Debye temperature, Ternary Chalcopyrite, Debye-Waller Factor, Electronegativity, principal quantum number.
For more than 30 years, chalcopyrite semi-conductors with the forms AIBIIIC2VI & AIIBIVC2V have attracted much attention due to their potential applications in non-linear optical devices, detectors, solar cells etc. Numerous researchers have proposed a numbers of models to study the mechanical, electronic, chemical and optical properties of these types of solids. In the present work a simple empirical model has been proposed to estimate the Debye temperature (ƟD) of ternary chalcopyrite structure solids of AIBIIIC2VI & AIIBIVC2V type from the electro-negativities of the constituent atoms and the principal quantum number of atoms of the compounds. The empirical relation is based on the chemical bond theory. The Debye-Waller factors for the ternary chalcopyrite semi-conductors are determined from the calculated values of Debye Temperature.