Luminescence and ultraviolet excitation spectroscopy of SrI2 and SrI2:Eu2+

Pankratov, V.; Попов, А. И.; Shirmane, L.; Kotlov, A.; Bizarri, Grégory; Bürger, A.; Bhattacharya, P.; Tupitsyn, E.; Rowe, Emmanuel; Buliga, Vladimir; Williams, Richard

doi:10.1016/j.radmeas.2013.02.022

Cited by 38 publications

(24 citation statements)

References 17 publications

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“…VUV excitation luminescence spectroscopy is especially a powerful tool for investigating wide band gap materials such as fluorides [27], iodides [28] and oxides [29][30][31][32]. The method was extended to studies of electronic excitations in semiconductor nanocrystals [33].…”

Section: Methodsmentioning

confidence: 99%

Vacuum ultraviolet excitation luminescence spectroscopy of few-layered MoS₂

Pankratov

Hoszowska

Dousse

et al. 2015

J. Phys.: Condens. Matter

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We report on vacuum ultraviolet (VUV) excited photoluminescence (PL) spectra emitted from a chemical vapor deposited MoS 2 few-layered film. The excitation spectrum was recorded by monitoring intensities of PL spectra at ~1.9 eV. A strong wide excitation band peaking at 7 eV was found in the excitation. The PL excitation band is most intensive at liquid helium temperature and completely quenched at 100 K. Through first-principles calculations of photoabsorption in MoS 2 , the excitation was explicated and attributed to transitions of electrons from p-and d-type states in the valence band to the d-and p-type states in the conduction band. The obtained photon-in/photon-out results clarify the excitation and emission behavior of the low dimensional MoS 2 when interacting with the VUV light sources.

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Section: Methodsmentioning

confidence: 99%

Vacuum ultraviolet excitation luminescence spectroscopy of few-layered MoS₂

Pankratov

Hoszowska

Dousse

et al. 2015

J. Phys.: Condens. Matter

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“…7), E V ¼ À5.34 eV is obtained. Next, one needs the exciton creation energy E ex in SrI 2 which is well established from different sources [12,[20][21][22]. We use 5.5 eV (225 nm) that applies to an exciton creation at about 10 K, as indicated with arrow 2 in Fig.…”

Section: Vacuum Referred Binding Energy Diagram Of the Lanthanide Ionmentioning

confidence: 99%

Luminescence and spectroscopic properties of Sm2+ and Er3+ doped SrI2

Alekhin

Awater

Biner

et al. 2015

Journal of Luminescence

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“…The experimental band gap of SrI 2 is still being refined, and seems to be converging to about 5.5 eV. Experimental and theoretical values of band gap since 2008 have been quoted as 3.7 eV estimated from absorption and luminescence spectra in thick samples [2], 4.5 eV calculated in DFT with Engel-Vosko GGA [26], 5.7 eV synchrotron luminescence excitation [27], !5.1 eV measured in transmission of a 100 mm crystal [28], and %5.5 eV deduced from the 1s exciton dip in synchrotron radiation luminescence excitation with estimated 0.26 eV exciton binding energy from dielectric constant [29].…”

mentioning

confidence: 99%

First principles calculations and experiment predictions for iodine vacancy centers in SrI₂

Williams

Åberg

2013

Physica Status Solidi (b)

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We present the electronic structure, lattice relaxation, and formation energies of iodine vacancy defects in SrI 2 for the oneelectron, two-electron, and ionized charge states. We use a local generalized gradient approximation as well as non-local hybrid functionals within the framework of density functional theory, as it is commonly accepted that the latter can improve accuracy of the band gap and hence relevant energy levels. Comparison is made to published results on chlorine vacancy defects in NaCl calculated with similar methods and functionals, and also to a recent first-principles study of one-and two-electron occupancy in MgO vacancy centers. Using the parameters that are calculable from first principles in SrI 2 as a starting point, we incorporate available experimental data and adaptations of simple models to predict a range of results that can help guide or interpret future experiments such as absorption energy, configuration coordinate curves, vibrational lineshape, thermal trap depth, and Mollwo-Ivey comparison to alkaline-earth fluorides.Charge density contour in the F center in SrI 2 .

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Luminescence and ultraviolet excitation spectroscopy of SrI2 and SrI2:Eu2+

Cited by 38 publications

References 17 publications

Vacuum ultraviolet excitation luminescence spectroscopy of few-layered MoS₂

Vacuum ultraviolet excitation luminescence spectroscopy of few-layered MoS₂

Luminescence and spectroscopic properties of Sm2+ and Er3+ doped SrI2

First principles calculations and experiment predictions for iodine vacancy centers in SrI₂

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Luminescence and ultraviolet excitation spectroscopy of SrI2 and SrI2:Eu2+

Cited by 38 publications

References 17 publications

Vacuum ultraviolet excitation luminescence spectroscopy of few-layered MoS2

Vacuum ultraviolet excitation luminescence spectroscopy of few-layered MoS2

Luminescence and spectroscopic properties of Sm2+ and Er3+ doped SrI2

First principles calculations and experiment predictions for iodine vacancy centers in SrI2

Contact Info

Product

Resources

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Vacuum ultraviolet excitation luminescence spectroscopy of few-layered MoS₂

Vacuum ultraviolet excitation luminescence spectroscopy of few-layered MoS₂

First principles calculations and experiment predictions for iodine vacancy centers in SrI₂