Effect of iodine anions on the spectral characteristics of tin- activated potassium chloride single crystals

Kynev, K.; Tabakova, Veneta

doi:10.1088/0022-3719/4/9/027

Cited by 6 publications

(7 citation statements)

References 2 publications

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“…13) or A T and R. 20,26,29 The A T emission bands were observed at $2.8 eV in NaCl:Sn 2þ , 13 at $2.4 eV in KBr:Sn 2þ , 20 and at $2.3 eV in KI:Sn 2þ , 26,29 while the R (A X ) emission bands in these phosphors were observed in the red ($1.8 eV) 20,26,29 or green ($2.3 eV) region. 13 The PL properties of KCl:Sn 2þ were reported previously; [15][16][17][18] however, no clear R (or A X ) emission band has been observed in this phosphor to date. In the case of doping with the Pb 2þ ion, the A T and A X bands were observed in the sodium halides NaCl and NaBr, but only the A T band was observed in the potassium halides KCl and KBr.…”

Section: A A-and R-band Emissions In Kcl:sn 21supporting

confidence: 55%

“…However, only an A T emission band has been observed in melt-grown KCl:Sn 2þ phosphors. [15][16][17][18] In this study, not only the A T emission band but also the R emission band is clearly observed in the solution-grown KCl:Sn 2þ phosphors; however, the R emission band disappears after annealing at 400 C. The temperature dependences of the PL intensity, the PL excitation (PLE) spectrum, and the luminescence decay curve are reported in detail.…”

Section: Introductionmentioning

confidence: 78%

“…For comparison, the PL spectrum of a melt-grown KCl:Sn 2þ crystal taken from the literature (Ref. 15) is shown in Fig. 4 by the dashed line.…”

Section: A Structural Propertiesmentioning

confidence: 99%

“…4, we presented the room-temperature PL spectrum of the melt-grown KCl:Sn 2þ crystal in Ref. 15. The PL spectrum of our annealed KCl:Sn 2þ phosphor in Fig.…”

Section: B Effect Of Annealing On Pl Spectrummentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11] However, the analysis of the photoluminescence (PL) properties has not yet been completed owing to their structureless broadband spectra and unknown site symmetries in the host lattice. 12 There have been many studies on the PL properties of Sn 2þ -activated alkali halides, such as NaCl:Sn 2þ , 13,14 KCl:Sn 2þ , [15][16][17][18] KBr:Sn 2þ , 16,[19][20][21][22] and KI:Sn 2þ . 19,23,24 Unlike monovalent ions (In þ , Tl þ , etc.…”

Section: Introductionmentioning

confidence: 99%

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Optical properties of KCl:Sn2+ phosphors synthesized from aqueous KCl/SnCl2 solutions

Nara

Adachi

2011

Journal of Applied Physics

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KCl:Sn 2þ phosphors were synthesized from aqueous KCl/SnCl 2 solutions. Solvents with a molar ratio of KCl : SnCl 2 ¼ 1 : M (M ¼ 0 À 5) were dissolved in de-ionized water. The optical properties of the synthesized phosphors were investigated by photoluminescence (PL) analysis, PL excitation spectroscopy (PLE), and PL lifetime measurements. KCl:Sn 2þ phosphor synthesized with M ¼ 0.1 exhibited the strongest PL emission in the green (A T band) and red spectral regions (R band). The phosphors synthesized with M ! 1 were composites of various potassium chlorostannates and emitted light in the red spectral region (R band). Annealing the M ¼ 0.1 phosphor in dry N 2 resulted in a PL spectrum that was the same as those usually observed in melt-grown KCl:Sn 2þ phosphors (i.e., exhibiting only the A T emission band). Annealing also led to a change in the PL decay characteristic from a double exponential curve to a single exponential curve. The A T and R emission bands had nearly the same PLE spectra and were related to the deexcitation of the Sn 2þ (5s5p) ions in KCl.

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Section: A A-and R-band Emissions In Kcl:sn 21supporting

confidence: 55%

Section: Introductionmentioning

confidence: 78%

“…For comparison, the PL spectrum of a melt-grown KCl:Sn 2þ crystal taken from the literature (Ref. 15) is shown in Fig. 4 by the dashed line.…”

Section: A Structural Propertiesmentioning

confidence: 99%

“…4, we presented the room-temperature PL spectrum of the melt-grown KCl:Sn 2þ crystal in Ref. 15. The PL spectrum of our annealed KCl:Sn 2þ phosphor in Fig.…”

Section: B Effect Of Annealing On Pl Spectrummentioning

confidence: 99%