Luminescent characterization of lead tungstate crystals doped with europium, praseodymium, and ytterbium ions

Antonenko, O.I.; Chukova, O.; Hizhnyi, Yu.; Nedilko, S.; Scherbatskyi, V.

doi:10.1016/j.optmat.2005.09.009

Cited by 19 publications

(23 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] In particular, the undoped PWO crystal has attracted much interest because of plans to use it as a scintillation detector at the Large Hadron Collider in CERN. 4,6,10,[16][17][18][19] Nevertheless, the understanding of PWO spectral behavior is still debated and some problems are left unsolved.…”

Section: Introductionmentioning

confidence: 99%

Contribution of structural order-disorder to the green photoluminescence ofPbWO4

et al. 2007

View full text Add to dashboard Cite

An intense and broad visible photoluminescence ͑PL͒ band was observed at room temperature in structurally disordered PbWO 4 thin films. The scheelite lead tungstate ͑PbWO 4 ͒ films prepared by the polymeric precursor method and annealed at different temperatures were structurally characterized by means of x-ray diffraction and atomic force microscopy analysis. Quantum-mechanical calculations showed that the local disorder of the network modifier ͑Pb͒ has a very important role in the charge transfer involved in the green PL emission. The experimental and theoretical results are in good agreement, both indicating that the generation of the intense visible PL band is related to simultaneous structural order and disorder in the scheelite PbWO 4 lattice.

show abstract

Section: Introductionmentioning

confidence: 99%

Contribution of structural order-disorder to the green photoluminescence ofPbWO4

et al. 2007

View full text Add to dashboard Cite

show abstract

“…The wide unstructured bands observed in the low temperature luminescence spectra in the green-orange and red spectral regions can be ascribed by their properties and maximum positions to emission of the undoped PWO matrix [4][5][6][7][8][9] (Figs. 1, 2).…”

Section: Discussionmentioning

confidence: 99%

“…Adding the RE 3+ impurity leads to a redistribution of the relative intensities of the noted emission bands and to decrease of total intensity of the defect luminescence. Various mechanisms (at least two) of compensation of role of defects by RE ions in the PWO matrix are realized, that causes decrease of the green-orange and red luminescence in the RE-doped PWO crystals [4][5][6][7][8][9].…”

Section: Discussionmentioning

confidence: 99%

“…Conditions of the crystal growth as well as details of registration of the spectra are described in [4].…”

Section: Methodsmentioning

confidence: 99%

“…Confirmation of such assumption requires data about energy levels actual in processes of excitation, relaxation, emission and energy transfer. Some peculiarities of the impurity RE ions effects, and of the Eu 3+ ions among them, on the centers of intrinsic emission of the PWO crystals have been studied by us recently [4,5]. In the present paper we carried out detail investigation of spectral-luminescent properties of the PWO crystals doped with the Eu 3+ ions.…”

mentioning

confidence: 89%

See 2 more Smart Citations

Luminescent spectroscopy of lead tungstate crystals doped with europium ions

Chukova

Nedilko

Scherbatskyi

2007

Phys. Status Solidi (c)

Self Cite

View full text Add to dashboard Cite

Spectral-luminescent properties of the lead tungstate crystals doped with the Eu 3+ ions were investigated in a wide temperature range at different excitation and registration wave lengths. The spectra consist of both weak wide nonstructural bands of the matrix emission and narrow spectral lines caused by inner f-f electron transitions in the impurity Eu 3+ ions. The analysis and interpretation of spectral lines observed in excitation and luminescence spectra have shown formation of at least two different types of luminescent centers on the basis of the Eu 3+ ions in the PbWO 4 crystals. These two types of centers are considered as caused by arrangement of the impurity Eu 3+ ions in Pb sites as well as in W sites of the host matrix.1 Introduction Improvement of scintillation characteristics of the lead tungstate crystals PbWO 4 (PWO), in particular, decreasing of decay time of scintillation response is known to can be achieved by special implantation of the crystals with impurity ions of rare earth (RE) elements. These impurities also significantly improve such characteristics the PWO crystals as transmission in the near UV region and radiation hardness [1][2][3]. Effects of the impurity RE ions on spectroscopic and scintillation characteristics of the PWO crystals are well known, but physical mechanisms of the noted effects are still under discussion. In particular, decreasing of decay time of luminescence at x-ray excitation of the PWO crystals doped with the Eu 3+ ions was ascribed as a result of excitation energy transfer from matrix to the Eu

show abstract

Thermal annealing behavior of fluorescence of Pr³⁺‐doped lead tungstate single crystal

Xiong

Huang

Zhu

2011

Physica Status Solidi (a)

View full text Add to dashboard Cite

The effects of thermal annealing treatment on the spectroscopic properties of Pr3+‐doped PbWO4 crystals were discussed in detail. The polarized absorption spectra, polarized fluorescence spectra, and fluorescence decay curves of main emission manifolds of the as‐grown and annealed Pr3+‐doped PbWO4 crystals were measured at room temperature and analyzed. Thermal annealing treatment can diminish most defect centers related to oxygen vacancies and thermal stress. The results demonstrate that thermal annealing treatment can exert a distinct influence on the spectroscopic properties of Pr3+: PbWO4 crystals as promising phosphors and laser materials.

show abstract

Luminescent characterization of lead tungstate crystals doped with europium, praseodymium, and ytterbium ions

Cited by 19 publications

References 18 publications

Contribution of structural order-disorder to the green photoluminescence ofPbWO4

Contribution of structural order-disorder to the green photoluminescence ofPbWO4

Luminescent spectroscopy of lead tungstate crystals doped with europium ions

Thermal annealing behavior of fluorescence of Pr³⁺‐doped lead tungstate single crystal

Contact Info

Product

Resources

About

Luminescent characterization of lead tungstate crystals doped with europium, praseodymium, and ytterbium ions

Cited by 19 publications

References 18 publications

Contribution of structural order-disorder to the green photoluminescence ofPbWO4

Contribution of structural order-disorder to the green photoluminescence ofPbWO4

Luminescent spectroscopy of lead tungstate crystals doped with europium ions

Thermal annealing behavior of fluorescence of Pr3+‐doped lead tungstate single crystal

Contact Info

Product

Resources

About

Thermal annealing behavior of fluorescence of Pr³⁺‐doped lead tungstate single crystal