Topic summary
Direct electron detector
Extracted from the Wikipedia article Detectors for transmission electron microscopy.
Direct electron detectors
The use of scintillators to convert electrons to photons in CCD and CMOS cameras reduces the detective quantum efficiency (DQE) of these devices. Direct electron detectors, which have no scintillator and are directly exposed to the electron beam, typically offer higher DQE than scintillator-coupled cameras. There are two main types of direct electron detectors, both of which were first introduced to electron microscopy in the 2000s.