期刊
PHYSICS LETTERS A
卷 382, 期 23, 页码 1540-1544出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2018.04.014
关键词
Time-resolved image; Laser-Induced directed dewetting; Pulse laser irradiation
资金
- Natural Science Foundation of China [61705117]
- Key Research and Development Program of Zhejiang Province [2017C01005]
- Natural Science Foundation of Higher Education of AnHui Province [KJ2016SD42]
- K.C. Wong Magna Fund in Ningbo University
In the present work, nanosecond pulsed laser crystallization, dewetting and ablation of thin amorphous silicon films are investigated by time-resolved imaging. Laser pulses of 532 nm wavelength and 7 ns temporal width are irradiated on silicon film. Below the dewetting threshold, crystallization process happens after 400 ns laser irradiation in the spot central region. With the increasing of laser fluence, it is observed that the dewetting process does not conclude until 300 ns after the laser irradiation, forming droplet-like particles in the spot central region. At higher laser intensities, ablative material removal occurs in the spot center. Cylindrical rims are formed in the peripheral dewetting zone due to solidification of transported matter at about 500 ns following the laser pulse exposure. (C) 2018 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据