Fabrication of ZnSe:Te by Hot Pressing Techniques

On the Optical Response of Tellurium Activated Zinc Selenide ZnSe:Te Single Crystal

“…Revisiting the remark expressed in the introductory section, that the material's light yield varies within a broad interval [18], one can note that it still remains higher than the values reported for BGO and GSO:Ce, even in its "least efficient" version (see Table 1, footer note). This is verified by the AE-kVp graph, even though ZnSe: Te has lower density and effective atomic number than the other ones.…”

“…As for the light output, values vary within a broad interval, from 2.8•10 4 photons/MeV up to a maximum of 8 × 10 4 ph/MeV. In their analysis, Cool et al [18] attribute this fact to the self-absorption within the material, something that depends on the quality of the specific crystal.…”

“…The combination of high efficiency, low effective atomic number, and red light emission comes in beneficial contrast to the higher effective atomic numbers and different wavelength emissions of CsI: Tl, cadmium tungstate, CdWO 4 , and gadolinium oxysulfide, Gd 2 O 2 S (GOS) [18]. Another convenient feature is its similar atomic number to that of copper; a widely used filter for the lower energy part of X-ray spectra.…”

The effect of compaction and heat treatment on phase Transitions of ZnSe(Te) bulk material made of nanopowder

“…The technique of inert gas condensation was applied to produce nanocrystalline ZnSe thin films [6]. Recent studies concerning production of ZnSe:Te ceramics [7] consider fabrication of the bulk material using uniaxial cold and hot pressing and hot isostatic pressing. The precursor powder was of quite high chemical purity (99.999%), average particle size was about 20 mm.…”

“…Being free of many drawbacks of the powder technique [7], this nanopowder compaction technique provides fabrication of highly dense II-VI semiconductor ceramics due to higher compaction ability of the nanopowders compared to micropowders [8]. It is known that the yield of luminescence depends on the quality of the crystal.…”