plots

E-Beam 1 (Sharon)

Coming Soon...

Etching (Process Control Data)

Process Control data for various dry etching tools in the lab.

PlasmaTherm SLR Fluorine Etcher

SiO₂ Etching (FL-ICP Process Control)

We have found that SiO₂ etching is fairly insensitive to chamber condition.

Old SiO₂ Process Control Data

SiO₂ Etching with CHF₃/CF₄ (FL-ICP) - No data prior to 2023-01-20

Si Etching (FL-ICP Process Control)

This Si etch is much more sensitive to chamber condition, allowing us to detect chamber contamination faster.

Recipe: SiVertHFv2 - C₄F₈/SF₆/CF₄ etch of 100mm Silicon Wafer with ~50% open area and resist mask

Panasonic ICP #1

Old Process Control Data

SiO₂ Etch with CHF₃/CF₄ (Panasonic 1) - No data prior to 2023-01-20

Panasonic ICP#2

Old Process Control Data

SiO₂ Etching with CHF₃/CF₄ - ICP2 - No data prior to 2023-01-20

Unaxis VLR Etch

InP Etching with Cl₂/N₂ @ 200°C - Unaxis Etch

Oxford PlasmaPro Cobra Etcher

InP Ridge Etch: Cl₂/CH₄/H₂/60°C

Calibration / Process testing data taken using the "InP Ridge Etch" process: Cl2/CH4/H2 @ 60°C, 1cm piece with ~50% SiO2 hardmask.

Old InP Ridge Etch Data

InP Ridge Etch with Cl₂/CH₄/H₂ @ 60°C - No data prior to 2023-01-20

GaN Etch (Cl2/BCl3/Ar/200°C)

Recipe: Std GaN Etch - BCl3/Cl2/Ar - 200C (Public), on 1cm x 1cm ~1.2µm deep GaN etch with Cl2/BCl3/Ar at 200°C. Sapphire substrate with SiO2 mask for GaN.

PlasmaTherm DSEIII Deep Silicon Etcher

Si Bosch Etching C₄F₈/SF₆/Ar

Recipe: STD_Bosch_Si (⭐️Production), on 100mm Si Wafer with ~50% open area, photoresist mask, ~40µm deep

Lithography (Process Control Data)

Process Control Data for Nanofab Lithography/patterning tools.

Stepper #3 (ASML DUV)

The Process Group regularly measures data on lithography Critical Dimension ("CD") and Wafer-stage Particulate Contamination for this tool, using a sensitive lithography process that will reveal small changes in Dose repeatability and wafer flatness.
Plots of CD Repeatability
Data for CD Uniformity and Particulate Contamination

Example of Data Table with SEM's of 320nm features. Click for full data table.

Example SPC Chart - Measured Critical Dimension "CD" versus Date. Click for charts.

