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Issue 64, 2016, Issue in Progress
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Structural, electronic, optical, vibrational and transport properties of CuBX2 (X = S, Se, Te) chalcopyrites

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Abstract

The structural, electronic and optical properties of CuBX2 (X = S, Se, Te) chalcopyrite semiconductors have been studied using the full-potential (linearized) augmented plane-wave (FP(L)APW) method based on the density functional theory (DFT) within the Yukawa screened-PBE0 (YS-PBE0) hybrid functional as implemented in the WIEN2k package. We have found that our calculated structural and electronic parameters such as lattice parameter, tetragonal ratio, anion displacement and energy band gap are in very good agreement with previous experimental results. We have also presented the real and imaginary parts of the dielectric function, refractive index and absorption coefficients to describe optical properties of the investigated chalcopyrite semiconductors. Furthermore, the phonon dispersion curves and corresponding density of states have been studied by using a linear response approach based on the density functional perturbation theory implemented in the Quantum ESPRESSO code. Finally, transport properties such as the Seebeck coefficient, thermal and electrical conductivity and the figure of merit for these materials have been calculated using the semi-classical Boltzmann theory as implemented in the BoltzTraP code.

Graphical abstract: Structural, electronic, optical, vibrational and transport properties of CuBX2 (X = S, Se, Te) chalcopyrites

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Publication details

The article was received on 01 Feb 2016, accepted on 06 Jun 2016 and first published on 07 Jun 2016


Article type: Paper
DOI: 10.1039/C6RA02981G
Citation: RSC Adv., 2016,6, 59527-59540
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    Structural, electronic, optical, vibrational and transport properties of CuBX2 (X = S, Se, Te) chalcopyrites

    S. Bagci, B. G. Yalcin, H. A. R. Aliabad, S. Duman and B. Salmankurt, RSC Adv., 2016, 6, 59527
    DOI: 10.1039/C6RA02981G

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