Physical characterization of the semiconducting deficient perovskite BaSnO3−δ

Hadjarab, B.; Trari, M.; Kebir, Mohammed

doi:10.1016/j.mssp.2014.04.041

Cited by 13 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value of ND was calculated from the slope of the Mott-Schottky plot and values of 1.4 x 10 20 cm -3 and 2.1 x 10 20 cm -3 were obtained for SrSnO3 and SrSnO3@ZrO2 samples. These values are smaller than those reported by Hadjarab et al [55] for SrSnO3:La (1.04 x 10 21 cm -3 ) and for BaSnO3δ (3.07 x 10 21 cm -3 ) [56], probably due to their doping or reduction processes, which increase the number of donors. For undoped materials, literature reports very low electrical conductivities of about 1.0 x 10 -7 S m -1 or lower [57,58], while a higher conductivity is reported for reduced materials (σ = 0.33 S m -1 ).…”

Section: Figurecontrasting

confidence: 57%

Supporting the photocatalysts on ZrO2: An effective way to enhance the photocatalytic activity of SrSnO3

Honorio

Oliveira

Filho

et al. 2020

Applied Surface Science

View full text Add to dashboard Cite

This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

show abstract

Section: Figurecontrasting

confidence: 57%

Supporting the photocatalysts on ZrO2: An effective way to enhance the photocatalytic activity of SrSnO3

Honorio

Oliveira

Filho

et al. 2020

Applied Surface Science

View full text Add to dashboard Cite

show abstract

“…In a strictly stoichiometric compound, the occurrence of Ba Sn may be unlikely. However, it has been reported that due to the large size of the A-site in BaSnO 3 , the Sn cations may actually reside on the A-sites and take a divalent oxidation state to form Sn x Ba [36,40,55,73]. While the defect itself is charge-neutral, site balance requirements can induce charged cationic vacancies, thereby suppressing conductivity in our doped films.…”

Section: In the Ideal Case R •mentioning

confidence: 93%

Magnetism and transport in transparent high-mobility BaSnO3 films doped with La, Pr, Nd, and Gd

Alaan

Wong

Ditto

et al. 2019

Phys. Rev. Materials

View full text Add to dashboard Cite

We have explored the effect of magnetic rare-earth dopants substitutionally incorporated on the Ba sites of BaSnO 3 in terms of electronic transport, magnetism, and optical properties. We show that for Ba 0.92 R 0.08 SnO 3 thin films (where R = La, Pr, Nd, Gd), there is a linear increase of mobility with carrier concentration across all doping schemes. La-doped films have the highest mobilities, followed by Pr-and Nd-doped films. Gddoped samples have the largest ionic size mismatch with the Ba site and correspondingly the lowest carrier concentrations and electron mobilities. However, crystallinity does not appear to be a strong predictor of transport phenomena; our results suggest that point defects more than grain boundaries are key ingredients in tuning the conduction of BaSnO 3 films grown by pulsed laser deposition. Pronounced, nonhysteretic x-ray magnetic dichroism signals are observed for Pr-, Nd-, and Gd-doped samples, indicating paramagnetism. Finally, we probe the optical constants for each of the BaSnO 3 doping schemes and note that there is little change in the transmittance across all samples. Together these results shed light on conduction mechanisms in BaSnO 3 doped with rare-earth cations.

show abstract

“…For example, Liu et al 15 studied the origin of the superior conductivity of BaSnO 3 in depth using the first-principle band structure calculations, and pointed out that the local structure distortion and strength of Sn−O hybridization were two important factors that were likely to affect the materials' conductivity. Hadjarab et al 18 suggested that the oxygen deficiency in the BaSnO 3 structure could play a crucial role in achieving a high conductivity in the material.…”

Section: Introductionmentioning

confidence: 99%

A Facile Peroxo-Precursor Synthesis Method and Structure Evolution of Large Specific Surface Area Mesoporous BaSnO₃

et al. 2015

View full text Add to dashboard Cite

In this paper, we propose a facile and efficient strategy for synthesizing mesoporous BaSnO3 with a surface area as large as 67 m(2)/g using a peroxo-precursor decomposition procedure. As far as we know, this is the largest surface area reported in literature for BaSnO3 materials and may have a potential to greatly promote the technological applications of this kind of functional material in the area of chemical sensors, NOx storage, and dye-sensitized solar cells. The structure evolution of the mesoporous BaSnO3 from the precursor was followed using a series of techniques. Infrared analysis indicates large amount of protons and peroxo ligands are contained in the peroxo-precursor. Although the crystal structure of the precursor appears cubic according to the analysis of X-ray diffraction data, Raman and Mössbauer spectroscopy results show that the Sn atom is offset from the center of [SnO6] octahedron. After calcination at different temperatures, the precursor gradually transforms into BaSnO3 by release of water and oxygen, and the distortion degree of [SnO6] octahedral decreases. However, a number of oxygen vacancies are generated in the calcined samples, which are further confirmed by the physical property measurement system, and they would lower the local symmetry to some content. The concentration of the oxygen vacancies reduces simultaneously as the calcination temperature increases, and their contributions to the total heat capacity of the sample are calculated based on theoretical analysis of heat capacity data in the temperature region below 10 K.

show abstract

Physical characterization of the semiconducting deficient perovskite BaSnO3−δ

Cited by 13 publications

References 16 publications

Supporting the photocatalysts on ZrO2: An effective way to enhance the photocatalytic activity of SrSnO3

Supporting the photocatalysts on ZrO2: An effective way to enhance the photocatalytic activity of SrSnO3

Magnetism and transport in transparent high-mobility BaSnO3 films doped with La, Pr, Nd, and Gd

A Facile Peroxo-Precursor Synthesis Method and Structure Evolution of Large Specific Surface Area Mesoporous BaSnO₃

Contact Info

Product

Resources

About

Physical characterization of the semiconducting deficient perovskite BaSnO3−δ

Cited by 13 publications

References 16 publications

Supporting the photocatalysts on ZrO2: An effective way to enhance the photocatalytic activity of SrSnO3

Supporting the photocatalysts on ZrO2: An effective way to enhance the photocatalytic activity of SrSnO3

Magnetism and transport in transparent high-mobility BaSnO3 films doped with La, Pr, Nd, and Gd

A Facile Peroxo-Precursor Synthesis Method and Structure Evolution of Large Specific Surface Area Mesoporous BaSnO3

Contact Info

Product

Resources

About

A Facile Peroxo-Precursor Synthesis Method and Structure Evolution of Large Specific Surface Area Mesoporous BaSnO₃