Digital X-Ray Imaging Using Avalanche a-Se Photoconductor

作者：Sultana Afrin^*; Wronski Matthew M; Karim Karim S; Rowlands J A

来源：IEEE Sensors Journal, 2010, 10(2): 347-352.

DOI：10.1109/JSEN.2009.2034386

• Amorphous selenium
• amorphous silicon
• avalanche photoconductor
• passive pixel sensor
• thin-film transistor
• X-ray imaging

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 (similar to 1000 V) avalanche a-Se photoconductor with a low voltage (similar to 25 V) a-Si: H pixel sensor is demonstrated. Single pixel readout is done as a proof of concept.

• 出版日期2010-2