Thin Film Processing

Thin films are used for electronic applications, for wear and corrosion protection as well as for optical and structural applications. The functionalization of these layers by means of laser radiation enable the realization of ressource- and energy efficient production processes with minimal thermal load for the workpiece. The local selectivity as well as the inline-capabilty open new possibilities for the layout of new products and production processes.

Our service portfolio includes feasibility studies for customer-specific problems, integration of laser functionalization into the production process as well as consulting for the concept of processes and production lines.

Funtional Layers for Electronic Applications

• Selective gold-contacting
• Multi-material layers for component-connected sensors and actors
• Electrodes for Li-Ion batteries

Wear-/Corrosion Protection and Tribology

• Nano-ceramic layers
• Polymer layers
• Bonded coatings

Optical and structural Applications

• Anti-reflection coatings
• Carbon-fiber production

Dahmen, M.:
Laserbasierte Funktionalisierung von partikulären Polyetheretherketon-Beschichtungen auf Aluminiumsubstraten mittels Zwei-Strahl-Ansatz.
Dissertation RWTH Aachen University, 2023, Apprimus Verlag, Aachen, (2023)
http://doi.org/10.18154/RWTH-2023-11484 (Open Access)

Mertin, J.:
Laserbasierte Herstellung von Kupferschichten auf Aluminium-Oxid-Keramiken für Anwendungen in der Leistungselektronik.
Dissertation, RWTH Aachen University, 2023, Shaker Verlag, Düren, (2023)
http://doi.org/10.18154/RWTH-2023-09878 (Open Access)

Fink, S., Demir, D., Börner, M., Göken, V.,  Vedder, C.:
High-Speed Laser Drying of Lithium-Ion Battery Anodes: Challenges and Opportunities.
World Electric Vehicle Journal 14(9), 255- (2023)
https://doi.org/10.3390/wevj14090255 (Open Access)

Frühling, J, Schreyer, S., Fink, S, Vedder, C.:
Laser-based crystallization of oxide ceramic thin films for Solid Oxide Fuel Cells.
WLT/LiM Lasers in Manufacturing Conference 2023. 26. – 29. Juni 2023, München Germany.
Proceedings of World of Photonics, (5 S.), (2023)

Fink, S., Dahmen L., Vedder, C., Stollenwerk, J.:
Laser-based, direct formation of thin copper-nickel alloy films with low thermal coefficient of resistivity.
JOURNAL OF APPLIED PHYSICS 132(20), 205301- (2022)
https://doi.org/10.1063/5.0124000 (Open Access)

Scheld, W., Lobe, S., Uhlenbruck, S., Dellen, C., Sohn, Y., Hoff, L., Vondahlen, F., Guillon, O., Fattakhova-Rohlfing, D.:
Rapid thermal sintering of screen-printed LiCoO2 films.
THIN SOLID FILMS 749, 139177- (2022)
http://dx.doi.org/10.1016/j.tsf.2022.139177

Fink, S., Lübben, J., Schneller, T., Vedder, C., Böttger, U.:
Impact of the processing temperature on the laser-based crystallization of chemical solution deposited lead zirconate titanate thin films on short timescales.
JOURNAL OF APPLIED PHYSICS 131(12), 125302- (9 S.) (2022)
https://doi.org/10.1016/10.1063/5.0084953 (Open Access)

Dahmen, M., Vedder, C., Baek, S., Stollenwerk, J.:
Dual-beam Laser-based Processing of Tribological Polymer Coatings.
12th CIRP Conference on Photonic Technologies [LANE 2022], 4-8 September 2022, Fürth, Germany - (2022)

Hoff, L.C., Scheld, W.S., Vedder, C., Stollenwerk, J.:
Laser sintering of ceramic-based solid-state battery materials.
SPIE Photonics West 2022 On Demand - (2022) DOI: 10.1117/12.2607752

Hoff, L.C., Scheld, W.S., Vedder, C., Stollenwerk, J., Lobe, S., Uhlenbruck, S.:
Laser sintering of ceramic-based solid-state battery materials.
WLT/Lasers in Manufacturing Conference 2021, International Congress Center, Munich, Germany. Proceedings of World of Photonics, (7 S.), (2021)

Fuchs, F., Vedder, V., Stollenwerk, J., Loosen, P.:
Determination of the temperature dependent optical properties of amorphous silicon thin films at elevated temperatures.
OPTICS EXPRESS 29, 41356-41362 (2021) https://doi.org/10.1364/OE.437507

Rehberger, M., Noll, M.:
DMS-Sensoren aus dem 3D-Druck mit Low-Power-Funk-Telemetrie.
Elektronik-Praxis 17, 46-48 (2020)

Rehberger, M., Vedder, C., Schleifenbaum, J.H.:
Challenges and Opportunities for Laser-based Additive Manufacturing of Strain Sensors.
WLT/LiM Lasers in Manufacturing Conference 2019 Munich, June 24 - 27, 2019. Proceedings of World of Photonics, (8 S.) (2019)

Völl, A., Wollgarten, S., Stollenwerk, J., Loosen, P.:
Application specific intensity distributions for laser functionalization of (nano-)ceramic coatings as wear protection.
WLT/LiM Lasers in Manufacturing Conference 2017. Munich, June 26-29 2017. Proceedings of World of Photonics, (8 S.), (2017)

Sändker, H., Stollenwerk, J., Loosen, P.:
Laser-based process for polymeric tribological coatings on lightweight components.
SURFACE & COATINGS TECHNOLOGY 332
391-398 (2017) http://dx.doi.org/10.1016/j.surfcoat.2017.06.075

Opitz, M., Go, D., Lott, P., Müller,S., Stollenwerk, J., Kuehne, A., Roling, B.:
On the interplay of morphology and electronic conductivity of rotationally
spun carbon fiber mats.
JOURNAL OF APPLIED PHYSICS 122, 105104- (2017) http://dx.doi.org/10.1063/1.5001509

Sändker, H., Stollenwerk, J., Loosen, P.:
Laser-based Process for Polymeric Coatings on Temperature-Sensitive Metallic Components.
WLT/LiM Lasers in Manufacturing Conference 2017. Munich, June 26-29 2017. Proceedings of World of Photonics, (6 S.) 1-6 (2017)

Bilandžić, M. , Wollgarten, S. , Stollenwerk, J. , Poprawe, R. , Esteves-Oliveira, M. , Fischer, H.:
Glass-ceramic coating material for the CO2 laser based sintering of thin films as caries and erosion protection.
DENTAL MATERIALS 33
995-1003 (2017) http://dx.doi.org/10.1016/j.dental.2017.06.008

Buling, A., Sändker, H., Stollenwerk, J., Krupp, U., Hamann-Steinmeier, A.:
Laser Surface Pretreatment of 100Cr6 Bearing Steel - Hardening Effects and White Etching Zones.
APPLIED SURFACE SCIENCE 378, 564-571 (2016) DOI: 10.1016/j.apsusc.2016.03.088

Sändker, H., Stollenwerk, J., Hofmann, J., Loosen, P.:
Laser beam propagation and energy deposition in particulate PEEK layers.
Proceedings of World of Photonics. WLT/ LiM Lasers in Manufacturing, München, 22.06.-25.06.2015 1-9 (2015)