Photoluminescence properties of the ZnO–CdO–TeO2 system doped with the Tb3+and Yb3+ ions

Ruvalcaba-Cornejo, C.; Flores-Acosta, M.; Zayas, Ma. E.; Lozada‐Morales, R.; Palomino-Merino, R.; Espinosa, J.E.; Portillo-Moreno, O.; Martínez-Juárez, J.; Zelaya-Ángel, O.; Tomás, S.A.; Soto, Alicia

doi:10.1016/j.jlumin.2007.07.004

Cited by 10 publications

(9 citation statements)

References 20 publications

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“…matrix containing ytterbium and terbium [32,33], neodymium [34], and europium ions [35] are reported.…”

Section: Results Of the Photoacoustic And Photoluminescence Spectra Omentioning

confidence: 99%

“…Yb118, Yb127, and Yb136 glasses display the pattern of an amorphous structure, and small particles of CdTeO 3 crystals are observed in the sample Yb118, see Refs. [32,33].…”

Section: Xrd Results On Zno-cdo-teo 2 :Rec Glassesmentioning

confidence: 99%

“…The E g is estimated, its value was 3.51 eV for Tb118 and 3.6 eV for Tb127. In both cases, Figures 17 and 18, the value E g is limited in the interval (3.47, 3.60) eV, which is very near of E g = 3.9 eV, the bandgap of CdTeO 3 [32]. Figure 19 shows the PA spectra of the glasses doped with Nd…”

Section: Photoacoustic Spectramentioning

confidence: 90%

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Luminescence in Rare Earth Ion‐Doped Oxide Compounds

Cornejo¹

2016

Luminescence - An Outlook on the Phenomena and Their Applications

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This chapter focuses on the study on luminescent materials, which consist of oxide compounds (host material) and rare earth ions (as the activator) in the valence state, mostly 3+. The first part begins with a background study about the luminescence phenomenon, its stages, and the configurational coordinate diagram. Then, we review the notation often used for rare earth ions, such as the term symbols associated with the energy levels of the ground state. Lastly on the first part, we establish a relationship between the configurational coordinate model and the electronic transitions of such ions. The second part shows the photoluminescence results in some oxide compound materials doped with rare earth ions that have been reported in research articles with potential applications.

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“…matrix containing ytterbium and terbium [32,33], neodymium [34], and europium ions [35] are reported.…”

Section: Results Of the Photoacoustic And Photoluminescence Spectra Omentioning

confidence: 99%

“…Yb118, Yb127, and Yb136 glasses display the pattern of an amorphous structure, and small particles of CdTeO 3 crystals are observed in the sample Yb118, see Refs. [32,33].…”

Section: Xrd Results On Zno-cdo-teo 2 :Rec Glassesmentioning

confidence: 99%

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Luminescence in Rare Earth Ion‐Doped Oxide Compounds

Cornejo¹

2016

Luminescence - An Outlook on the Phenomena and Their Applications

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“…and Yb 3? ions [29], N-doped CdO [30], cerium, europium, Fe and Lidoped CdO nanocrystalline materials [31][32][33][34] shows various changes in their semiconductor properties. Thou there is a report available on Sm doped CdO thin films [35], a systematic study is yet to be reported in synthesising Sm doped CdO nanopowders by simple precipitation method.…”

Section: Introductionmentioning

confidence: 99%

Sm doping effect on structural, morphological, luminescence and antibacterial activity of CdO nanoparticles

Xavier

Ravichandran

Ravichandran³

et al. 2016

J Mater Sci: Mater Electron

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Undoped cadmium oxide along with samarium doped CdO are synthesized by simple soft precipitation method. Resulting precursor was calcined at 400°C for 2 h. As a result of heating, a pure material was produced. The obtained compound possesses a cubic crystalline structure at nanoscale. Also, FESEM image showed that the resulting material is composed of nanoparticles and its size decreases with increase of Sm doping relative with the particle size calculated from XRD. The photoluminescence shows the emission of violet and blue colour peaks and the peak at 468 nm which is responsible for a better antibacterial activity. The synthesized nanopowders are subjected to two different gram positive (Staphylococcus aureus and Enterococcus faecalis) and two different gram negative (Escherichia coli and Klebsiella pneumoniae) bacterial strains respectively. It is noted that there are high activity of the Sm doped CdO towards gram negative bacteria.

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“…Besides, CdO shows very high electrical conductivity even without doping due to the existence of shallow donors caused by intrinsic interstitial cadmium atoms and oxygen vacancies [9]. In previous studies, the synthesis of Sn-doped CdO thin films [10], Bi 3+ -doped CdO thin films by sol-gel spin coating method [11], copper-doped CdO nanostructures [12], ZnO-doped CdO materials [13], titanium-doped CdO thin films [14], ZnO-CdO-TeO 2 system doped with the Tb 3+ and Yb 3+ ions [15], N-doped CdO [16], samarium-, cerium-, europium-, Fe-, and Li-doped CdO nanocrystalline materials [17][18][19][20][21], In-doped CdO films [22], fluorine-doped CdO [23], gallium-doped CdO thin films [24], Gd-doped CdO thin films with different method, dopant amount and structural morphology [25], Li-Ni co-doped CdO thin films [18], aluminum-doped CdO thin films [26], fluorine-doped CdO Films [27] have been reported.…”

Section: Introductionmentioning

confidence: 99%

Sol–gel synthesis, characterization, and optical properties of Gd3+-doped CdO sub-micron materials

et al. 2013

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Highly crystalline Gd 3+ -doped cadmium oxide micro-structure was synthesized by calcining the obtained precursor of a sol-gel reaction. The reaction was carried out with cadmium nitrate (Cd(NO 3 ) 2 ·4H 2 O), gadolinium oxide, and ethylene glycol (C 2 H 6 O 2 ) reactants without any additives at 80°C for 2 h. The resulting gel was calcined at 900°C with increasing temperature rate of 15°C/min for 12 h in a furnace. As a result of heating, the organic section of the gel was removed, and the Gd 3+ -doped cadmium oxide micro-structure was produced. The obtained compound from the sol-gel technique possesses a cubic crystalline structure at a micro scale. XRD study indicates that the obtained Gd 3+-doped CdO has a cubic phase. Also, the SEM images showed that the resulting material is composed of particles with cluster structure. Also, FT-IR spectroscopy was employed to characterize the Gd 3+ -doped CdO micro-structures.

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Photoluminescence properties of the ZnO–CdO–TeO2 system doped with the Tb3+and Yb3+ ions

Cited by 10 publications

References 20 publications

Luminescence in Rare Earth Ion‐Doped Oxide Compounds

Luminescence in Rare Earth Ion‐Doped Oxide Compounds

Sm doping effect on structural, morphological, luminescence and antibacterial activity of CdO nanoparticles

Sol–gel synthesis, characterization, and optical properties of Gd3+-doped CdO sub-micron materials

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