A Comparison Between Spectroscopic Performance of HgI₂and CdZnTe Frisch Collar Detectors

TlHgInS3: An Indirect-Band-Gap Semiconductor with X-ray Photoconductivity Response

“…The electron µτ product for the TlHgInS 3 crystal was estimated at (µτ) e = 3.6 × 10 -4 cm 2 /V. This value is lower than those of the commercial grade CZT ((µτ) e = 4.5 × 10 -2 cm 2 /V) 6 and TlBr ((µτ) e = 6.5 × 10 -3 cm 2 /V) 29 . However, the estimated µτ products of both carriers for the title compound are comparable to other promising detector-grade crystals such as HgI 2 ((µτ) e = 8 × 10 -4 cm 2 /V, (µτ) h = 3 × 10 -5 cm 2 /V) 6 and PbI 2 ((µτ) e = 5 × 10 -4 cm 2 /V, (µτ) h = 2 × 10 -6 cm 2 /V).…”

“…28 CZT is the commercial benchmark solid state semiconductor for γ-ray detector which possesses high µτ products for electrons and holes as a measure of their performance in radiation detection, (µτ) e ~ 4.5 × 10 -2 cm 2 /V and (µτ) h ~ 1 × 10 -4 cm 2 /V. 6 TlBr 29 and HgI 2 6 also…”

Vapor Growth of Mercuric Iodide Tetragonal Prismatic Crystals

“…The spectra and the CCE calculation (Section 5.8), will show that, not only the tetragonal prismatic HgI 2 crystals are excellent materials for room-temperature γ-ray detectors, but the HgI 2 Frisch collar detector described in this study also achieved a 1.8% energy resolution for 662 keV γ-rays without further electronic corrections, hence, it is considered to be one of the best energy energy resolution for room-temperature HgI 2 detetectors [42,43,45,46].…”

“…The second most utilized vapor growth method for HgI 2 , the growth aided by organics in a horizontal furnace, yields crystals of ideal sizes and shapes to be fabricated directly into devices with no or little post-growth processing [28,29,32,[41][42][43][44][45][46]. [28,47].…”

Atomic spectrometry update—X-ray fluorescence spectrometry

“…In addition to the wide variety of materials being used in pixellated detectors, it is interesting to note the continuing investigations into a number of diverse detector materials. In a comparison 49 of mercuric iodide and CdZnTe detectors, primarily for hard X-ray and gamma ray detectors, it was shown that the charge collection efficiency was higher for CdZnTe, leading to improved peak shapes and lower spectrum background. The authors made careful measurements and simulations of charge carrier mobility and lifetime, further demonstrating the practical benefits of CdZnTe over mercuric iodide.…”