Amorphous selenium photodetector on a flexible substrate for indirect conversion medical imaging

Shiva Abbaszadeh, Shaikh H. Majid, Nicholas Allec, Karim S. Karim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Amorphous selenium photodetectors, in both lateral and vertical structures, have been investigated for indirect conversion medical imaging applications. The low dark current, high responsivity for blue light, and possibility for gain are all among the attractive features of these devices. Typically these devices are deposited on a solid glass substrate and are read out using thin-film-transistors (TFTs). With the advent of flexible TFTs, flexible electronics have become a viable technology. This technology may be leveraged for flexible imaging, however the detection and conversion materials that serve to convert the incident x-rays to collectable charge will also need to be flexible. In this paper, we investigate the use of amorphous selenium photodetectors on flexible substrates and compare their performance with amorphous selenium photodetectors deposited on glass.

Original languageEnglish (US)
Title of host publicationMedical Imaging 2012
Subtitle of host publicationPhysics of Medical Imaging
DOIs
StatePublished - May 4 2012
Externally publishedYes
EventMedical Imaging 2012: Physics of Medical Imaging - San Diego, CA, United States
Duration: Feb 5 2012Feb 8 2012

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8313
ISSN (Print)1605-7422

Other

OtherMedical Imaging 2012: Physics of Medical Imaging
CountryUnited States
CitySan Diego, CA
Period2/5/122/8/12

Keywords

  • Flexible
  • amorphous selenium
  • conformal imaging
  • indirect conversion X-ray imager
  • metal-semiconductor-metal photodetector

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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