Influence of external factors on photoluminescence of Ca(Al Ga1-)2S4:Eu2+ solid solutions

Тагиев, О. Б.; Asadov, E. G.; Tagiev, K. O.; Gadzhieva, G. S.; Naghiyev, T. G.

doi:10.1016/j.ssc.2021.114587

Cited by 25 publications

(3 citation statements)

References 22 publications

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“…The PL lines depicted in Figure 1 are mainly related to the Fermi level and defect states located in the center of the band gap. Photoluminescence spectra in this region (at 800-950nm) were also observed in our previous work [12][13][14][15][16][17][18][19][20][21][22][23][24].…”

Section: Resultssupporting

confidence: 82%

Photoluminescence and phonon spectrum studies of arsenide sulfide compound doped with rare earth elements

Asadullayeva,

Ahmedov,

Hadiyeva

et al. 2023

UNEC j. eng. appl. sci.

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The phonon spectrum and photoluminescence properties of (La2O3)0.05(As2S3)0.90(Er2O3)0.05 compound were studied in a broad aspect. The energy difference between the two-component maxima of photoluminescence located at the value of energy Е≈1.4eV was 41 meV, which corresponded to the energy of the most intense transverse optical (TO) phonon determined from the general radiation spectrum in the phonon spectrum region. In other words, the first photoluminescence line was observed simultaneously with the emission of a TO phonon with an energy of 41 meV. By changing the concentration of the erbium atom in different percentages in the infrared region of the spectrum and at the same time doping it with the lanthanum element, which plays the role of a sensitizer, a sharp increase in the intensity of photoluminescence was achieved in the intracentral (4J2/11-4J15/2) transition of the erbium atom. All these results show that the compound is suitable for wide application in various fields of optoelectronics.

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Section: Resultssupporting

confidence: 82%

Photoluminescence and phonon spectrum studies of arsenide sulfide compound doped with rare earth elements

Asadullayeva,

Ahmedov,

Hadiyeva

et al. 2023

UNEC j. eng. appl. sci.

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“…Применив соотношение зеркальной симметрии между спектрами излучения и возбуждения, мы определили значение энергии поглощения E abs . Энергии переходов поглощения f → d и излучения d → f могут быть определены согласно соотношениям [12][13][14]:…”

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Фотолюминесценция в композитах на основе поливинилденфторида и наполнителя CaGa-=SUB=-2-=/SUB=-S-=SUB=-4-=/SUB=-:Eu-=SUP=-2+-=/SUP=-

Тагиев¹,

Асадов²,

Казымова³

et al. 2023

Письма В Журнал Технической Физики

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The excitation and photoluminescence spectra of composites based on PVDF and filler CaGa2S4:Eu2+ were not measured at room temperature. The photoluminescence spectra were analyzed at different concentrations of Eu2+ ions and it was found that the position of the maximum of the PL spectra does not change with an increase in the content of Eu2+ ions in the compound, and the maximum of the PL spectrum in all percentages is ~550 nm with the electronic transition 4f 65d1 → 4f 75d.

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“…Applying the mirror symmetry relation between the emission and excitation spectra, we have determined absorption energy E abs . Energies of the absorption f → d and emission d → f transitions may be determined via the following relations [12][13][14]:…”

mentioning

confidence: 99%

Photoluminescence in composites based on polyvinylidene fluoride and filler CaGa-=SUB=-2-=/SUB=-S-=SUB=-4-=/SUB=-:Eu-=SUP=-2+-=/SUP=-

Tagiyev

Asadov

Kazymova

et al. 2023

Technical Physics Letters

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The excitation and photoluminescence spectra of composites based on PVDF and filler have been measured at room temperature. The photoluminescence spectra were analyzed at different concentrations of Eu2+ ions. It was found out that positions of PL spectra maxima do not change with an increase in the content of Eu2+ ions in the compound and remain ~ 550 nm at all percentages. Radiation with such a maximum is caused by the 4f65d1-> 4f75d electronic transition. Keywords: photoluminescence, excitation, rare earth element, phosphor, europium.

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Influence of external factors on photoluminescence of Ca(Al Ga1-)2S4:Eu2+ solid solutions

Cited by 25 publications

References 22 publications

Photoluminescence and phonon spectrum studies of arsenide sulfide compound doped with rare earth elements

Photoluminescence and phonon spectrum studies of arsenide sulfide compound doped with rare earth elements

Фотолюминесценция в композитах на основе поливинилденфторида и наполнителя CaGa-=SUB=-2-=/SUB=-S-=SUB=-4-=/SUB=-:Eu-=SUP=-2+-=/SUP=-

Photoluminescence in composites based on polyvinylidene fluoride and filler CaGa-=SUB=-2-=/SUB=-S-=SUB=-4-=/SUB=-:Eu-=SUP=-2+-=/SUP=-

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