To investigate the dynamic stability of lead-free double perovskites Cs2NaGaX6 for potential optoelectronic applications.
Conducted phonon dispersion calculations for Cs2NaGaX6 (X = F, Cl, and Br).
All compounds show no imaginary frequencies, indicating dynamic stability.
Resumen
Phonon dispersion calculations show the absence of imaginary frequencies, confirming that all Cs 2 NaGaX 6 (X = F, Cl, and Br) compounds are dynamically stable.