Recent status of VUV/EUV photodiodes for radiometric scale comparison

Semiconductor photodiodes are widely used for the dissemination of radiometric scales. For the extreme and vacuum ultraviolet spectral range (i.e., wavelengths between 10 nm and 200 nm) the performance of these devices does not suffice with respect to homogeneity and stability because of the extreme surface sensitivity. For future scale inter-comparisons, suitable detectors still have to be identified.