Abstract
The arbitrary surface structuring of amorphous silicon (a-Si) films was performed by applying the Fourier-transform (FT) method to the femtosecond-laser-induced crystallization. In order to realize the arbitrary structuring, the logo q-Psi was produced in the a-Si film by the FT of a computer-generated hologram. The crystallization of a-Si was performed using the near-infrared femtosecond-laser pulses. By micro-Raman spectroscopy, scanning-electron microscopy, and transmission-electron microscopy, it was found that the femtosecond-laser pulses induced a localized phase transformation from the amorphous to the crystalline phase, and the spatially selected crystallization of the a-Si was responsible for the formation of the two-dimensional pattern.
| Original language | English |
|---|---|
| Article number | 151907 |
| Journal | Applied Physics Letters |
| Volume | 89 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2006 |
Bibliographical note
Funding Information:This work was supported by the Korea Science and Engineering Foundation (KOSEF) through Quantum Photonic Science Research Center.
Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
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