Photoluminescence of Pr3+-, Nd3+- and Ni2+-doped TeO2–ZnO–WO3–TiO2–Na2O glasses

Lakshminarayana, G.; Yang, Hucheng; Qiu, Jianrong

doi:10.1016/j.jallcom.2008.07.083

Cited by 47 publications

(11 citation statements)

References 38 publications

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“…Due to similarity of the absorption spectra of TWPLa:Pr and TWPLu:Pr glasses (see Fig. 2), it is not surprising that the values of the J-O intensity parameters for both systems are also similar and comparable with those obtained for other tellurite glasses [27,28]. Determined J-O parameters have been used to estimate the radiative transition rates W , luminescence branching ratios β and the total radiative lifetimes τ of Pr 3+ excited states, and especially those of the 1 D 2 and 3 P 0 states that can be compared with the experimental data obtained from photoluminescence (PL) measurements.…”

Section: Resultssupporting

confidence: 67%

Spectroscopic properties of the Pr3+ ion in TeO2-WO3-PbO-La2O3 and TeO2-WO3-PbO-Lu2O3 glasses

Burtan¹,

Sitarz²,

Lisiecki³

et al. 2014

Open Physics

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Abstract:The goal of this work was to investigate the spectroscopic properties of Pr 3+ ions, embedded in two different tellurite glass matrices, TeO 2 -WO 3 -PbO-La 2 O 3 and TeO 2 -WO 3 -PbO-Lu 2 O 3 . The absorption and fluorescence spectra have been recorded and analyzed in terms of the Judd-Ofelt theory along with the luminescence decay of the 3 P 0 and 1 D 2 levels of the Pr 3+ ion. The spectroscopic studies were completed with ellipsometric measurements providing the dispersion relation of the refractive index of the investigated glasses.

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Section: Resultssupporting

confidence: 67%

Spectroscopic properties of the Pr3+ ion in TeO2-WO3-PbO-La2O3 and TeO2-WO3-PbO-Lu2O3 glasses

Burtan¹,

Sitarz²,

Lisiecki³

et al. 2014

Open Physics

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“…Besides having a unique structure [3][4][5], tellurite glasses also have good mechanical strength and chemical durability [6][7][8][9][10], low melting temperature [10], large linear [5,11,12] and nonlinear refractive indices [1,9,11] and good optical transmission at infrared [13,14] and visible wavelength [5,12,[15][16][17]. These properties make tellurite glasses good candidates for development of optical devices [5][6][7]18].…”

Section: Introductionmentioning

confidence: 99%

Effects of concurrent TeO2 reduction and ZnO addition on elastic and structural properties of (90−x)TeO2–10Nb2O5–(x)ZnO glass

Mohamed

Yahya

Deni

et al. 2010

Journal of Non-Crystalline Solids

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Niobium-containing tellurite glass with starting composition of (90 − x)TeO 2 -10Nb 2 O 5 -(x)ZnO (x =0-15 mol%) have been prepared by melt-quenching method and the effect of reduction of TeO 2 with simultaneous increase in ZnO on elastic properties was studied. Ultrasonic longitudinal and shear velocity showed initial decrease of 3.52% and 2.37%, respectively, at x = 5 mol%. For x N 5 mol%, longitudinal velocity showed weak recovery but shear velocity showed steady recovery with ZnO and recorded 0.95% increase in value at x =15 mol% compared to x =0 sample. Shear and Young's moduli recorded similar drop at x = 5 mol% followed by strong recovery at x N 5 mol%, while longitudinal and Bulk modulus showed weak and no recovery, respectively, with x. Infrared (IR) absorption spectra showed increase in intensity of NbO 6 -assigned peak accompanied by increase in intensity of ZnO 4 tetrahedra and TeO 4 trigonal bipyramid (tbp) assigned peaks indicating formation of both non-bridging oxygen, NBO and bridging oxygen, BO, respectively, with addition of ZnO. The initial drop in ultrasonic velocity and related elastic moduli observed at x = 5 mol% indicates weakening of network rigidity of the glass system due to structural modification as a direct effect of TeO 2 reduction and existence of NBO. However, further replacement of TeO 2 by ZnO at x N 5 mol% contributed to increase in BO causing rigidity of the glass network to improve. In addition, hardness, H, was observed to increase with ZnO indicating increase in connectivity of the glass network while Poisson's ratio, σ, decreased indicating increase in cross-link density of the glass system. The combined results of ultrasonic velocity and IR absorption spectra suggest that the role of TeO 2 is very critical in the ternary glass system as, although ZnO addition showed improved rigidity due to recovery of shear modulus, the weakening of longitudinal and Bulk moduli indicates ZnO is not fully effective as glass former in place of TeO 2 .

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“…The PL intensity of the doped TiO 2 is lower than the undoped TiO 2 . It is well known that PL spectrum of nanostructure materials is related to its transfer behavior of photo-induced electrons and holes, reflecting the separation and recombination of charge carriers [25][26][27]. For the N-doped TiO 2 , its PL intensity is the weaker among the four samples.…”

Section: Resultsmentioning

confidence: 96%

Characteristics of doped TiO2 photocatalysts for the degradation of methylene blue waste water under visible light

Liu

Wang

Chu

et al. 2010

Journal of Alloys and Compounds

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Photoluminescence of Pr3+-, Nd3+- and Ni2+-doped TeO2–ZnO–WO3–TiO2–Na2O glasses

Cited by 47 publications

References 38 publications

Spectroscopic properties of the Pr3+ ion in TeO2-WO3-PbO-La2O3 and TeO2-WO3-PbO-Lu2O3 glasses

Spectroscopic properties of the Pr3+ ion in TeO2-WO3-PbO-La2O3 and TeO2-WO3-PbO-Lu2O3 glasses

Effects of concurrent TeO2 reduction and ZnO addition on elastic and structural properties of (90−x)TeO2–10Nb2O5–(x)ZnO glass

Characteristics of doped TiO2 photocatalysts for the degradation of methylene blue waste water under visible light

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