Influence of Excitation Frequency on Raman Modes of Thin Films
Figure 2
(a) Raman spectra of ( = 0, 0.15, 0.30, and 0.54) thin films and (b) variation in the energy of E2(Low) using green laser excitation source (514.5 nm = 2.41 eV). The dashed lines are guides to eyes tracing variations of E2(low) and A1(LO) and its replica 2A1(LO) mode energies with increasing Ga atomic fraction.
