Characterization of Al2O3:Eu3+ Luminescent Coatings Prepared by Spray Pyrolysis Technique

Martínez, Eduardo D.; García, M.; Ramos-Brito, F.; Álvarez-Fregoso, O.; Lopez, S.; Granados, Sánchez; Chávez-Ramírez, J.; M., R. Martínez; Falcony, C.

doi:10.1002/1521-3951(200007)220:1<677::aid-pssb677>3.0.co;2-y

Cited by 18 publications

(15 citation statements)

References 4 publications

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“…The amorphous structure of alumina in the temperature range below 550 • C is ordinary 5,66,67 even with doping material. 68 Meanwhile the presence of nickel oxide characteristic peaks is reported at higher substrate temperature (>350 • C) 1 and lower molarity (<0.1 M). 10 Therefore, it seems alumina facilitate the presence of nickel oxide crystalline peaks at higher nickel content with lower substrate temperature and higher molarty.…”

Section: Resultsmentioning

confidence: 94%

Optical and morphological investigation of aluminium and nickel oxide composite films deposited by spray pyrolysis method as a basis of solar thermal absorber

Khatibani

Rozati

2015

Bull Mater Sci

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Applications of alumina and nickel oxide in various fields specially in solar energy conversion technology encouraged us to study physical properties of such materials. Hence after the deposition of the thin films on glass substrate by spray pyrolysis, using X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-visible spectrophotometry, various physical properties were investigated. Different optical quantities such as optical band gap, refractive index, extinction coefficient, dielectric constants, volume and surface energy loss functions and optical conductivity were determined. Within this paper for different nickel to aluminium ratio (from 20/80 to 80/20 ratio) at specific substrate temperatures (300 • C), decrease of optical transmittance with nickel content was notable. Using the transmittance data, other optical quantities were achieved by a numerical approximation method. We also observed an increase in the volume energy loss (VELF) more than the surface energy loss (SELF) and simultaneously a decrease trend prevailed according to nickel amount. On the basic of the XRD results, the amorphous phase changed by the presence of more nickel and according to SEM, more obvious nanosized spherical grains at higher nickel ratios can be observed.

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Section: Resultsmentioning

confidence: 94%

Optical and morphological investigation of aluminium and nickel oxide composite films deposited by spray pyrolysis method as a basis of solar thermal absorber

Khatibani

Rozati

2015

Bull Mater Sci

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“…Obviously the photoluminescence spectra of complexes 1−3 are not same as that of free base TPPS. To the best of our knowledge, the characteristic emission bands of lanthanide ions are located at around 567, 602, and 650 nm for Sm 3+ ( 4 G 5/2 → 6 H J (J = 5/2, 7/2, 9/2)), 37 ∼579, 592, 612, and 653 nm for Eu 3+ ( 5 D 0 → 7 F J (J = 1, 2, 3, 4)), 38 and ∼575 nm for Dy 3+ ( 4 F 9/2 → 6 H 13/2 ). 39 As a result, it is clear that the photoluminescence spectra of complexes 1−3 do not result from the lanthanide ions.…”

Section: ■ Experimental Sectionmentioning

confidence: 86%

“…38 V, accompanied by a reductive peak at −1.04 V (Figure7c). The CV value −1.38 V is close to that of DPV (−1.46 V).…”

mentioning

confidence: 99%

Preparation, Crystal Structures, and Properties of a Series of Crystalline Tetra(4-sulfonatophenyl)porphyrinato Histidine 4f-3d Porphyrinic Compounds

Chen

Zhang

Lin

et al. 2018

Crystal Growth & Design

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A series of novel 4f-3d crystalline porphyrinic compounds, {[Co(TPPS)] 2 [Ln(Histidine) 5,10,15,20-tetra(4-sulfonatophenyl)porphyrinato) with TPPS and histidine as mixed ligands, have been prepared and characterized by single-crystal X-ray diffraction technique. Complexes 1−3 are isomorphous and characteristic of a threedimensional (3D) framework with the lanthanide ions in two kinds of coordination geometries, i.e., eightfold square antiprism and ninefold monocapped square antiprism. The porphyrin macrocycles adopt a saddle-distorted nonplanar conformation with an embedded cobalt ion binding to four pyrrole nitrogen atoms. As revealed by the photoluminescence measurement, they exhibit blue emission. Variable-temperature magnetic susceptibility reveals that complexes 1−3 are antiferromagnetic. Their FTIR, CV, DPV, and UV/vis results are also studied in detail.

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“…Also, a quenching of the PL is observed for CeCl 3 concentrations higher than 1 at.%. Another research on Al 2 O 3 :Eu 3+ films was published in 2000 [72]. These films were deposited by the USP technique at substrate temperatures from 300 to 540 °C and the Eu 3+ doping concentration was varied.…”

Section: Luminescent Materialsmentioning

confidence: 99%

Spray Pyrolysis Technique; High-K Dielectric Films and Luminescent Materials: A Review

2018

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The spray pyrolysis technique has been extensively used to synthesize materials for a wide variety of applications such as micro and sub-micrometer dimension MOSFET´s for integrated circuits technology, light emitting devices for displays, and solid-state lighting, planar waveguides and other multilayer structure devices for photonics. This technique is an atmospheric pressure chemical synthesis of materials, in which a precursor solution of chemical compounds in the proper solvent is sprayed and converted into powders or films through a pyrolysis process. The most common ways to generate the aerosol for the spraying process are by pneumatic and ultrasonic systems. The synthesis parameters are usually optimized for the materials optical, structural, electric and mechanical characteristics required. There are several reviews of the research efforts in which spray pyrolysis and the processes involved have been described in detail. This review is intended to focus on research work developed with this technique in relation to high-K dielectric and luminescent materials in the form of coatings and powders as well as multiple layered structures.

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Characterization of Al2O3:Eu3+ Luminescent Coatings Prepared by Spray Pyrolysis Technique

Cited by 18 publications

References 4 publications

Optical and morphological investigation of aluminium and nickel oxide composite films deposited by spray pyrolysis method as a basis of solar thermal absorber

Optical and morphological investigation of aluminium and nickel oxide composite films deposited by spray pyrolysis method as a basis of solar thermal absorber

Preparation, Crystal Structures, and Properties of a Series of Crystalline Tetra(4-sulfonatophenyl)porphyrinato Histidine 4f-3d Porphyrinic Compounds

Spray Pyrolysis Technique; High-K Dielectric Films and Luminescent Materials: A Review

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