Abstract
Laser-ablation techniques have been widely applied for removing material from a solid surface using a laser-beam irradiating apparatus. This paper presents a surface-texturing technique to create rough patterns on a silicon substrate using a pulsed Nd:YAG laser system. The different degrees of microstructure and surface roughness were adjusted by the laser fluence and laser pulse duration. A scanning electron microscope (SEM) and a 3D confocal laser-scanning microscope are used to measure the surface micrograph and roughness of the patterns, respectively. The contact angle variations between droplets on the textured surface were measured using an FTA 188 video contact angle analyzer. The results indicate that increasing the values of laser fluence and laser pulse duration pushes more molten slag piled around these patterns to create micro-sized craters and leads to an increase in the crater height and surface roughness. A typical example of a droplet on a laser-textured surface shows that the droplet spreads very quickly and almost disappears within 0.5167 s, compared to a contact angle of 47.9° on an untextured surface. This processing technique can also be applied to fabricating Si solar panels to increase the absorption efficiency of light.
| Original language | English |
|---|---|
| Pages (from-to) | 303-308 |
| Number of pages | 6 |
| Journal | Applied Physics A: Materials Science and Processing |
| Volume | 101 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2010 Nov 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
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Surface wettability of silicon substrates enhanced by laser ablation. / Tseng, Shih Feng; Hsiao, Wen Tse; Chen, Ming Fei; Huang, Kuo Cheng; Hsiao, Sheng Yi; Lin, Yung Sheng; Chou, Chang Pin.
In: Applied Physics A: Materials Science and Processing, Vol. 101, No. 2, 01.11.2010, p. 303-308.Research output: Contribution to journal › Article
TY - JOUR
T1 - Surface wettability of silicon substrates enhanced by laser ablation
AU - Tseng, Shih Feng
AU - Hsiao, Wen Tse
AU - Chen, Ming Fei
AU - Huang, Kuo Cheng
AU - Hsiao, Sheng Yi
AU - Lin, Yung Sheng
AU - Chou, Chang Pin
PY - 2010/11/1
Y1 - 2010/11/1
N2 - Laser-ablation techniques have been widely applied for removing material from a solid surface using a laser-beam irradiating apparatus. This paper presents a surface-texturing technique to create rough patterns on a silicon substrate using a pulsed Nd:YAG laser system. The different degrees of microstructure and surface roughness were adjusted by the laser fluence and laser pulse duration. A scanning electron microscope (SEM) and a 3D confocal laser-scanning microscope are used to measure the surface micrograph and roughness of the patterns, respectively. The contact angle variations between droplets on the textured surface were measured using an FTA 188 video contact angle analyzer. The results indicate that increasing the values of laser fluence and laser pulse duration pushes more molten slag piled around these patterns to create micro-sized craters and leads to an increase in the crater height and surface roughness. A typical example of a droplet on a laser-textured surface shows that the droplet spreads very quickly and almost disappears within 0.5167 s, compared to a contact angle of 47.9° on an untextured surface. This processing technique can also be applied to fabricating Si solar panels to increase the absorption efficiency of light.
AB - Laser-ablation techniques have been widely applied for removing material from a solid surface using a laser-beam irradiating apparatus. This paper presents a surface-texturing technique to create rough patterns on a silicon substrate using a pulsed Nd:YAG laser system. The different degrees of microstructure and surface roughness were adjusted by the laser fluence and laser pulse duration. A scanning electron microscope (SEM) and a 3D confocal laser-scanning microscope are used to measure the surface micrograph and roughness of the patterns, respectively. The contact angle variations between droplets on the textured surface were measured using an FTA 188 video contact angle analyzer. The results indicate that increasing the values of laser fluence and laser pulse duration pushes more molten slag piled around these patterns to create micro-sized craters and leads to an increase in the crater height and surface roughness. A typical example of a droplet on a laser-textured surface shows that the droplet spreads very quickly and almost disappears within 0.5167 s, compared to a contact angle of 47.9° on an untextured surface. This processing technique can also be applied to fabricating Si solar panels to increase the absorption efficiency of light.
UR - http://www.scopus.com/inward/record.url?scp=78049321987&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78049321987&partnerID=8YFLogxK
U2 - 10.1007/s00339-010-5821-y
DO - 10.1007/s00339-010-5821-y
M3 - Article
AN - SCOPUS:78049321987
VL - 101
SP - 303
EP - 308
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
SN - 0947-8396
IS - 2
ER -