@@ Line 1: / Line 1: @@
+Process Control Data are standardized processes, run by the NanoFab, allowing for day-to-day or year-by-year comparisons of a tool's performance at the process level.  This is similar [https://en.wikipedia.org/wiki/Statistical_process_control Statistical Process Control (SPC)].
-These are the same links found on individual tool pages, in the '''''Recipes > <<tool page>> > Process Control''''' section.
+These are the same links are found on individual tool pages, in the '''''<<tool page>> > Process Control''''' section.
-= Lithography (Process Control Data) =
-''Process Control Data for Nanofab Lithography/patterning tools.''
+__TOC__
-== [[Stepper_Recipes#Stepper_3_.28ASML_DUV.29|Stepper #3 (ASML DUV)]] ==
+Data are collected by our [https://nanofab.ucsb.edu/workforce#internships Process Group Interns] and reviewed by [[Staff List#Process Group|Process Group Staff]].
-*''The Process Group regularly measures data on lithography Critical Dimension ("CD") and Wafer-stage Particulate Contamination for this tool, using a sensitive lithography process that will reveal small changes in Dose repeatability and wafer flatness.''
+=Deposition, Dielectric (Process Control Data)=
-*[https://docs.google.com/spreadsheets/d/1xW1TFH_QjPMWl9T1jiKzwmYe4B2wg7KY-nqOKUoXttI/edit#gid=1804752281 '''Plots of CD Repeatability''']
+[[File:PECVD SPC Chart Example.png|alt=SPC chart example|thumb|228x228px|Example Process Control Charts (SPC) for thin-film DepCals.]]
-*[https://docs.google.com/spreadsheets/d/1xW1TFH_QjPMWl9T1jiKzwmYe4B2wg7KY-nqOKUoXttI/edit#gid=0 '''Data for CD Uniformity and Particulate Contamination''']
+[[File:Surfscan 230113A7G2 after low particles.jpg|alt=screenshot of surfscan particle count|thumb|205x205px|Example particle counts taken on each tool+film.]]
+[[File:PECVD1 SiO2 F50 WaferMap example.jpg|alt=Screenshot of Filmetrics F50 wafermap of typical DepCals film|thumb|215x215px|Example of DepCals Thickness/Refractive Index uniformity measurement (4% shown here).]]
-<hr style="height:5px">
-<hr style="height:5px">
-=Deposition (Process Control Data)=
 ''Process Control data for various deposition tools in the lab.''
@@ Line 53: / Line 49: @@
 *[[Old Deposition Data - 2021-12-15]]
+<hr style="height:5px">
+<hr style="height:5px">
+=Deposition, Metal (Process Control Data)=
+''Process Control data for various Metal evaporators in the lab.''
+== [[E-Beam 4 (CHA)]] ==
+*E-Beam 4 Ti: [https://docs.google.com/spreadsheets/d/1W7OFMAlRIcbpjm7FsbCh9ZLCCbhEp0bhtAC7UqEmJ5U/edit?gid=0#gid=0 Titanium Datasheet] & [https://docs.google.com/spreadsheets/d/1W7OFMAlRIcbpjm7FsbCh9ZLCCbhEp0bhtAC7UqEmJ5U/edit?gid=384597990#gid=384597990 Titanium Plots]
+*E-Beam 4 Au: [https://docs.google.com/spreadsheets/d/1W7OFMAlRIcbpjm7FsbCh9ZLCCbhEp0bhtAC7UqEmJ5U/edit?gid=834604706#gid=834604706 Gold Datasheet] & [https://docs.google.com/spreadsheets/d/1W7OFMAlRIcbpjm7FsbCh9ZLCCbhEp0bhtAC7UqEmJ5U/edit?gid=721807140#gid=721807140 Gold Plots]
