Luminescent properties of Pb2+- and Mn2+-activated CdI2 crystals

Novosad, S. S.; Novosad, I. S.; Pashuk, I. P.; Kostyk, L.

doi:10.1134/s0020168507080110

Cited by 4 publications

(16 citation statements)

References 6 publications

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“…The results of CdBr 2 : AgCl,PbBr 2 optical studies confirm that photoinduced absorption in this material (as well as in CdBr 2 : AgCl [15,16]) is caused by the photodissociation of the matrix [11] and by photochromic transformations of silver centres [15,16]. Considering the results of [20][21][22][23] one can assume that in case of the activation of melt-grown CdBr 2 with AgCl, (Ag + Cd ) − impurity, single-charge acceptor centres are formed as the dopant: Ag + ion substitutes Cd 2+ ion in the regular lattice sites.…”

Section: Discussionsupporting

confidence: 55%

“…In [16] it was assumed, that in low-doped photochromic CdBr 2 : 0.02 mol % AgCl {(Ag Au + crystals were discussed in our previous reports [11,12,23].…”

Section: Discussionmentioning

confidence: 99%

“…Such structural arrangement, on the one hand, determines strongly anisotropic mechanical, electrical and optical properties and, on the other hand, provides favorable conditions for the creation of impurity centres localized at different crystallographic lattice sites. CdBr 2 crystals doped with copper and silver impurities exhibit photochromic properties [9][10][11][12][13][14][15][16][17]. Therefore, it is interesting to study optical and luminescent properties of photochromic crystals derived from cadmium bromide and investigate electronic processes that are responsible for the photochromic behavior.…”

Section: Introductionmentioning

confidence: 99%

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Time dependence of the luminescence intensity in CdBr2: AgCl,PbBr2 crystals under N2-laser excitation at room temperature

Bolesta

Kalivoshka

Karbovnyk

et al. 2014

Materials Science-Poland

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Results of optical-luminescence studies of polydoped photochromic CdBr2: AgCl,PbBr2 crystals are presented. It is shown that the luminescence decrease vs. time under N2-laser excitation in the range of A-band of Pb2+ absorption is due to photochemical reactions. The empirical model describing the decrease of the luminescence related to silver impurities due to photochemical processes is suggested. Model parameters (trapping cross-section — σ — and the amount of centres destroyed by irradiation — β) were determined using the comparative analysis of experimental and calculated luminescence decay curves.

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Section: Discussionsupporting

confidence: 55%

“…In [16] it was assumed, that in low-doped photochromic CdBr 2 : 0.02 mol % AgCl {(Ag Au + crystals were discussed in our previous reports [11,12,23].…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Time dependence of the luminescence intensity in CdBr2: AgCl,PbBr2 crystals under N2-laser excitation at room temperature

Bolesta

Kalivoshka

Karbovnyk

et al. 2014

Materials Science-Poland

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“…The structure types of MnBr 2 and MnI 2 are C 19 and C 6, respectively [7]. The luminescence of Mnactivated cadmium and calcium halide crystals, peaked in the red spectral region, is commonly attributed to electron-phonon transitions in Mn 2+ -related centers [3][4][5][6]. Under excitation by a nitrogen laser, CdBr 2 :Mn 2+ exhibits low-temperature luminescence peaked around 600 nm [9,10].…”

Section: Inbtroductionmentioning

confidence: 99%

“…The optical and luminescent properties of Mn-doped layered cadmium and calcium halide crystals were investigated earlier mainly at high temperatures [1][2][3][4][5][6]. The results made it possible to produce efficient scintillators for photodiode scintillation detectors [1][2][3].…”

Section: Inbtroductionmentioning

confidence: 99%

Low-temperature luminescent properties of Mn-activated layered cadmium and calcium halides

et al. 2005

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The luminescent properties of Mn-activated CdCl 2 , CdBr 2 , CdI 2 , and CaI 2 crystals are studied in the range 4.2-200 K. The photo-and roentgenoluminescence spectra of the crystals show red emission bands due to the Mn activator. The excitation spectra and Mn luminescence kinetics are interpreted in terms of the crystal-field theory with consideration for electron paramagnetic resonance data. The red luminescence of the crystals at 4.2 K is attributed to the 4 T 1 g ( 4 G ) 6 A 1 g ( 6 S ) electron-phonon transitions of Mn 2+ . The Racah parameters B and C are determined. The origin of the 600-nm luminescence in CdBr 2 :Mn 2+ under excitation with a nitrogen laser and xenon lamp at 320-360 nm in the range 4.2-90 K is discussed.

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Effect of Bi Doping on the Optical Properties of CdI2

2005

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The effect of Bi impurity on the optical absorption and roentgeno-, photo-, and thermoluminescence spectra of CdI 2 crystals grown by the Bridgman-Stockbarger method is studied. CdI 2 activation with BiI 3 produces a number of absorption bands related to electronic transitions of Bi 3+ . Bi produces no emission centers in CdI 2 . The 550-to 560-nm luminescence of CdI 2 is due to the radiative recombination of self-trapped anion excitons. The observed changes in spectral distribution and the reduction in light yield upon CdI 2 activation with Bi 3+ are mainly due to the reabsorption of emission from native centers by activator centers. Under x-ray excitation, CdI 2 :Bi 3+ accumulates a small light sum at shallow trap levels related to native defects.

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Luminescent properties of Pb2+- and Mn2+-activated CdI2 crystals

Cited by 4 publications

References 6 publications

Time dependence of the luminescence intensity in CdBr2: AgCl,PbBr2 crystals under N2-laser excitation at room temperature

Time dependence of the luminescence intensity in CdBr2: AgCl,PbBr2 crystals under N2-laser excitation at room temperature

Low-temperature luminescent properties of Mn-activated layered cadmium and calcium halides

Effect of Bi Doping on the Optical Properties of CdI2

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