Band structure and optical properties of antimony-sulfobromide: density functional calculation

• Autorzy: Harun Akkus , Amirullah Mamedov , Ali Kazempour , Hadi Akbarzadeh
• Języki publikacji: EN

Abstrakty

EN

The electronic structure, linear, and non-linear optical properties of ferroelectric-semiconductor SbSBr are investigated in the non-polar (paraelectric) and polar (ferroelectric) phase, using the density functional methods in the generalized gradient approximation. The electronic band structure obtained shows that SbSBr has an indirect forbidden gap of 2.16 and 2.21 eV in the paraelectric and ferroelectric phase, respectively. The linear photon-energy dependent dielectric functions and some optical functions, such as absorption and extinction coefficients, refractive index, energy-loss function, reflectivity, and optical conductivity in both phases and photon-energy dependent second-order susceptibilities in the ferroelectric phase are calculated. Moreover, some important optical parameters, such as the effective number of valence electrons and the effective optical dielectric constant, are calculated in both phases.

Słowa kluczowe

EN

SbSBr; ferroelectric semiconductor; optical properties; electronic structure

• Czasopismo: Open Physics
• Rocznik: 2008
• Tom: 6
• Numer: 1
• Strony: 64-75

Daty

wydano

2008-03-01

online

2008-03-26

Twórcy

autor

Harun Akkus

• Department of Physics, Yuzuncu Yil University, 65080, Van, Turkey,

autor

Amirullah Mamedov

• Department of Physics, Cukurova University, 01330, Adana, Turkey

autor

Ali Kazempour

• Department of Physics, Isfahan University of Technology, Isfahan, 84156, Iran

autor

Hadi Akbarzadeh

• Department of Physics, Isfahan University of Technology, Isfahan, 84156, Iran

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Identyfikatory

DOI

10.2478/s11534-008-0028-y