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Structural, Optical Absorption and Conductivity of PIn/Co3O4 Composites.

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Title: Structural, Optical Absorption and Conductivity of PIn/Co3O4 Composites.
Authors: Raghavendra, B.1 (AUTHOR), Sankarappa, T.1 (AUTHOR) sankarappa@rediffmail.com, Malge, Amarkumar1 (AUTHOR)
Source: Journal of Inorganic & Organometallic Polymers & Materials. Sep2020, Vol. 30 Issue 9, p3586-3594. 9p.
Subjects: Light absorption, Optical conductivity, Band gaps, Activation energy, Electric conductivity
Abstract: This article presents the results obtained from structural, optical absorption and dc conductivity studies of pure polyindole (PIn) and its Co3O4 doped composites. Polyindole has been prepared by chemical oxidation method at room temperature using APS as an oxidant. The composites with varied concentrations of Co3O4 were prepared by in situ polymerization method. The obtained powder XRD patterns of both PIn and its composites indicated amorphous nature. Shifting of aromatic alkene peaks in FTIR reveals interaction between PIn and Co3O4. DC electrical conductivity has been measured in the temperature range 303–393 K and its observed variation inferred semiconducting nature of both pure PIn and the composites. Optical absorption studies have carried out and the band gap for both direct and indirect allowed transitions has been determined to be in the range from 1.79 to 2.34 eV and 2.38 to 3.19 eV respectively. These sizes of band gap values make them to be suitable for opto electronic applications. Activation energy for dc conduction has been determined using Arrhenius expression and it is found to be in the range of 0.3252–0.3806 eV. Conductivity increased and activation energy for conduction decreased with increase of Co3O4 concentration. This is interpreted to be due to decrease of hopping distance of charge carriers with increase of Co3O4 in the composites. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Inorganic & Organometallic Polymers & Materials 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.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 147250146
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  Data: Structural, Optical Absorption and Conductivity of PIn/Co<subscript>3</subscript>O<subscript>4</subscript> Composites.
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  Data: <searchLink fieldCode="DE" term="%22Light+absorption%22">Light absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+conductivity%22">Optical conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Band+gaps%22">Band gaps</searchLink><br /><searchLink fieldCode="DE" term="%22Activation+energy%22">Activation energy</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink>
– Name: Abstract
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  Data: This article presents the results obtained from structural, optical absorption and dc conductivity studies of pure polyindole (PIn) and its Co3O4 doped composites. Polyindole has been prepared by chemical oxidation method at room temperature using APS as an oxidant. The composites with varied concentrations of Co3O4 were prepared by in situ polymerization method. The obtained powder XRD patterns of both PIn and its composites indicated amorphous nature. Shifting of aromatic alkene peaks in FTIR reveals interaction between PIn and Co3O4. DC electrical conductivity has been measured in the temperature range 303–393 K and its observed variation inferred semiconducting nature of both pure PIn and the composites. Optical absorption studies have carried out and the band gap for both direct and indirect allowed transitions has been determined to be in the range from 1.79 to 2.34 eV and 2.38 to 3.19 eV respectively. These sizes of band gap values make them to be suitable for opto electronic applications. Activation energy for dc conduction has been determined using Arrhenius expression and it is found to be in the range of 0.3252–0.3806 eV. Conductivity increased and activation energy for conduction decreased with increase of Co3O4 concentration. This is interpreted to be due to decrease of hopping distance of charge carriers with increase of Co3O4 in the composites. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Journal of Inorganic & Organometallic Polymers & Materials 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:
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      – Type: doi
        Value: 10.1007/s10904-020-01589-4
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 3586
    Subjects:
      – SubjectFull: Light absorption
        Type: general
      – SubjectFull: Optical conductivity
        Type: general
      – SubjectFull: Band gaps
        Type: general
      – SubjectFull: Activation energy
        Type: general
      – SubjectFull: Electric conductivity
        Type: general
    Titles:
      – TitleFull: Structural, Optical Absorption and Conductivity of PIn/Co3O4 Composites.
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            NameFull: Raghavendra, B.
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            NameFull: Sankarappa, T.
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            NameFull: Malge, Amarkumar
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            – D: 01
              M: 09
              Text: Sep2020
              Type: published
              Y: 2020
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              Value: 30
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            – TitleFull: Journal of Inorganic & Organometallic Polymers & Materials
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