Raman study of amorphous to microcrystalline phase transition in cw laser annealed a-Si:H films

Abstract
The dynamic behavior of continuous wave (cw) laser‐induced crystallization in the a‐Si:H film on a quartz substrate is studied by light scattering. Microcrystals of dimensions less than 30 Å could be grown in a stable state and it is demonstrated that the surface‐to‐volume correction is essential for estimating the frequency of the crystallinelike mode. It is suggested that bulk‐induced crystallization may be responsible for the formation of very small crystallites.