Thursday, January 18, 2007

Imaging Charge Carrier Motion

This is so cool!

Using a combination of a scanning tunneling microscopy (STM) and laser illumination, a group in Japan has managed to image the motion of charge carrier density across a pn semiconductor junction. They apply different biasses and you can literally see what you have so far seen only schematically in textbooks of the depletion layer and charge diffusion across this layer.


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