+*E-Beam 4 Cr: [https://docs.google.com/spreadsheets/d/1W7OFMAlRIcbpjm7FsbCh9ZLCCbhEp0bhtAC7UqEmJ5U/edit?gid=1629968393#gid=1629968393 Chromium Datasheet] & [https://docs.google.com/spreadsheets/d/1W7OFMAlRIcbpjm7FsbCh9ZLCCbhEp0bhtAC7UqEmJ5U/edit?gid=701729811#gid=701729811 Chromium Plots]
+*E-Beam 4 Ni: [https://docs.google.com/spreadsheets/d/1W7OFMAlRIcbpjm7FsbCh9ZLCCbhEp0bhtAC7UqEmJ5U/edit?gid=649905488#gid=649905488 Nickel Datasheet] & [https://docs.google.com/spreadsheets/d/1W7OFMAlRIcbpjm7FsbCh9ZLCCbhEp0bhtAC7UqEmJ5U/edit?gid=1525197973#gid=1525197973 Nickel Plots]
+== [[E-Beam 1 (Sharon)]] ==
+''Coming Soon...''
 <hr style="height:5px">
@@ Line 61: / Line 71: @@
 ==[[ICP Etching Recipes#Process Control Data .28Fluorine ICP Etcher.29|PlasmaTherm SLR Fluorine Etcher]]==
+=== SiO<sub>2</sub> Etching (FL-ICP Process Control) ===
-*[https://docs.google.com/spreadsheets/d/15hYkCqL3UNNayt4sXrvVi4mBj-OSdnF7PE29mQW9AEY/edit?usp=sharing SiO<sub>2</sub> Etching with CHF3/CF4 - '''Etch Data''']
+''We have found that SiO<sub>2</sub> etching is fairly insensitive to chamber condition.''
-*[https://docs.google.com/spreadsheets/d/15hYkCqL3UNNayt4sXrvVi4mBj-OSdnF7PE29mQW9AEY/edit#gid=1804752281 SiO<sub>2</sub> Etching with CHF3/CF4 - '''Plots'''][[File:FL-ICP Process Control Data Example.jpg|alt=example of Process Control Charts|none|thumb|242x242px|[https://docs.google.com/spreadsheets/d/15hYkCqL3UNNayt4sXrvVi4mBj-OSdnF7PE29mQW9AEY/edit#gid=1804752281 Click for Process Control Charts]|link=https://docs.google.com/spreadsheets/d/15hYkCqL3UNNayt4sXrvVi4mBj-OSdnF7PE29mQW9AEY/edit#gid=1804752281]]
+*[https://docs.google.com/spreadsheets/d/15hYkCqL3UNNayt4sXrvVi4mBj-OSdnF7PE29mQW9AEY/edit?usp=sharing SiO<sub>2</sub> Etching with CHF<sub>3</sub>/CF<sub>4</sub> - '''Etch Data''']
+*[https://docs.google.com/spreadsheets/d/15hYkCqL3UNNayt4sXrvVi4mBj-OSdnF7PE29mQW9AEY/edit#gid=1804752281 SiO<sub>2</sub> Etching with CHF<sub>3</sub>/CF<sub>4</sub> - '''Plots'''][[File:FL-ICP Process Control Data Example.jpg|alt=example of Process Control Charts|none|thumb|242x242px|[https://docs.google.com/spreadsheets/d/15hYkCqL3UNNayt4sXrvVi4mBj-OSdnF7PE29mQW9AEY/edit#gid=1804752281 Click for Process Control Charts]|link=https://docs.google.com/spreadsheets/d/15hYkCqL3UNNayt4sXrvVi4mBj-OSdnF7PE29mQW9AEY/edit#gid=1804752281]]
-====OLD Process Control Data====
+====Old SiO<sub>2</sub> Process Control Data====
-*[[Test Data of Etching SiO2 with CHF3/CF4-Fluorine ICP Etcher|SiO<sub>2</sub> Etching with CHF3/CF4 (FL-ICP]]) - ''No data prior to 2023-01-20''
+*[[Test Data of Etching SiO2 with CHF3/CF4-Fluorine ICP Etcher|SiO<sub>2</sub> Etching with CHF<sub>3</sub>/CF<sub>4</sub> (FL-ICP]]) - ''No data prior to 2023-01-20''
+=== Si Etching (FL-ICP Process Control) ===
+''This Si etch is much more sensitive to chamber condition, allowing us to detect chamber contamination faster.''
