vor 6 Jahren

Cluster Report Photonics in the Capital Region Berlin-Brandenburg

  • Text
  • Imaging
  • Photonics
  • Berlin
  • Optical
  • Laser
  • Technologies
  • Optics
  • Microsystems
  • Components
  • Brandenburg


58 Cluster Report Optics and Photonics – Optical Analytics (e.g. corrosion protection or electromagnetic shielding). Many accredited test methods (DIN EN ISO/IEC 17025) are available for investigating the mechanical, optical, microstructural, and chemical characteristics of surface and layer parameters as well as general surface and layer properties such as surface topography and energy, layer thickness, and adhesion. EpiTT in situ sensor to analyse growth during MOCVD and MBE processes © LayTec AG Measurement technology for thin film processes Founded in 1999 as a spin-off of TU Berlin, LayTec AG has a leading position in process-integrated optical measurement technology for thin-film processes. The company’s measurement systems are used in various areas such as optoelectronics, electronics, photovoltaics, optics, photonics, and the semiconductor industry as well as in the manufacture of flat panel displays, memory chips, etc. They monitor the growth processes of crystal layers, for example, in metalorganic chemical vapor deposition (MOCVD) and molecular beam epitaxy (MBE). The company uses and combines optical measurement techniques such as reflection, emissivity-corrected pyrometry, laser deflectometry, reflection anisotropy spectroscopy, and scattered light and photoluminescence measurements to monitor the fabrication of nanodimensioned thin film structures. Optical methods are used to check the temperature, dimensions, quality, and surface finish of each sample. This is done either in situ directly during the process or inline between the individual coating steps of multilayer structures, shortening the development cycles and increasing the process yield. Nanotribology and nanostructuring of surfaces Analytical methods for tribology, mechanics, electrics, and optics on the submicrometre scale are the specialty of BAM’s Department of Nanotribology and Nanostructuring of Surfaces. Among other topics, the department is researching the structure-property relationships of complex polymer systems. Understanding the mechanisms of failure and damage in composites, inner and outer surfaces, and how polymer solids interface with organic, inorganic, and metallic solids is another focus of the department. Certified testing of coating systems and surfaces The Surface Modification and Measurement Technology Department of the Federal Institute for Materials Research and Testing Bundesanstalt für Materialforschung und -prüfung (BAM) investigates thin layers and functional surfaces such as hard coatings (e.g. wear protection), optical coating systems (e.g. UV protection), and metallic coatings Framed optics for high-precision laser beam guidance in tension-optimised holders © Berliner Glas Group

Cluster Report Optics and Photonics – Optical Analytics 59 Optical coatings The Berliner Glas Group offers coatings for a wide range of substrates and for wavelengths from VUV to the IR range. Many years of experience with various types of coatings enable the development team to find the best possible solutions from coating design to serial production. Customer-specific development and coating tasks include: anti-reflective (AR) and mirror (HR) layers, polarising and non-polarising beam splitters, various filters (transmittance, edge, and laser protection filters), absorption layers, various mechanical wear protection layers (also DLC), as well as bondable and solderable layers. LEED diffraction image © greateyes GmbH Thin-film technologies for photovoltaics At the PVcomB Competence Centre Thin-Film- and Nanotechnology for Photovoltaics Berlin thin-film photovoltaic technologies and products are jointly developed with the industry. Technology and knowledge transfer take place in research projects with industrial partners and through the training of highly qualified specialists. PVcomB offers support for industrial partners at the start of production or in the further development of industrial processes. It enables the research of promising new high-risk concepts and operates the transfer and upscaling of results from the theoretical research performed at HZB and TU Berlin up to the PVcomB standard size of 30 x 30 cm². Industrial partners can use the PVcomB reference lines as benchmarks, for example for new or alternative materials, analytics, and process controls. In a close collaboration between Helmholtz-Zentrum Berlin für Materialien und Energie (HZB), Technische Universität Berlin (TUB), the University of Applied Sciences Berlin (HTW) and other partners, PVcomB educates qualified engineers and academics. At PVcomB, thin-film photovoltaic technologies and products are developed jointly with the industry. © Berlin Partner for Business and Technology – Monique Wüstenhagen LEED imaging and measuring layer thickness in the EUV range Low-energy electron diffraction (LEED) can be used to study the arrangement of atoms on surfaces and in thin films. The material being investigated is illuminated with an electron beam. The electrons scattered on the sample surface are displayed on the monitor and create a characteristic diffraction pattern for the surface. This pattern provides information about the arrangement of the atoms and thus the composition of the sample. In the adjacent example image (LEED diffraction image), a sample was bombarded with electrons and the resulting diffraction pattern was recorded by the GE 1024 1024 BI MID camera from greateyes GmbH. The camera’s high sensitivity makes even weak diffraction reflections visible.

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