Radiometry with Synchrotron Radiation

Department 7.1

Tasks

Application of synchrotron radiation in the THz, IR, UV, EUV, VUV, and soft X-ray spectral range at the electron storage rings Metrology Light Source (MLS) and BESSY II for basic and applied metrological tasks:

Realisation of spectral responsivity scales in the UV, VUV, EUV, and soft X-ray ranges by means of cryogenic radiometers as primary detector standards
Calibration of radiation sources and detectors from the UV to soft X-rays
Photon diagnostics and materials research at X-ray lasers
Characterisation of space instrumentation
Reflectometry on optical components and materials from the UV to X-rays, in particular for EUV lithography
Investigation of nanolayers and nanostructure applying scattering techniques, soft X-ray reflectometry and IR-nearfieldmicroskopy
Quantitative characterization of surfaces and thin layers applying VUV ellipsometry, lectron spectroscopy and IR-spectrometry

News

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...

[ more ]

Perovskite solar cells (CsPbI_3-xBr_x) 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...

[ more ]

Simulation Rontgenfloureszenz Emissionenn

A new algorithm allows the fast reconstruction of atom distributions in 3D nanostructured surfaces

Over the last years, PTB has developed a new method for atom-specific reconstruction of periodically nanostructured surfaces. Recent studies have shown experimentally that it is possible to reconstruct and identify the spatial distribution of different atomic species in nano-components using X-ray...

[ more ]

More news