+*'''Recipe: SiVertHFv2''' - C<sub>4</sub>F<sub>8</sub>/SF<sub>6</sub>/CF<sub>4</sub> etch of 100mm Silicon Wafer with ~50% open area and resist mask
+*[https://docs.google.com/spreadsheets/d/15iRs-JhfgkMto5rZVtG0hJjcLMiHy039_ahv2nus0UQ/edit?gid=0#gid=0 Si Etching with C<sub>4</sub>F<sub>8</sub>/SF<sub>6</sub>/CF<sub>4</sub> - '''Etch Data''']
+*[https://docs.google.com/spreadsheets/d/15iRs-JhfgkMto5rZVtG0hJjcLMiHy039_ahv2nus0UQ/edit?gid=1804752281#gid=1804752281 Si Etching with C<sub>4</sub>F<sub>8</sub>/SF<sub>6</sub>/CF<sub>4</sub> - '''Plots'''][[File:FICP-Si.png|alt=example of Process Control Charts|none|thumb|242x242px|[https://docs.google.com/spreadsheets/d/15iRs-JhfgkMto5rZVtG0hJjcLMiHy039_ahv2nus0UQ/edit?gid=1804752281#gid=1804752281 Click for Process Control Charts]|link=https://docs.google.com/spreadsheets/d/15iRs-JhfgkMto5rZVtG0hJjcLMiHy039_ahv2nus0UQ/edit?gid=1804752281#gid=1804752281]]
 ==[[ICP Etching Recipes#Process Control Data .28Panasonic 1.29|Panasonic ICP #1]]==
@@ Line 79: / Line 98: @@
 ==[[ICP Etching Recipes#Process Control Data .28Panasonic 2.29|Panasonic ICP#2]]==
-*[https://docs.google.com/spreadsheets/d/1m0l_UK2lDxlgww4f6nfXe4aQedNeDZsLs46jQ5wR4zw/edit?usp=sharing SiO2 Etch with CHF3/CF4 - '''Etch Data''']
+*[https://docs.google.com/spreadsheets/d/1m0l_UK2lDxlgww4f6nfXe4aQedNeDZsLs46jQ5wR4zw/edit?usp=sharing SiO<sub>2</sub> Etch with CHF<sub>3</sub>/CF<sub>4</sub> - '''Etch Data''']
-*[https://docs.google.com/spreadsheets/d/1m0l_UK2lDxlgww4f6nfXe4aQedNeDZsLs46jQ5wR4zw/edit#gid=1804752281 SiO2 Etch with CHF3/CF4 - '''Plots'''][[File:ICP2 Process Control Data Example.jpg|alt=example ICP2 process control chart|none|thumb|250x250px|[https://docs.google.com/spreadsheets/d/1m0l_UK2lDxlgww4f6nfXe4aQedNeDZsLs46jQ5wR4zw/edit#gid=1804752281 Click for Process Control Charts]|link=https://docs.google.com/spreadsheets/d/1m0l_UK2lDxlgww4f6nfXe4aQedNeDZsLs46jQ5wR4zw/edit#gid=1804752281]]
+*[https://docs.google.com/spreadsheets/d/1m0l_UK2lDxlgww4f6nfXe4aQedNeDZsLs46jQ5wR4zw/edit#gid=1804752281 SiO<sub>2</sub> Etch with CHF<sub>3</sub>/CF<sub>4</sub> - '''Plots'''][[File:ICP2 Process Control Data Example.jpg|alt=example ICP2 process control chart|none|thumb|250x250px|[https://docs.google.com/spreadsheets/d/1m0l_UK2lDxlgww4f6nfXe4aQedNeDZsLs46jQ5wR4zw/edit#gid=1804752281 Click for Process Control Charts]|link=https://docs.google.com/spreadsheets/d/1m0l_UK2lDxlgww4f6nfXe4aQedNeDZsLs46jQ5wR4zw/edit#gid=1804752281]]
 ====Old Process Control Data====
-*[[Test Data of etching SiO2 with CHF3/CF4|SiO2 Etching with CHF3/CF4 - ICP2]] - ''No data prior to 2023-01-20''
+*[[Test Data of etching SiO2 with CHF3/CF4|SiO<sub>2</sub> Etching with CHF<sub>3</sub>/CF<sub>4</sub> - ICP2]] - ''No data prior to 2023-01-20''
 ==[[ICP Etching Recipes#Process Control Data .28Unaxis VLR.29|Unaxis VLR Etch]]==
-*[[Unaxis VLR Etch - Process Control Data|InP Etching with Cl2/N2 @ 200°C - Unaxis Etch]]
