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    Optoelectronic properties of thermally coated tin selenide thin films for photovoltaics

    , Article International Journal of Energy Research ; 2021 ; 0363907X (ISSN) Ali, N ; Sharif, U ; Shahzad, N ; Kalam, A ; Al-Sehemi, A ; Alrobei, H ; Khesro, A ; Sharif University of Technology
    John Wiley and Sons Ltd  2021
    Abstract
    In this study, 490 nm thin tin selenide thin films were deposited by facile co-evaporation techniques using Sn and Se sources on a clean glass substrate. The thin films were annealed at moderate annealing temperature followed by characterization and analysis. The thin annealed films possess polycrystalline nature and orthorhombic structure with an average grain size of 130 nm. The band gap assessed from absorption spectra for the highly annealed sample was 1.52 eV. The resistivity and sheet resistance were measured with four-probe techniques and the sheet resistance was =1.362 × 104 ohm for the highly annealed film. © 2021 John Wiley & Sons Ltd  

    Optoelectronic properties of thermally coated tin selenide thin films for photovoltaics

    , Article International Journal of Energy Research ; 2021 ; 0363907X (ISSN) Ali, N ; Sharif, U ; Shahzad, N ; Kalam, A ; Al-Sehemi, A ; Alrobei, H ; Khesro, A ; Sharif University of Technology
    John Wiley and Sons Ltd  2021
    Abstract
    In this study, 490 nm thin tin selenide thin films were deposited by facile co-evaporation techniques using Sn and Se sources on a clean glass substrate. The thin films were annealed at moderate annealing temperature followed by characterization and analysis. The thin annealed films possess polycrystalline nature and orthorhombic structure with an average grain size of 130 nm. The band gap assessed from absorption spectra for the highly annealed sample was 1.52 eV. The resistivity and sheet resistance were measured with four-probe techniques and the sheet resistance was =1.362 × 104 ohm for the highly annealed film. © 2021 John Wiley & Sons Ltd  

    Pr–Co co-doped BFO multiferroics nanomaterials for absorber applications

    , Article Ceramics International ; Volume 47, Issue 2 , 2021 , Pages 2144-2154 ; 02728842 (ISSN) Akhtar, M. N ; Yousaf, M ; Baqir, M. A ; Batoo, K. M ; Khan, M. A ; Sharif University of Technology
    Elsevier Ltd  2021
    Abstract
    Pr and Co co-doped BiFeO3 multiferroics of the following composition BiCoxPrxFe1-2xO3, where (x = 0.00, 0.05, 0.10, 0.15, 0.20 and 0.25) were prepared via sol-gel route. XRD, FTIR, SEM, VSM and VNA were used to evaluate the structural, phase, morphological and electromagnetic properties of Pr and Co co-doped multiferroics. All the undoped and Pr–Co co-doped multiferroics were of single rhombohedral phased whereas at higher concentration the orthorhombic structure was present. FTIR analysis exhibited the presence of orthorhombic phase. SEM images revealed that the grains of Pr and Co doped multiferroics are circular and elliptical in shape. Dielectric and electromagnetic properties were... 

    Pr–Co co-doped BFO multiferroics nanomaterials for absorber applications

    , Article Ceramics International ; Volume 47, Issue 2 , 2021 , Pages 2144-2154 ; 02728842 (ISSN) Akhtar, M. N ; Yousaf, M ; Baqir, M. A ; Batoo, K. M ; Khan, M. A ; Sharif University of Technology
    Elsevier Ltd  2021
    Abstract
    Pr and Co co-doped BiFeO3 multiferroics of the following composition BiCoxPrxFe1-2xO3, where (x = 0.00, 0.05, 0.10, 0.15, 0.20 and 0.25) were prepared via sol-gel route. XRD, FTIR, SEM, VSM and VNA were used to evaluate the structural, phase, morphological and electromagnetic properties of Pr and Co co-doped multiferroics. All the undoped and Pr–Co co-doped multiferroics were of single rhombohedral phased whereas at higher concentration the orthorhombic structure was present. FTIR analysis exhibited the presence of orthorhombic phase. SEM images revealed that the grains of Pr and Co doped multiferroics are circular and elliptical in shape. Dielectric and electromagnetic properties were... 

    Structural Rietveld refinement and magnetic features of prosademium (Pr) doped Cu nanocrystalline spinel ferrites

    , Article Ceramics International ; Volume 45, Issue 8 , 2019 , Pages 10187-10195 ; 02728842 (ISSN) Niaz Akhtar, M ; Babar, M ; Qamar, S ; ur Rehman, Z ; Azhar Khan, M ; Sharif University of Technology
    Elsevier Ltd  2019
    Abstract
    Pr doped spinel nanoferrites having following composition Cu Pr x Fe 2-x O 4 (x = 0, 0.25, 0.50, 0.75, 1.00) were synthesized using sol-gel route. Prosademium (Pr) which is a rare earth metal was doped to tailor the properties of the Cu spinel nanoferrites. Characterization tools such as FTIR, XRD, FESEM and VSM were employed to investigate the phase, absorption bands, structure, microstructure and magnetic properties. FTIR was used to see the absorption bands and force constants of the Pr doped Cu spinel nanoferrites. Crystallite size, lattice parameters, cell volume and micro strains were determined from XRD data. Bulk density, X-ray density and porosity of the Pr doped Cu spinel...