OET provides practical industry solutions to achieve a strong productivity improvement for OE devices production by developing sophisticated non-destructive and robust in-line metrology and control solutions for R2R printing and Vaccum processes for traceable measurement of properties and quality of highly integrated nano-layers and devices during their fabrication.

With more than 25 years of experience, OET delivers advanced solutions in optical metrology methodologies and instrumentation for the in-situ, in-line and real-time optical investigation of inorganic, organic and hybrid nanomaterials deposited by vacuum and printing methods.

Specifically, OET’s expertise encompasses the use of ultra fast in-line optical metrology tools like Spectroscopic Ellipsometry (SE) and Raman Spectroscopy (RS), enabling the real-time control on the process stability, properties homogeneity, material/device quality and performance reliability in R2R printing and Gas Transport Pilot and Production lines.

Why Spectroscopic Ellipsometry & Raman Spectroscopy for In-Line Optical Metrology?

  • Robust & Non-destructive
  • Monitoring sub-nm precision Film Thickness
  • Measuring Optical Properties
  • Surface Roughness with nm precision
  • Interfacial Mixing
  • Composition & Bonding structure
  • Crystallinity & Stoichiometry
  • Optical Anisotropy
  • Depth and Area Uniformity
  • Growth Mechanisms
  • Deposition Rate

You may find more information on the brochure below.

Relevant Publications

“In-line monitoring and quality control of flexible organic electronic materials” Handbook of Flexible Organic Electronics Materials, Manufacturing and Applications. Chapter 10 – (2015), Pages 227-251

“Ιn-line spectroscopic ellipsometry for the monitoring of the optical properties and quality of roll-to-roll printed nanolayers for organic photovoltaics”,  Solar Energy Materials and Solar Cells, Volume 112, May (2013), Pages 144-156

“Effect of process parameters on the morphology and nanostructure of roll-to-roll printed P3HT:PCBM thin films for organic photovoltaics”, Solar Energy Materials and Solar Cells, Volume 112, May (2013), Pages 36-46