X-ray luminescence of cerium-doped polv crystalline zinc sulfide obtained by self-propagating high-temperature synthesis

Kozitskii, S. V.; Voloshinovskii, А.; Plasarskii, V. P.

doi:10.1007/bf02606540

Cited by 3 publications

(2 citation statements)

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“…For comparison, CsSnCl 3 exhibits sharper emission bands, whose maximum depends both on temperature (due to the phase transition from 0D-monoclinic to 3D-cubic structure at 117 °C) as well as the presence of humidity . It is interesting to note that at −196 °C with excitation at 250 nm the material shows a magenta-like luminescence (Figure a inset), and it is observed in Figure a-iii as a broad peak centered at 553 nm, beyond the second order of the 250 nm excitation line.…”

Section: Resultsmentioning

confidence: 96%

Synthesis, Crystal Structure, and Broadband Emission of (CH₃)₃SSnCl₃

et al. 2022

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We report here on the synthesis, crystal structure, optoelectronic and vibrational properties, as well as the DFT calculations of the novel trimethylsulfonium tin trichloride (CH 3 ) 3 SSnCl 3 . The air-stable compound is prepared by reacting the (CH 3 ) 3 SCl and SnCl 2 solid precursors in evacuated silica tubes at 100 °C. According to powder X-ray diffraction and Rietveld refinement, it crystallizes at room temperature in the orthorhombic space group Pbca (No. 61) with isolated pyramids of [SnCl 3 ] − and (CH 3 ) 3 S + units. UV−vis reflectance and photoluminescence spectroscopies reveal a direct energy band gap of 3.85 eV, accompanied by a broad Stokes-shifted luminescence signal. Photoexcitation of the compound at room temperature and at −196 °C results in broadband luminescence with weak magenta emission centered at 400 nm using an excitation at 250 nm. First principal calculations provide insight into the physical properties through the electron and phonon density of states. Multitemperature Raman spectroscopy and differential scanning calorimetry reveal a reversible phase transition at ca. 70 °C that affects the vibrational modes of the [SnCl 3 ] − . By dissolving (CH 3 ) 3 SSnCl 3 in dimethylformamide in ambient air for a week, oxidation of tin occurs in the "defect" perovskite ((CH 3 ) 3 S) 2 SnCl 6 . The crystal structure of ((CH 3 ) 3 S) 2 SnCl 6 is also determined with high accuracy via single-crystal X-ray diffraction (cubic space group Pa-3 (No. 205)) and compared with (CH 3 ) 3 SSnCl 3 via Hirshfeld surface analysis.

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Section: Resultsmentioning

confidence: 96%

Synthesis, Crystal Structure, and Broadband Emission of (CH₃)₃SSnCl₃

et al. 2022

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“…The role of oxygen in ZnS luminescence and scintillation should thus be carefully considered. Similarly, work on cerium-doping in ZnS suggested that it was the oxygen impurity from CeF 3 additions that led to increased light output [42]. Recently there has been renewed interest in rare-earth doping of ZnS nanoparticles [43], and studies showing enhanced light output with nanoparticles may in fact be due to surface states involving oxygen [44] in combination with rare earth or traditional transition metal (silver, copper) dopants in ZnS [39].…”

Section: Application To Data From Scintillating Samplesmentioning

confidence: 99%

Scintillation and luminescence in transparent colorless single and polycrystalline bulk ceramic ZnS

McCloy

Bliss

Miller

et al. 2015

Journal of Luminescence

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ZnS:Ag is a well-known, extremely bright scintillator used in powder form for α-particle detection and, mixed with powdered LiF, for thermal neutron detection. Recently, we discovered some colorless and transparent commercial bulk single-crystal and polycrystalline (chemical vapor-deposited) ZnS forms that scintillate in response to α-particles. The scintillation light transmits through the sample thickness (millimeters), challenging the commonly held assumption that ZnS is opaque to its own scintillation light. Individual α-particle events were imaged in space and time using a charged-particle camera originally developed for medical imaging applications. Photoluminescence (PL) and PL excitation show that scintillating bulk ZnS likely depends on different electronic defects than commercial ZnS powder scintillators. These defects, associated with copper and oxygen, are discussed in relation to PL results and extensive literature assessment. Commercial transparent ZnS is routinely produced by chemical vapor deposition to sizes larger than square meters, enabling potentially novel radiation detection applications requiring large, thick apertures.

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