Tandem solar cells that pair silicon with a metal halide perovskite are a promising option for
surpassing the single-cell efficiency limit. We report a monolithic perovskite/silicon tandem …

Solar cells incorporating metal‐halide perovskite (MHP) semiconductors are continuing to
break efficiency records for solution‐processed solar cell devices. Scaling MHP‐based …

For more than 25 years, the Physikalisch‐Technische Bundesanstalt has been strongly
engaged in the field of metrology using synchrotron radiation. In Berlin, this research …

Tin is the frontrunner for substituting toxic lead in perovskite solar cells. However, tin suffers
the detrimental oxidation of SnII to SnIV. Most of reported strategies employ SnF2 in the …

Photostability is critical for long-term solar cell operation. While light-triggered defects are
usually reported as evidence of material degradation, we reveal that the formation of certain …

The crystal monochromator beamline KMC-1 at a BESSY II bending magnet covers the
energy range from soft (1.7 keV) to hard x-rays (12 keV) employing the (n,− n) double crystal …

We have developed different types of photodetectors that are based on the photoionization
of a gas at a low target density. The almost transparent devices were optimized and tested …

Proteins that contain metal cofactors are expected to be highly radiation sensitive since the
degree of X-ray absorption correlates with the presence of high-atomic-number elements …

Background Extracellular vesicles (EVs) have clinical importance due to their roles in a wide
range of biological processes. The detection and characterization of EVs are challenging …

Silicon Pore Optics (SPO) is a new X‐ray optics technology under development in Europe,
forming the ESA baseline technology for the International X‐ray Observatory candidate …