Theoretical and experimental study on the photoluminescence in BaTiO3 amorphous thin films prepared by the chemical route

Pontes, F. M.; Pinheiro, C. D.; Longo, Elson; Leite, E. R.; Lázaro, Sérgio Ricardo de; Magnani, R.; Pizani, P. S.; Boschi, T. M.; Lanciotti, F.

doi:10.1016/s0022-2313(03)00014-0

Cited by 76 publications

(41 citation statements)

References 24 publications

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“…In this work, the XANES spectra are characteristic of Zr atoms in at least two Zr environments. We attributed this behavior, based on our previous XANES results presented in the crystallization process for titanates: SrTiO 3 , PbTiO 3 and CaTiO 3 [32][33][34] …”

Section: X-ray Diffraction Analysismentioning

confidence: 92%

“…Recently, several studies have been dedicated to the photoluminescence phenomenon, especially in BaTiO 3 perovskite, mainly due to their excellent optical properties [1][2][3]. In particular, the literature reports several theories on the wide band visible emission observed in crystalline titanates, which belongs to a universal "green-luminescence".…”

Section: Introductionmentioning

confidence: 99%

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Intense blue and green photoluminescence emissions at room temperature in barium zirconate powders

Cavalcante

Sczancoski

Espinosa

et al. 2009

Journal of Alloys and Compounds

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Section: X-ray Diffraction Analysismentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Intense blue and green photoluminescence emissions at room temperature in barium zirconate powders

Cavalcante

Sczancoski

Espinosa

et al. 2009

Journal of Alloys and Compounds

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“…Perovskite-oxides have been extensively studied due to their excellence in electrical [1] and optical properties [2,3]. Recently, perovskite-oxides have attracted great interest in their use as nanocatalysts in the photocatalytic decolorization of methylene blue applications such as BaTiO 3 [4], SrTiO 3 [4,5], CaTiO 3 [4,6,7], and Ba 1− Sr TiO 3 [8].…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Different A-, A-B-, and B-Site Incorporated in (Ba_0.5Sr_0.5)TiO₃ on Photocatalytic Application

Tubchareon

Klaysri

Praserthdam

2015

Advances in Optical Technologies

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The structural modification of Ba 0.5 Sr 0.5 TiO 3 (BST) nanocatalyst was successfully synthesized via sol-gel process. The BST catalyst was modified by A-site (A-BST), A-B-site (A-B-BST), and B-site (B-BST) in order to investigate the effect of structurally modified BST catalyst for photocatalytic decolorization of methylene blue. The structurally modified BST catalysts can increase the nonradiation energy such as phonon energy compared to that of BST one. The partial incorporation of the A-BST catalyst was evidenced by the higher-ordered structure by increasing number of Ti 4+ ions and the lattice oxygen. The A-B-BST and A-BST catalysts were given more electron-transfer in the TiO 6 than that of BST and B-BST catalysts, respectively. The A-B-BST catalyst promoted the oxidation of the lattice oxygen by holes capturing to form the chemisorbed oxygen, presenting the highest photobleaching activity of methylene blue. On the other hand, more oxygen vacancies recombination of BST catalyst compared to that of structurally modified BST catalysts presented the reduction of photocatalytic activity.

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“…Most recently, barium titantate (BTO) has captured special attention among these materials, as more information has been disclosed by studies on the photoluminescence (PL) in BTO [5]. BTO is able to emit PL phenomenon at room temperature in the form of amorphous powders as well as nanocrystals [6], and PL could result from the effect of either quantum connement or defect.…”

Section: Introductionmentioning

confidence: 99%

High fluorescence emission of carboxylic acid functionalized polystyrene/BaTiO3 nanocomposites and rare earth metal complexes: Preparation and characterization

Cao¹,

Showkat²,

Wang³

et al. 2015

AIP Conference Proceedings

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Abstract. Noble fluorescence nanocomposite compound based on barium titanate nanoparticles (BTO), polystyrene (PSt), and terbium ion (Tb 3+ ) was synthesized by a combination of surfaceinitiated reversible addition-fragmentation chain transfer (RAFT) polymerization, Friedel-Crafts alkylation reaction and coordinate chemistry. Initially, a modification of surface of BTO was conducted by an exchange process with S-benzyl S'-trimethoxysilylpropyltrithiocarbonate to create macro-initiator for polymerization of styrene. Subsequently, aryl carboxylic acid functionalized polystyrene grafted barium titanate (BTO-g-PSt-COOH) was generated by substitution reaction between 4-(Chloromethyl) benzoic acid and PSt chains. The coordination of the nanohybrids with Tb 3+ ions afforded fluorescent Tb 3+ tagged aryl carboxylic acid functionalized polystyrene grafted barium titanate (BTO-g-PSt-Tb 3+ ) complexes. Structure, morphology, and fluorescence properties of nanohybrid complexes were investigated by respective physical and spectral studies. FT-IR and SEM analyses confirmed the formation of BTO-g-PSt-Tb 3+ nanohybrids. Furthermore, TGA profiles demonstrated the grafting of aryl carboxylic acid functionalized polystyrene on BTO surface. Optical properties of BTO-g-PSt-Tb 3+ complexes were investigated by fluorescence spectroscopy.

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Theoretical and experimental study on the photoluminescence in BaTiO3 amorphous thin films prepared by the chemical route

Cited by 76 publications

References 24 publications

Intense blue and green photoluminescence emissions at room temperature in barium zirconate powders

Intense blue and green photoluminescence emissions at room temperature in barium zirconate powders

A Comparison of Different A-, A-B-, and B-Site Incorporated in (Ba_0.5Sr_0.5)TiO₃ on Photocatalytic Application

High fluorescence emission of carboxylic acid functionalized polystyrene/BaTiO3 nanocomposites and rare earth metal complexes: Preparation and characterization

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Theoretical and experimental study on the photoluminescence in BaTiO3 amorphous thin films prepared by the chemical route

Cited by 76 publications

References 24 publications

Intense blue and green photoluminescence emissions at room temperature in barium zirconate powders

Intense blue and green photoluminescence emissions at room temperature in barium zirconate powders

A Comparison of Different A-, A-B-, and B-Site Incorporated in (Ba0.5Sr0.5)TiO3 on Photocatalytic Application

High fluorescence emission of carboxylic acid functionalized polystyrene/BaTiO3 nanocomposites and rare earth metal complexes: Preparation and characterization

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A Comparison of Different A-, A-B-, and B-Site Incorporated in (Ba_0.5Sr_0.5)TiO₃ on Photocatalytic Application