화학공학소재연구정보센터
Thin Solid Films, Vol.548, 449-452, 2013
Rapid phase change induced by double picosecond laser pulses and the dynamics of acoustic phonons
For a given phase change material and composition, the double laser pulses better than a single pulse for the crystallization process. We investigated the crystallization process in Si15Sb85 thin films induced by double picosecond pulses with constant fluence and variable intervals. The crystallization degree is a function of the intervals of double pump laser pulses. The crystallization time decreased with the increasing of the intervals of the pump pulses. We believe that acoustic phonons play a key role in the crystallization process. (C) 2013 Elsevier B. V. All rights reserved.