The optical, electrical, and structural properties of dislocations and of grain boundaries in semiconductor materials can be determined by experiments performed in a scanning electron microscope. Electron microscopy has been used to investigate cathodoluminescence, electron beam induced current, and diffraction of backscattered electrons.
Hieckmann, E., Nacke, M., Allardt, M., Bodrov, Y., Chekhonin, P., Skrotzki, W., Weber, J. Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope. J. Vis. Exp. (111), e53872, doi:10.3791/53872 (2016).