Synchrotron radiation studies on luminescence of Eu2+-doped LaCl3 microcrystals embedded in a NaCl matrix

Savchyn, P.; Vistovskyy, V.; Pushak, A.S.; Voloshinovskii, А.; Gektin, A.; Pankratov, V.; Попов, А. И.

doi:10.1016/j.nimb.2011.11.024

Cited by 23 publications

(9 citation statements)

References 38 publications

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“…We found that the wavelength of the light radiated by this series of materials was always in the range of 450~620 nm when excited, indicating that these materials emit many lights with several fixed wavelengths and different intensities. Similar studies can be found in [21]. The excited energy states and photoluminescence efficiencies of many crystals were obtained by studying the photoluminescence spectra pumped by many lights.…”

Section: Resultsmentioning

confidence: 54%

Temperature-Dependent Photoluminescence of Manganese Halide with Tetrahedron Structure in Anti-Perovskites

Xia

Huang

et al. 2021

Nanomaterials

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The temperature-dependent photoluminescence (PL) properties of an anti-perovskite [MnBr4]BrCs3 sample in the temperature range of 78–500 K are studied in the present work. This material exhibits unique performance which is different from a typical perovskite. Experiments showed that from room temperature to 78 K, the luminous intensity increased as the temperature decreased. From room temperature to 500 K, the photoluminescence intensity gradually decreased with increasing temperature. Experiments with varying temperatures repeatedly showed that the emission wavelength was very stable. Based on the above-mentioned phenomenon of the changing photoluminescence under different temperatures, the mechanism is deduced from the temperature-dependent characteristics of excitons, and the experimental results are explained on the basis of the types of excitons with different energy levels and different recombination rates involved in the steady-state PL process. The results show that in the measured temperature range of 78–500 K, the steady-state PL of [MnBr4]BrCs3 had three excitons with different energy levels and recombination rates participating. The involved excitons with the highest energy level not only had a high radiative recombination rate, but a high non-radiative recombination rate as well. The excitons at the second-highest energy level had a similar radiative recombination rate to the lowest energy level excitons and a had high non-radiative recombination rate. These excitons made the photoluminescence gradually decrease with increasing temperature. This may be the reason for this material’s high photoluminescence efficiency and low electroluminescence efficiency.

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Section: Resultsmentioning

confidence: 54%

Temperature-Dependent Photoluminescence of Manganese Halide with Tetrahedron Structure in Anti-Perovskites

Xia

Huang

et al. 2021

Nanomaterials

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“…This experimental set-up is a unique tool for investigations of different types of wide band gap materials [29][30][31][32][33][34]. Synchrotron radiation intensity was 10 12 photons per second.…”

Section: Methodsmentioning

confidence: 99%

Long-term evolution of luminescent properties in CdI2 crystals

Karbovnyk

Bolesta

Rovetskyi

et al. 2016

Low Temperature Physics

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Fresh and aged melt-grown or gas-phase grown CdI 2 crystals are studied by means of low-temperature photoluminescence spectroscopy. Noticeable transformations of emission spectra are observed after long-term aging. The formation of nanostructures containing cadmium oxide and cadmium hydroxide as well as the changes in local surrounding of iodine atoms and the possible growth of polytypic modifications of CdI 2 are taken into account when considering the diversity of optical spectra. PACS: 78.55.-m Photoluminescence, properties and materials; 78.67.-n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures.

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“…VUV luminescence spectroscopy is a powerful tool for the study of electronic structure in wide band gap fluorides [12,15], chlorides [16], bromides [17], iodides [18], oxides [19,20,21] and even nanocrystalline semiconductor structures [22,23] and two-dimensional systems [24]. Due to its tunability and high intensity, synchrotron radiation is the best excitation source in VUV range.…”

Section: Photoluminescence Measurements Under Vuv Excitationmentioning

confidence: 99%