X-RAY SENSING PROPERTIES OF SOLUTION-GROWN PURE AND DOPED CADMIUM IODIDE CRYSTALS

  • Kusum Yadav, Dr. Kusum Rani, Dr. Ritu Dhingra

Abstract

This study investigates the X-ray sensing capabilities of solution-grown pure and doped cadmium iodide (CdI2) crystals. Single crystals of pure CdI2 and CdI2 doped with various concentrations of lead (Pb) and bismuth (Bi) were grown using the slow evaporation technique. The structural, optical, and electrical properties of the crystals were characterized using X-ray diffraction (XRD), UV-visible spectroscopy, and current-voltage (I-V) measurements. The X-ray sensing performance was evaluated by measuring the photocurrent response under X-ray irradiation at different dose rates. Results show that doping with Pb and Bi significantly enhances the X-ray sensitivity and response time of CdI2 crystals. The Pb-doped CdI2 crystals exhibited the highest sensitivity of 4.2 μC Gy−1 cm−3 at 0.5 at% Pb concentration. The improved performance is attributed to the increased charge carrier mobility and reduced trapping/recombination due to the dopants. This study demonstrates the potential of solution-grown doped CdI2 crystals as cost-effective materials for X-ray sensing applications. Keywords: Cadmium iodide, X-ray sensing, solution growth, doping, lead, bismuth
How to Cite
Kusum Yadav, Dr. Kusum Rani, Dr. Ritu Dhingra. (1). X-RAY SENSING PROPERTIES OF SOLUTION-GROWN PURE AND DOPED CADMIUM IODIDE CRYSTALS. International Journal Of Innovation In Engineering Research & Management UGC APPROVED NO. 48708, EFI 5.89, WORLD SCINTIFIC IF 6.33, 12(1), 07-11. Retrieved from https://journal.ijierm.co.in/index.php/ijierm/article/view/2610