论文信息 - Quantitative evaluation of mercuric iodide thick film for x-ray imaging device

Quantitative evaluation of mercuric iodide thick film for x-ray imaging device

In this paper, we investigated electrical characteristics of the X-ray detector of mercuric iodide (HgI2) film fabricated by PIB(Particle-In-Binder) Method with thicknesses ranging from approximately 200μm to 240μm. In the present study, using I-V measurements, their electrical properties such as leakage current, X-ray sensitivity, and signal-to-noise ratio (SNR),were investigated. The results of our study can be useful in the future design and optimization of direct active-matrix flat-panel detectors (AMFPD) for various digital X-ray imaging modalities.

[1] Gary Virshup,et al. Large-area mercuric iodide x-ray imager , 2002, SPIE Medical Imaging.

[2] Gary Virshup,et al. Detailed imager evaluation and unique applications of a new 20x25-cm size mercuric iodide thick film x-ray detector , 2003, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[3] R. Anderson. Decay dynamics of free and trapped excitons in tetragonal mercuric iodide , 1996 .

[4] J A Rowlands,et al. X-ray detectors for digital radiography. , 1997, Physics in medicine and biology.

[5] Safa Kasap,et al. Review X-ray photoconductors and stabilized a-Se for direct conversion digital flat-panel X-ray image-detectors , 2000 .

[6] R. Stuck,et al. Current instability in mercuric iodide devices , 2000 .

[7] Robert A. Street,et al. Approaching the theoretical x-ray sensitivity with Hgl2 direct detection image sensors , 2002, SPIE Medical Imaging.

[8] Haim Hermon,et al. STUDY OF TRAPPING LEVELS IN DOPED HGI2 RADIATION DETECTORS , 1996 .

[9] D. Mcgregor,et al. Room-temperature compound semiconductor radiation detectors , 1997 .