Growth of mercuric iodide platelets for X-ray room temperature detectors in the HgI2–HI–H2O system

Fornaro, L.; Luchini, L.; Köncke, M.; Mussio, L.; Quagliata, E.; Chattopadhyay, K.; Bürger, A.

doi:10.1016/s0022-0248(00)00461-9

Cited by 14 publications

(9 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the solubility temperature coefficient is extremely small. 17 Therefore, the temperature difference method, which utilized the constant temperature difference to realize sustained growth of crystals, is employed in this system. The obtained crystals are plate-like and around 4 × 4 × 2 mm 3 millimeter sized as Figure 2a shows.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Crystal Growth of α-HgI₂ by the Temperature Difference Method for High Sensitivity X-ray Detection

Zhang

Zheng

Chen

et al. 2015

Crystal Growth & Design

View full text Add to dashboard Cite

α-HgI 2 is a promising material for room temperature X-ray detection. A facile temperature difference method is designed to grow 4 × 4 × 2 mm 3 α-HgI 2 bulk crystal from KI aqueous solution. Characterization results indicate the as-grown high quality crystals are single-crystalline and possess a standard bandgap (E g = 2.16 eV at 300 K) and high electrical resistivity (10 10 Ω·cm). Utilizing the as-grown crystal, moreover, a photoconductive type prototype X-ray detector is fabricated. The detector behaves at high X-ray sensitivity, which is improved by one order of magnitude in comparison with previous results from solution grown α-HgI 2 . In addition to α-HgI 2 , the crystal growth of other halides materials which are used for X-ray detection, e.g., PbI 2 , HgBr 2 , BiI 3 , may also benefit from the presented temperature difference method.

show abstract

Section: ■ Experimental Sectionmentioning

confidence: 99%

Crystal Growth of α-HgI₂ by the Temperature Difference Method for High Sensitivity X-ray Detection

Zhang

Zheng

Chen

et al. 2015

Crystal Growth & Design

View full text Add to dashboard Cite

show abstract

“…In contrast to the CdI 2 type structure, some of the coordinated metal atoms are displaced along c from the centroïds of the octahedra, leading to three distinct mercury sites and thus Z ¼ 3 instead of Z ¼ 1: Fig. 4 presents a 3.64(2) and 3.78(2) Å . Surprisingly, the average isotropic displacement parameter of the Hg atoms is 1.7 times larger than the one of Br.…”

Section: Structure Of Phase IVmentioning

confidence: 96%

Structure and SHG of the high pressure phase IV of HgBr2

Hostettler

Schwarzenbach

Helbing

et al. 2004

Solid State Communications

View full text Add to dashboard Cite

Angle dispersive X-ray diffraction experiments on mercuric bromide (HgBr 2 ) under high pressure up to 11.0 GPa were carried out at room temperature using synchrotron radiation. In addition to the already known four different phases of HgBr 2 in the pressure -temperature range of p , 4:5 GPa, 90 , T , 600 K our observations show the existence of a new phase (V) above 9.0 GPa and, together with published material, support the phase transition sequence: (I) orthorhombic -(II) orthorhombic -(III) monoclinic -(IV) trigonal -(V) trigonal/hexagonal. The structure of phase IV with space group symmetry P3 has been determined from powder diffraction data. The observation of second-harmonic-generation signals confirms the absence of an inversion center. The structure of phase IV is a commensurately modulated variant of the CdI 2 type layer structure, where part of the Hg atoms are displaced from the centers of the HgBr 6 octahedra by a much as 0.76 Å in the direction perpendicular to the layers. q

show abstract

“…6 Other studies have obtained HgI 2 using polycrystalline films produced by thermal evaporation, 7 spray pyrolysis, 8 physical vapor deposition, 9 and casting. 10 Still other techniques such as Physical Vapor Transport (PVT) 11,12 and solvent evaporation 13,14 are used to grow macroscopic HgI 2 crystals with dimensions in millimeters or centimeters. However, few studies report HgI 2 NC growth.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and growth of HgI2 nanocrystals in a glass matrix: Heat treatment

Condeles

Silva

et al. 2014

Journal of Applied Physics

View full text Add to dashboard Cite

Articles you may be interested inGrowth of silicon quantum dots by oxidation of the silicon nanocrystals embedded within silicon carbide matrix AIP Advances 4, 107106 (2014); 10.1063/1.4897378 Glass viscosity dependant growth of CdS nanocrystals in silicate glass matrix AIP Conf. Proc. 1536, 57 (2013); 10.1063/1.4810098 Effect of post-deposition treatment on energy conversion efficiency of nanostructured CdS / Cu 2 S thin films AIP Conf. Proc. 1512, 752 (2013); 10.1063/1.4791256 Temperature dependent photoluminescence studies in Hg 0.2 Cd 0.8 Te nanorods synthesized by solvothermal method AIP Conf.Mercury iodide (HgI 2 ) nanocrystals (NCs) were successfully grown in a barium phosphate glass matrix synthesized by fusion. Growth control of HgI 2 NCs was investigated by Atomic Force Microscopy (AFM), Optical Absorption (OA), Fluorescence (FL), and X-ray diffraction (XRD). AFM images reveal the formation of HgI 2 nanocrystals in host glass matrix. HgI 2 NCs growth was evidenced by an OA and FL band red-shift with increasing annealing time. XRD measurements revealed the b crystalline phase of the HgI 2 nanocrystals. V C 2014 AIP Publishing LLC.

show abstract

Growth of mercuric iodide platelets for X-ray room temperature detectors in the HgI2–HI–H2O system

Cited by 14 publications

References 36 publications

Crystal Growth of α-HgI₂ by the Temperature Difference Method for High Sensitivity X-ray Detection

Crystal Growth of α-HgI₂ by the Temperature Difference Method for High Sensitivity X-ray Detection

Structure and SHG of the high pressure phase IV of HgBr2

Synthesis and growth of HgI2 nanocrystals in a glass matrix: Heat treatment

Contact Info

Product

Resources

About

Growth of mercuric iodide platelets for X-ray room temperature detectors in the HgI2–HI–H2O system

Cited by 14 publications

References 36 publications

Crystal Growth of α-HgI2 by the Temperature Difference Method for High Sensitivity X-ray Detection

Crystal Growth of α-HgI2 by the Temperature Difference Method for High Sensitivity X-ray Detection

Structure and SHG of the high pressure phase IV of HgBr2

Synthesis and growth of HgI2 nanocrystals in a glass matrix: Heat treatment

Contact Info

Product

Resources

About

Crystal Growth of α-HgI₂ by the Temperature Difference Method for High Sensitivity X-ray Detection

Crystal Growth of α-HgI₂ by the Temperature Difference Method for High Sensitivity X-ray Detection