Optoelectronic Structure and Related Transport Properties of Ag2Sb2O6 and Cd2Sb2O7 View Full Text


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Article Info

DATE

2017-11-28

AUTHORS

Muhammad Irfan, Safdar Hussain, Saleem Ayaz Khan, Souraya Goumri-Said, Sikander Azam

ABSTRACT

Using the full-potential linearized augmented-plane wave method, the electronic structure and thermoelectric properties of Ag2Sb2O6 and Cd2Sb2O7 compounds have been explored. The modified Becke–Johnson potential was applied to treat the exchange–correlation energy term. The electronic band structures reveal that the valence-band maximum and conduction-band minimum occur at Γ point, indicating that Ag2Sb2O6 and Cd2Sb2O7 are direct energy bandgap semiconductors. Strong hybridization appeared between Ag (Cd)-s/p and O-s/p states. The optical properties, i.e., complex dielectric function, reflectivity, refractive index, and energy loss function, reveal high reflectivity in the ultraviolet energy range, indicating usefulness of these materials in shields from high-energy radiation. Combining transport theory and the outputs from the full-potential linearized augmented-plane wave calculations, the thermoelectric properties were analyzed as functions of temperature. Due to their high thermopower and narrow bandgap, Ag2Sb2O6 and Cd2Sb2O7 are suitable materials for application in optoelectronic and thermoelectric devices. More... »

PAGES

1481-1489

References to SciGraph publications

  • 2008-02. Complex thermoelectric materials in NATURE MATERIALS
  • 2000-08. Transparent Conducting Oxides in MRS BULLETIN
  • 1990-01. Electrical conduction in sintered Cd2Sb2O7 pyrochlore in JOURNAL OF MATERIALS SCIENCE LETTERS
  • Identifiers

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    http://scigraph.springernature.com/pub.10.1007/s11664-017-5939-1

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    http://dx.doi.org/10.1007/s11664-017-5939-1

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