Detectors for transmission electron microscopy
There are a variety of technologies available for detecting and recording the images, diffraction patterns, and electron energy loss spectra produced using transmission electron microscopy (TEM). == Traditional detection techniques == Traditionally, TEM images or diffraction patterns could be observed using a fluorescent viewing screen, consisting of powdered ZnS or ZnS/CdS, which is excited by the electron beam via cathodoluminescence.
Source: Wikipedia — Detectors for transmission electron microscopy (CC BY-SA 4.0)