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Study of optoelectronic and transport properties of MgLu2Z4 (Z=S, Se) spinels for optoelectronic and energy harvesting applications
Physics Department, University of the Lahore, 54000, Pakistan.
Department of Physics, RIPHAH International University, Campus Lahore, Pakistan.
Department of Physics, RIPHAH International University, Campus Lahore, Pakistan.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-6659-9771
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2021 (English)In: Materials Science in Semiconductor Processing, ISSN 1369-8001, E-ISSN 1873-4081, Vol. 121, article id 105452Article in journal (Refereed) Published
Abstract [en]

Intense research has been done to build materials that are potential candidates for energy storage applications. Spinels are of great interest in this respect because they have vast potential to be used in Mg-based batteries. To explore their energy storage as well as transport response, we calculate Mg-based spinels, namely MgLu2Z4 (ZS, Se). The full potential linearized augmented plane wave method has been used to examine their optoelectronic and transport response. An increase in the lattice constant has been observed by replacing S with Se, and our calculated values are in good agreement with those obtained experimentally. The Tran-Blaha modified Becke-Johnson exchange potential (TB-mBJ), has been used to study the optoelectronic and thermoelectric characteristics of the respective spinels. The dependence of these properties on the bandgap has also been observed. Replacing S with Se resulted in the transformation of the electronic bandgap from near-infrared to the visible region (MgLu2S4: 2.60 eV and MgLu2Se4: 2.00 eV). These results showed that these materials have the potential to be used in optoelectronic devices. The optical properties are discussed as a function of energy. Besides, the thermal transports are discussed with the help of Seebeck coefficient and figure of merit as a function of chemical potential and temperature.

Place, publisher, year, edition, pages
Elsevier, 2021. Vol. 121, article id 105452
Keywords [en]
Magnesium based spinels, First-principle calculations, Optoelectronic properties, Transport properties
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Other Physics Topics
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Applied Physics
Identifiers
URN: urn:nbn:se:ltu:diva-81027DOI: 10.1016/j.mssp.2020.105452ISI: 000585294800005Scopus ID: 2-s2.0-85091677588OAI: oai:DiVA.org:ltu-81027DiVA, id: diva2:1473340
Note

Godkänd;2020;Nivå 0;2020-10-06 (alebob)

Available from: 2020-10-06 Created: 2020-10-06 Last updated: 2022-06-30Bibliographically approved

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Sajjad, Muhammad

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