Relationship between the thermal expansion coefficient, plasmon energy, and bond length of ternary chalcopyrite semiconductors Original Research Article

A simple relation between the average bond length and plasmon energy, that is, d=15.30(ℏωp)−2/3, has been proposed for AIIBIVCV2 and AIBIIICVI2 chalcopyrite semiconductors. The average linear thermal expansion coefficient (αL) of these semiconductors has been calculated using plasmon energy data. The linear expansion coefficients (αa) and (αc) of the lattice parameters a and c, respectively, have also been calculated. The calculated values of d, αL, αa and αc have been compared with the experimental values and the values reported by different workers. A fairly good agreement has been obtained between them.