Journal
APPLIED SURFACE SCIENCE
Volume 509, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2019.144820
Keywords
Mesoporous silicon; Picosecond laser beam; Micro-texturing; Micro-spikes; FTIR spectroscopy; Reflectivity
Categories
Funding
- French Ministry of Industry
- region 'Centre-Val-de-Loire'
Ask authors/readers for more resources
Conical spikes with sizes ranging between 0.2 and 5 mu m were formed on a mesoporous silicon surface under ultraviolet picosecond laser irradiation in ambient air. Scanning electron microscopy was employed to visualize the successive steps in the formation of the spikes. On increasing the number of shots (up to 1000) at a fluence of 400 mJ/cm(2), an increase in the size and an enhancement in the distribution of spikes were observed. The experimental observations revealed that the formation and the growth of these structures were mainly due to material ablation and removal mechanisms. FTIR analysis on several large (5 x 5 mm(2)) irradiated zones showed an enhancement in the absorption coefficient mainly in the IR range from 1 to 8 mu m versus the size of the microstructures.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available