Optical and photoluminescence response driven by sintering temperature in LaFeO3 nano-perovskites.
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| Title: | Optical and photoluminescence response driven by sintering temperature in LaFeO |
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| Authors: | Yadav, Rashmi1 (AUTHOR) rashmiyadav23@gmail.com, Modi, Anchit2 (AUTHOR) anchitmodi87@gmail.com, Dubey, Kumud3 (AUTHOR), Malik, M. M.1 (AUTHOR) |
| Source: | Journal of Materials Science: Materials in Electronics. May2023, Vol. 34 Issue 15, p1-11. 11p. |
| Abstract: | In this report, we synthesized LaFeO3 nano-perovskite compounds using conventional sol–gel techniques at three different sintering temperatures of 550, 650, and 750 °C. This study investigated how sintering temperature affects various properties, including structural, microstructural, vibrational, optical, and photoluminescence properties. Rietveld-fitted X-ray diffraction study confirmed that all reported compounds exhibited orthorhombic symmetry, with Pbma space group, and no identifiable impurity or secondary phase. The lattice parameters increased with rising sintering temperature, as estimated using the Hall–Williamson method for crystalline size determination. Scanning electron microscopy (SEM) images revealed the formation of particles with a spherical shape/size and a flake-like grain structure. The particle size distribution results were similar to the crystalline size. Fourier transform infrared (FTIR) spectroscopy techniques were utilized to explore the vibration modes of Fe–O and the presence of distinct functional groups. Tauc's plot was also used to analyze the absorbance and optical band gap using UV–vis absorption spectroscopy. The optical band gap increased with the rising sintering temperature. We conducted a photoluminescence study to recognize oxygen vacancies and defects of the synthesized compounds. These imperfections cause lattice disorder and a shift in the energy band gap from the ultraviolet to the visible spectrum region, which affects electronic transitions. The synthesized compounds exhibited CIE (Commission Internationale de l’éclairage) chromaticity coordinates in the blue region, making them potentially useful in optical and display devices. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 163979474 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Optical and photoluminescence response driven by sintering temperature in LaFeO<subscript>3</subscript> nano-perovskites. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yadav%2C+Rashmi%22">Yadav, Rashmi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> rashmiyadav23@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Modi%2C+Anchit%22">Modi, Anchit</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> anchitmodi87@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Dubey%2C+Kumud%22">Dubey, Kumud</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Malik%2C+M%2E+M%2E%22">Malik, M. M.</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. May2023, Vol. 34 Issue 15, p1-11. 11p. – Name: Abstract Label: Abstract Group: Ab Data: In this report, we synthesized LaFeO3 nano-perovskite compounds using conventional sol–gel techniques at three different sintering temperatures of 550, 650, and 750 °C. This study investigated how sintering temperature affects various properties, including structural, microstructural, vibrational, optical, and photoluminescence properties. Rietveld-fitted X-ray diffraction study confirmed that all reported compounds exhibited orthorhombic symmetry, with Pbma space group, and no identifiable impurity or secondary phase. The lattice parameters increased with rising sintering temperature, as estimated using the Hall–Williamson method for crystalline size determination. Scanning electron microscopy (SEM) images revealed the formation of particles with a spherical shape/size and a flake-like grain structure. The particle size distribution results were similar to the crystalline size. Fourier transform infrared (FTIR) spectroscopy techniques were utilized to explore the vibration modes of Fe–O and the presence of distinct functional groups. Tauc's plot was also used to analyze the absorbance and optical band gap using UV–vis absorption spectroscopy. The optical band gap increased with the rising sintering temperature. We conducted a photoluminescence study to recognize oxygen vacancies and defects of the synthesized compounds. These imperfections cause lattice disorder and a shift in the energy band gap from the ultraviolet to the visible spectrum region, which affects electronic transitions. The synthesized compounds exhibited CIE (Commission Internationale de l’éclairage) chromaticity coordinates in the blue region, making them potentially useful in optical and display devices. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10854-023-10630-4 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 1 Titles: – TitleFull: Optical and photoluminescence response driven by sintering temperature in LaFeO3 nano-perovskites. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yadav, Rashmi – PersonEntity: Name: NameFull: Modi, Anchit – PersonEntity: Name: NameFull: Dubey, Kumud – PersonEntity: Name: NameFull: Malik, M. M. IsPartOfRelationships: – BibEntity: Dates: – D: 21 M: 05 Text: May2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 09574522 Numbering: – Type: volume Value: 34 – Type: issue Value: 15 Titles: – TitleFull: Journal of Materials Science: Materials in Electronics Type: main |
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