Growth and characterization of Bi2Te2.70Se0.30 nanostructured materials by using a cost-effective chemical solution route

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dc.contributor.authorBhuiyan M.R.A.
dc.contributor.authorKorucu H.
dc.contributor.authorMamur H.
dc.contributor.authorHaque M.M.
dc.date.accessioned2024-07-22T08:02:07Z
dc.date.available2024-07-22T08:02:07Z
dc.date.issued2023
dc.description.abstractA chemical solution route was employed to successfully synthesize single-phase Bi2Te2.70Se0.30 nanostructured powders at room temperature, ensuring minimal contamination. The synthesized powders underwent a comprehensive analysis using a range of characterization techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive analysis of X-ray (EDAX), ultraviolet-visible (UV) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, atomic-force microscopy (AFM), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The temperature-dependent behaviors of electrical conductivity and the Seebeck coefficient were also explored. The findings revealed that the synthesized powders displayed consistent spherical morphology, with an average diameter of 68.42 nm. Additionally, they exhibited a band gap energy of 0.615 eV. This research highlights the significant improvement achieved by incorporating selenium into the Bi2Te2.70Se0.30 materials through this synthesis process. The EDAX analysis confirmed the stoichiometric atomic ratio of bismuth (Bi), tellurium (Te), and selenium (Se) elements. Furthermore, the TEM images revealed the presence of agglomeration within the powders, demonstrating a primary crystalline size characterized by relatively small dimensions. The emergence of a pronounced exothermic peak at around 650 K signaled the commencement of oxidation for the Bi2Te2.70Se0.30 material. In electrical measurement, a synergy was achieved between heightened electrical conductivity and a well-matched Seebeck coefficient, with the goal of enhancing energy conversion efficiency in TE applications. These findings demonstrate the potential of the synthesized powders for producing nanostructured thermoelectric (TE) materials with controlled grain sizes, which are essential for the fabrication of high-performance thermoelectric generators (TEGs). © 2023 The Authors
dc.identifier.DOI-ID10.1016/j.jalmes.2023.100032
dc.identifier.issn29499178
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/11724
dc.language.isoEnglish
dc.publisherElsevier B.V.
dc.rightsAll Open Access; Gold Open Access
dc.subjectBismuth compounds
dc.subjectConversion efficiency
dc.subjectCost effectiveness
dc.subjectDifferential scanning calorimetry
dc.subjectElectric conductivity
dc.subjectElectronic equipment
dc.subjectEnergy gap
dc.subjectFourier transform infrared spectroscopy
dc.subjectHigh resolution transmission electron microscopy
dc.subjectNanostructured materials
dc.subjectPowders
dc.subjectSeebeck coefficient
dc.subjectSelenium
dc.subjectSelenium compounds
dc.subjectTellurium compounds
dc.subjectThermoelectric energy conversion
dc.subjectThermoelectric equipment
dc.subjectThermogravimetric analysis
dc.subjectX ray powder diffraction
dc.subjectBismuth2tellurium2.70selenia0.30
dc.subjectChemical solution route
dc.subjectCost effective
dc.subjectElectrical conductivity
dc.subjectEnergy dispersive analysis of X-rays
dc.subjectNanostructured powders
dc.subjectSingle phasis
dc.subjectSynthesized powder
dc.subjectThermoelectric generator
dc.subjectThermoelectric generators
dc.subjectScanning electron microscopy
dc.titleGrowth and characterization of Bi2Te2.70Se0.30 nanostructured materials by using a cost-effective chemical solution route
dc.typeArticle

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