Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The characteristic study of hybrid X-ray detector using CdTe and Zns:AgCl phosphor

CdTe 와 ZnS:AgCl phosphor를 이용한 Hybrid형 X선 검출기의 특성연구

  • Seok, Dae-Woo (Department of Biomedical Engineering of Inje University) ;
  • Kang, Sang-Sik (Department of Biomedical Engineering of Inje University) ;
  • Kim, Jin-Young (Department of Biomedical Engineering of Inje University) ;
  • Park, Ji-Koon (Department of Biomedical Engineering of Inje University) ;
  • Mun, Chi-Woong (Medical Imaging Research center of Inje University) ;
  • Nam, Sang-Hee (Medical Imaging Research center of Inje University)
  • Published : 2003.05.16
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Abstract

Photoconductor for direct detection fiat-panel imager present a great materials challenge, since their requirement include high X-ray absorption, ionization and charge collection, low leakage current and large area deposition, CdTe is practical material. We report studies of detector sensitivity, That is an CdTe with $5{\mu}m$ thickness on glass. That is hybrid layer of depositting ZnS:AgCl phosphor with $100{\mu}m$ on CdTe. The leakage current of hybrid is similar to it of a-Se, but photocurrent is larger than a-Se. Both of them have high spatial resolution, but hybrid has higher sensitivity than a-Se at comparable bias voltage.

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