+*[[Unaxis VLR Etch - Process Control Data|InP Etching with Cl<sub>2</sub>/N<sub>2</sub> @ 200°C - Unaxis Etch]]
 ==[[ICP Etching Recipes#Process Control Data .28Oxford ICP Etcher.29|Oxford PlasmaPro Cobra Etcher]]==
+=== InP Ridge Etch: Cl<sub>2</sub>/CH<sub>4</sub>/H<sub>2</sub>/60°C ===
 ''Calibration / Process testing data taken using the "InP Ridge Etch" process: Cl2/CH4/H2 @ 60°C, 1cm piece with ~50% SiO2 hardmask.''
 *[https://docs.google.com/spreadsheets/d/1cEUB7K5BAg9N4vp3rPZw7g0orFkxeQmRkX34Fb4eZco/edit?usp=sharing "Std InP Ridge Etch" Cl<sub>2</sub>/CH<sub>4</sub>/H<sub>2</sub>/60°C - '''Etch Data Tables''']
-*[https://docs.google.com/spreadsheets/d/1cEUB7K5BAg9N4vp3rPZw7g0orFkxeQmRkX34Fb4eZco/edit#gid=1804752281 "Std InP Ridge Etch" Cl<sub>2</sub>/CH<sub>4</sub>/H<sub>2</sub>/60°C - '''Plots'''][[File:Oxford-ICP-Etch Process Control Data Example.jpg|alt=example SPC chart for Oxford ICP Etcher|none|thumb|225x225px|[https://docs.google.com/spreadsheets/d/1cEUB7K5BAg9N4vp3rPZw7g0orFkxeQmRkX34Fb4eZco/edit#gid=1804752281 Click for Process Control Charts]|link=https://docs.google.com/spreadsheets/d/1cEUB7K5BAg9N4vp3rPZw7g0orFkxeQmRkX34Fb4eZco/edit#gid=1804752281]]
+*[https://docs.google.com/spreadsheets/d/1cEUB7K5BAg9N4vp3rPZw7g0orFkxeQmRkX34Fb4eZco/edit#gid=1804752281 "Std InP Ridge Etch" Cl<sub>2</sub>/CH<sub>4</sub>/H<sub>2</sub>/60°C - '''Plots'''][[File:Oxford-ICP-Etch Process Control Data Example.jpg|alt=example SPC chart for Oxford ICP Etcher|none|thumb|276x276px|[https://docs.google.com/spreadsheets/d/1cEUB7K5BAg9N4vp3rPZw7g0orFkxeQmRkX34Fb4eZco/edit#gid=1804752281 Click for Process Control Charts]|link=https://docs.google.com/spreadsheets/d/1cEUB7K5BAg9N4vp3rPZw7g0orFkxeQmRkX34Fb4eZco/edit#gid=1804752281]]
-====Old Process Control Data====
+====Old InP Ridge Etch Data====
+*[[Oxford ICP Etcher - Process Control Data|InP Ridge Etch with Cl<sub>2</sub>/CH<sub>4</sub>/H<sub>2</sub> @ 60°C]] - ''No data prior to 2023-01-20''
+=== GaN Etch (Cl2/BCl3/Ar/200°C) ===
+Recipe: ''Std GaN Etch - BCl3/Cl2/Ar - 200C (Public)'', on 1cm x 1cm ''~1.2µm deep GaN etch with Cl2/BCl3/Ar at 200°C.'' Sapphire substrate with SiO2 mask for GaN.
+* [https://docs.google.com/spreadsheets/d/1Pk8VwZlZ2lUf3aL9J2El5ZygqHY040TX3ZAMwa33LpE/edit?gid=0#gid=0 GaN Etching with Cl2/BCl3/Ar at 200°C - Etch Data]
+* [https://docs.google.com/spreadsheets/d/1Pk8VwZlZ2lUf3aL9J2El5ZygqHY040TX3ZAMwa33LpE/edit?gid=507237279#gid=507237279 GaN Etching with Cl2/BCl3/Ar at 200°C - Plots][[File:GaN SPC.png|alt=example of Process Control Charts|none|thumb|[https://docs.google.com/spreadsheets/d/1Pk8VwZlZ2lUf3aL9J2El5ZygqHY040TX3ZAMwa33LpE/edit?gid=507237279#gid=507237279 Click for Process Control Charts]|link=https://docs.google.com/spreadsheets/d/1Pk8VwZlZ2lUf3aL9J2El5ZygqHY040TX3ZAMwa33LpE/edit?gid=507237279#gid=507237279]]
+<hr style="height:5px">
+<hr style="height:5px">
