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Metrology with Synchrotron Radiation

The Physikalisch-Technische Bundesanstalt (PTB) is the national metrology institute and the highest authority when it comes to correct and reliable measurements in Germany. Since 1982, PTB has also been using synchrotron radiation for metrological tasks. The more than 70 employees of the departments 7.1 Radiometry with Synchrotron Radiation and 7.2 X-ray Metrology with Synchrotron Radiation maintain and use for this purpose a Laboratory at the storage ring BESSY II of the Opens external link in new windowHelmholtz-Zentrum Berlin (HZB) as well as PTB's own Metrology Light Source (MLS) in Berlin-Adlershof.

The main focus of the work is on the following areas:

  •  Fundamentals of metrology, radiometry
  •  Metrology for industry, EUV lithography
  •  Research and development for optical technologies, space instruments
  •  Materials metrology, nanometrology

News

A nanospectroscopic device platform has been developed for the thermoelectric detection of molecular fingerprints of soft materials at nanometer scale spatial resolution. The technique makes use of a locally generated thermal gradient converted into a thermoelectric voltage that is read out in the underlying device. The thermal gradient is generated by an illuminated atomic force microscope tip...

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The metrological support of the German and European industries in the development of EUV lithography for semiconductor manufacturing is a major activity of PTB at its Berlin-Adlershof site. The close cooperation with ZEISS since 1998 forms a significant basis for the continuous development of PTB's metrological capabilities in the extreme ultraviolet spectral range (EUV). Based on the use of...

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Perovskite solar cells (CsPbI3-xBrx) with a low bandgap are an important ingredient in the development of highly efficient tandem solar cells, which layer a perovskite solar cell on top of a silicon solar cell to combine the light harvesting capabilities of both and reach high overall efficiency. The efficiency is vastly influenced by the crystal structure - phase composition and crystal...

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