Femtosecond laser-induced crystallization in amorphous Sb-rich AgInSbTe films

Crystallization in amorphous Sb-rich AgInSbTe films was induced by femtosecond laser with an average power 65 mW at a frequency of 1 kHz and a pulsed duration of 120 fs. The reflectivity and X-ray diffraction measurements confirmed the formation of the crystalline state in amorphous Sb-rich AgInSbTe films. Atom force microscopy (AFM) observed the characteristics of the surface morphology of amorphous, annealed and femtosecond laser-induced films. Results indicated the surface of Sb-rich AgInSbTe films induced by femtosecond laser is not smooth and contains many crystalline granules.