Impact of femtosecond laser processing on dielectric layers for solar cell applications

2018 ◽  
Vol 30 (3) ◽  
pp. 032019
Author(s):  
Jaffar Moideen Yacob Ali ◽  
Vinodh Shanmugam ◽  
Carlos D. Rodríguez-Gallegos ◽  
Armin G. Aberle ◽  
Thomas Mueller
Keyword(s):  
Solar Cell ◽  
Femtosecond Laser ◽  
Laser Processing ◽  
Dielectric Layers ◽  
Femtosecond Laser Processing

Femtosecond Laser-Induced Surface Texturing and Crystallization of a-Si:H Thin Film

2010 ◽  
Author(s):  
Hongliang Wang ◽  
Panjawat Kongsuwan ◽  
Gen Satoh ◽  
Y. Lawrence Yao
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Femtosecond Laser ◽  
Laser Processing ◽  
Light Trapping ◽  
Surface Texturing ◽  
Surface Geometry ◽  
Femtosecond Laser Processing ◽  
Stability Issues ◽  
Surface Morphologies

Hydrogenated amorphous silicon (a-Si:H) thin films have been considered for use in solar cell applications because of their significantly reduced cost, however, the overall efficiency and stability are less than that of their bulk crystalline counterparts. Limited work has been performed on solving the efficiency and stability issues of a-Si:H simultaneously. In this study, both surface texturing and crystallization on a-Si:H thin film are achieved through one-step femtosecond laser processing in water. Light absorption is enhanced by light trapping based on surface geometry changes, and the formation of a mixture of hydrogenated microcrystalline silicon (μc-Si:H) and a-Si:H after crystallization suggests that the overall stability may be increased. Furthermore, the formation mechanism for the surface spikes is discussed. A comparison of absorptance spectra for various surface morphologies and crystallinities shows that the combination of surface texturing and crystallization induced by femtosecond laser processing is very promising for a-Si:H thin film solar cell applications.

Femtosecond Laser-Induced Simultaneous Surface Texturing and Crystallization of a-Si:H Thin Film: Absorption and Crystallinity

2012 ◽  
Vol 134 (3) ◽  
Author(s):  
Hongliang Wang ◽  
Panjawat Kongsuwan ◽  
Gen Satoh ◽  
Y. Lawrence Yao
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Femtosecond Laser ◽  
Laser Processing ◽  
Surface Texturing ◽  
Solar Spectrum ◽  
Nanocrystalline Silicon ◽  
Femtosecond Laser Irradiation ◽  
Surface Geometry ◽  
Femtosecond Laser Processing

Hydrogenated amorphous silicon (a-Si:H) thin films have been considered for use in solar cell applications because of their significantly reduced cost. Their overall efficiency and stability, however, are less than that of their bulk crystalline counterparts. Limited work has been performed on solving the efficiency and stability issues of a-Si:H simultaneously. In this study, both surface texturing and crystallization on a-Si:H thin film are achieved through one-step femtosecond laser processing. The nanoscale conical and pillar-shaped spikes formed on the surface of a-Si:H films by femtosecond laser irradiation in both air and water are presented and enhanced light absorption is observed due to light trapping based on surface geometry changes, while the formation of a mixture of hydrogenated nanocrystalline silicon (nc-Si:H) and a-Si:H after crystallization suggests that the overall material stability can potentially be increased. The relationship among crystallinity, fluence, and scan speed is also discussed. Furthermore, a comparison of absorptance spectra for various surface morphologies is developed. Finally, the absorptance measurement across the solar spectrum shows that the combination of surface texturing and crystallization induced by femtosecond laser processing is very promising for a-Si:H thin film solar cell applications.

scholarly journals Nonlinear refractive index of porcine cornea studied by z-scan and self-focusing during femtosecond laser processing

2010 ◽  
Vol 18 (4) ◽  
pp. 3700 ◽  
Author(s):  
M. Miclea ◽  
U. Skrzypczak ◽  
S. Faust ◽  
F. Fankhauser ◽  
H. Graener ◽  
...  
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Nonlinear Refractive Index ◽  
Laser Processing ◽  
Self Focusing ◽  
Femtosecond Laser Processing ◽  
Porcine Cornea

Femtosecond laser processing of silver-containing glass with optical vortex beams

2014 ◽  
Author(s):  
Konstantin Mishchik ◽  
Yannick Petit ◽  
Etienne Brasselet ◽  
Inka Manek-Hönninger ◽  
Nicolas Marquestaut ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Processing ◽  
Optical Vortex ◽  
Femtosecond Laser Processing ◽  
Vortex Beams

Femtosecond laser processing of protein crystals grown in agarose gel

2009 ◽  
Vol 312 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Hitoshi Hasenaka ◽  
Shigeru Sugiyama ◽  
Mika Hirose ◽  
Noriko Shimizu ◽  
Tomoya Kitatani ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Processing ◽  
Protein Crystals ◽  
Agarose Gel ◽  
Femtosecond Laser Processing

Deep-subwavelength ripples on the ZnO surface obtained via metal-film-assisted femtosecond laser processing

2021 ◽  
pp. 151576
Author(s):  
Yaoyao Liu ◽  
Yuxuan Wang ◽  
Ming Yang ◽  
Qiang Wu ◽  
Zhixuan Li ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Processing ◽  
Metal Film ◽  
Femtosecond Laser Processing
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