+== [[DSEIII (PlasmaTherm/Deep Silicon Etcher)|PlasmaTherm DSEIII Deep Silicon Etcher]] ==
+=== Si Bosch Etching C<sub>4</sub>F<sub>8</sub>/SF<sub>6</sub>/Ar ===
+*Recipe: ''STD_Bosch_Si (⭐️Production),'' on 100mm Si Wafer with ~50% open area, photoresist mask, ~40µm deep
+*[https://docs.google.com/spreadsheets/d/1xQcdUH560nT928miZMeP7xxQSwHz_a_EB9s_Kb1LSfg/edit?gid=0#gid=0 Si Etching with C<sub>4</sub>F<sub>8</sub>/SF<sub>6</sub>/Ar - '''Etch Data''']
+*[https://docs.google.com/spreadsheets/d/1xQcdUH560nT928miZMeP7xxQSwHz_a_EB9s_Kb1LSfg/edit?gid=1804752281#gid=1804752281 Si Etching with C<sub>4</sub>F<sub>8</sub>/SF<sub>6</sub>/Ar - '''Plots'''][[File:DSE plot.png|alt=example of Process Control Charts|none|thumb|[https://docs.google.com/spreadsheets/d/1xQcdUH560nT928miZMeP7xxQSwHz_a_EB9s_Kb1LSfg/edit?gid=1804752281#gid=1804752281 Click for Process Control Charts]|link=https://docs.google.com/spreadsheets/d/1xQcdUH560nT928miZMeP7xxQSwHz_a_EB9s_Kb1LSfg/edit?gid=1804752281#gid=1804752281]]
+<hr style="height:5px">
+<hr style="height:5px">
+=Lithography (Process Control Data)=
+''Process Control Data for Nanofab Lithography/patterning tools.''
+==[[Stepper_Recipes#Stepper_3_.28ASML_DUV.29|Stepper #3 (ASML DUV)]]==
+*''The Process Group regularly measures data on lithography Critical Dimension ("CD") and Wafer-stage Particulate Contamination for this tool, using a sensitive lithography process that will reveal small changes in Dose repeatability and wafer flatness.''
+*[https://docs.google.com/spreadsheets/d/1xW1TFH_QjPMWl9T1jiKzwmYe4B2wg7KY-nqOKUoXttI/edit#gid=1804752281 '''Plots of CD Repeatability''']
+*[https://docs.google.com/spreadsheets/d/1xW1TFH_QjPMWl9T1jiKzwmYe4B2wg7KY-nqOKUoXttI/edit#gid=0 '''Data for CD Uniformity and Particulate Contamination''']
+:{|
-*[[Oxford ICP Etcher - Process Control Data|InP Ridge Etch with Cl2/CH4/H2 @ 60°C]] - ''No data prior to 2023-01-20''
+|[[File:ASML CD Cals - Example Table.jpg|alt=ASML CD Calibration data - Screenshot of Table|none|thumb|300x300px|''Example of Data Table with SEM's of 320nm features. [https://docs.google.com/spreadsheets/d/1xW1TFH_QjPMWl9T1jiKzwmYe4B2wg7KY-nqOKUoXttI/edit#gid=0 Click for full data table.]''|link=https://docs.google.com/spreadsheets/d/1xW1TFH_QjPMWl9T1jiKzwmYe4B2wg7KY-nqOKUoXttI/edit#gid=0]]
+|[[File:ASML CD Cals - Example Plot.jpg|alt=ASML CD Calibration Data - Screenshot of SPC Plot|none|thumb|''Example SPC Chart - Measured Critical Dimension "CD" versus Date. [https://docs.google.com/spreadsheets/d/1xW1TFH_QjPMWl9T1jiKzwmYe4B2wg7KY-nqOKUoXttI/edit#gid=1804752281 Click for charts.]''|link=https://docs.google.com/spreadsheets/d/1xW1TFH_QjPMWl9T1jiKzwmYe4B2wg7KY-nqOKUoXttI/edit#gid=1804752281]]
+|}

Process Group - Process Control Data: Difference between revisions

Latest revision as of 18:35, 28 February 2025

Contents

Deposition, Dielectric (Process Control Data)

PECVD #1 (PlasmaTherm 790)

PECVD #2 (Advanced Vacuum)

ICP-PECVD (Unaxis VLR Dep)