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Digital X-Ray Imaging Using Avalanche a-Se Photoconductor

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4 Author(s)
Sultana, A. ; Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada ; Wronski, M.M. ; Karim, K.S. ; Rowlands, J.A.

This work presents the development of a novel detector comprised of an avalanche amorphous selenium (a-Se) photoconductor and an amorphous silicon (a-Si:H) passive pixel sensor for digital X-ray imaging, in particular, for low exposure imaging applications. Electrical compatibility of a high voltage (~1000 V) avalanche a-Se photoconductor with a low voltage (~25 V) a-Si:H pixel sensor is demonstrated. Single pixel readout is done as a proof of concept.

Published in:

Sensors Journal, IEEE  (Volume:10 ,  Issue: 2 )