Open AccessAb initio studies of structural, electronic, optical, elastic and thermal properties of CuGaTe-=SUB=-2-=/SUB=-
Author(s) -
P. Singh,
Sapna Sharma,
Sarita Kumari,
Vibhav K. Saraswat,
D. Sharma,
Ajay Singh Verma
Publication year - 2017
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2017.05.44433.8044
Subject(s) - debye model , bulk modulus , ab initio , materials science , elastic modulus , condensed matter physics , thermal expansion , refractive index , ab initio quantum chemistry methods , debye , molar absorptivity , molecular physics , chemistry , optics , physics , molecule , optoelectronics , composite material , organic chemistry
We have performed ab initio calculations for the structural, electronic, optical, elastic and thermal properties of CuGaTe 2 . In this study, we used an accurate full potential linearized augmented plane wave (FP-LAPW) method to find the equilibrium structural parameters and to compute the full elastic tensors. We report electronic and optical properties with the recently developed density functional of Tran and Blaha. Furthermore, optical features such as dielectric functions, refractive indices, extinction coefficient, optical reflectivity, absorption coefficients, optical conductivities, were calculated for photon energies up to 30 eV. The thermodynamical properties such as Debye temperature, entropy and Gruneisen parameter, bulk modulus and hardness were calculated employing the quasi-harmonic Debye model at different temperatures (0-1000 K) and pressures (0-8 GPa) and the silent results were interpreted. Most of the investigated parameters are reported for the first time. DOI: 10.21883/FTP.2017.05.44433.8044