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Investigating photoluminescence properties of Eu3+ doped CaWO4 nanoparticles via Bi3+ amalgamation for w-LEDs application.

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Title: Investigating photoluminescence properties of Eu3+ doped CaWO4 nanoparticles via Bi3+ amalgamation for w-LEDs application.
Authors: Singh, Maheshwary1 (AUTHOR), Haq, Waseem Ul1 (AUTHOR), Bishnoi, Swati2 (AUTHOR), Singh, Bheeshma Pratap3 (AUTHOR), Arya, Sandeep4 (AUTHOR) snp09arya@gmail.com, Khosla, Ajit5 (AUTHOR), Gupta, Vinay6 (AUTHOR)
Source: Materials Technology. Aug2022, Vol. 37 Issue 9, p1051-1061. 11p.
Subjects: Dipole-dipole interactions, Amalgamation, Energy transfer, Light emitting diodes, Scanning electron microscopy, Nanoparticles, Photoluminescence
Abstract: Eu3+-doped CaWO4 nanophosphors were synthesised in series for different atomic wt% concentrations (0, 0.5, 1, 2, 5 and 10) of Bi3+ by polyol method. Their structure and morphology were characterised using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The photoluminescence properties and energy transfer from Bi3+ to Eu3+ in CaWO4:Eu3+/Bi3+ nanophosphors were also investigated. The results revealed that red luminescence of CaWO4:2Eu3+/1Bi3+ nanophosphor is 5.4 times stronger than CaWO4:2Eu3+. It was observed that the forces exist between Bi3+ and Eu3+ are due to the interaction of electric dipole-dipole interactions. The chroma of CaWO4:2Eu3+/1Bi3+ nanophosphors was calculated to be 97.40%. The energy transfer process was studied by measuring the decay curves due to Bi3+ and Eu3+ dopants. Enhanced red emission, high thermal stability, stronger 5D0 → 7F2 absorption intensity, high colour purity and decay studies indicate that CaWO4:Eu3+/Bi3+ nanophosphors are potential candidates to be used in white light-emitting diode (wLEDs). [ABSTRACT FROM AUTHOR]
Copyright of Materials Technology is the property of Taylor & Francis Ltd 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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  Label: Title
  Group: Ti
  Data: Investigating photoluminescence properties of Eu<superscript>3+</superscript> doped CaWO<subscript>4</subscript> nanoparticles via Bi<superscript>3+</superscript> amalgamation for w-LEDs application.
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  Data: <searchLink fieldCode="AR" term="%22Singh%2C+Maheshwary%22">Singh, Maheshwary</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Haq%2C+Waseem+Ul%22">Haq, Waseem Ul</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bishnoi%2C+Swati%22">Bishnoi, Swati</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Singh%2C+Bheeshma+Pratap%22">Singh, Bheeshma Pratap</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Arya%2C+Sandeep%22">Arya, Sandeep</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> snp09arya@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Khosla%2C+Ajit%22">Khosla, Ajit</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gupta%2C+Vinay%22">Gupta, Vinay</searchLink><relatesTo>6</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+Technology%22">Materials Technology</searchLink>. Aug2022, Vol. 37 Issue 9, p1051-1061. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Dipole-dipole+interactions%22">Dipole-dipole interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Amalgamation%22">Amalgamation</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+transfer%22">Energy transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Light+emitting+diodes%22">Light emitting diodes</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoparticles%22">Nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Photoluminescence%22">Photoluminescence</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Eu3+-doped CaWO4 nanophosphors were synthesised in series for different atomic wt% concentrations (0, 0.5, 1, 2, 5 and 10) of Bi3+ by polyol method. Their structure and morphology were characterised using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The photoluminescence properties and energy transfer from Bi3+ to Eu3+ in CaWO4:Eu3+/Bi3+ nanophosphors were also investigated. The results revealed that red luminescence of CaWO4:2Eu3+/1Bi3+ nanophosphor is 5.4 times stronger than CaWO4:2Eu3+. It was observed that the forces exist between Bi3+ and Eu3+ are due to the interaction of electric dipole-dipole interactions. The chroma of CaWO4:2Eu3+/1Bi3+ nanophosphors was calculated to be 97.40%. The energy transfer process was studied by measuring the decay curves due to Bi3+ and Eu3+ dopants. Enhanced red emission, high thermal stability, stronger 5D0 → 7F2 absorption intensity, high colour purity and decay studies indicate that CaWO4:Eu3+/Bi3+ nanophosphors are potential candidates to be used in white light-emitting diode (wLEDs). [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials Technology is the property of Taylor & Francis Ltd 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: 10.1080/10667857.2021.1918866
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 1051
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      – SubjectFull: Dipole-dipole interactions
        Type: general
      – SubjectFull: Amalgamation
        Type: general
      – SubjectFull: Energy transfer
        Type: general
      – SubjectFull: Light emitting diodes
        Type: general
      – SubjectFull: Scanning electron microscopy
        Type: general
      – SubjectFull: Nanoparticles
        Type: general
      – SubjectFull: Photoluminescence
        Type: general
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      – TitleFull: Investigating photoluminescence properties of Eu3+ doped CaWO4 nanoparticles via Bi3+ amalgamation for w-LEDs application.
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            NameFull: Singh, Maheshwary
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            – D: 01
              M: 08
              Text: Aug2022
              Type: published
              Y: 2022
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