Comparison of the Detection Efficiency $a-Se_{1-x}As_x$ in X-ray Detection Sensor of $Gd_2O_2S(Eu^{2+})/a$-Se Structure

$Gd_2O_2S(Eu^{2+} )/a$-Se$ 구조의 X선 검출 센서에서 $a-Se_{1-x}As_x$의 검출효율 비교

  • Kang, Sang-Sik (Department of Biomedical Engineering, College of Biomedical Science and Engineering, Inje University) ;
  • Park, Ji-Koon (Department of Biomedical Engineering, College of Biomedical Science and Engineering, Inje University) ;
  • Lee, Dong-Gil (Department of Biomedical Engineering, College of Biomedical Science and Engineering, Inje University) ;
  • Mun, Chi-Wung (Medical Imaging Research center of Inje University) ;
  • Nam, Sang-Hee (Medical Imaging Research center of Inje University)
  • 강상식 (인제대학교 의생명공학대학 의용공학과) ;
  • 박지군 (인제대학교 의생명공학대학 의용공학과) ;
  • 이동길 (인제대학교 의생명공학대학 의용공학과) ;
  • 문치웅 (인제대학교 의료영상연구소) ;
  • 남상희 (인제대학교 의료영상연구소)
  • Published : 2002.11.07

Abstract

Recently, It has performed that the basic research of the photoconductive material and the development and application of the digital radiograph detector which is divided into the direct and indirect method. The objective of this study investigate the effect of the electric characteristic about changing the composition of Arsenic in hybrid detector system for compensating a defect of conventional. We fabricated samples using the amorphous Selenium and Arsenic alloy with various concentrations of the Arsenic{seven step 0.1%, 0.3%, 0.5%, 1%, 1.5%, 3%, 5%). And using EFIRON optical adhesives the formed multi-layer$(Gd_{2}O_{2}S(Eu^{2+}))$ composed phosphor layer. X-ray and light sensitivity was measured to study x-ray response characteritics. As results, highest value was measured as output net charge and SNR were $315.7pC/cm^2/mR$ and 99.4 at 0.3%As doping ratio.

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