论文信息 - Analysis of the laser ablation processes for thin-film silicon solar cells

Analysis of the laser ablation processes for thin-film silicon solar cells

A detailed analysis of the monolithical series connection of thin-film silicon modules with ZnO/Ag back contact is presented. In this study, pulsed lasers with wavelengths of 1064 nm and 532 nm were used. The influence of various laser parameters like laser power, pulse overlap, etc., on the different patterning steps is discussed. The focus of this study was on the back contact patterning process. Here (i) the flake formation process during the ablation and (ii) the influence of a NIR-laser source as an alternative approach to the green laser were investigated in detail. The latter would reduce system costs if only one NIR-laser source could be used for all patterning steps.

[1] Alvin D. Compaan,et al. Laser scribing of polycrystalline thin films , 2000 .

[2] T. Suezaki,et al. Thin film silicon solar cell and module , 2005, Conference Record of the Thirty-first IEEE Photovoltaic Specialists Conference, 2005..

[3] Bernd Rech,et al. Challenges in microcrystalline silicon based solar cell technology , 2006 .

[4] Helmut Stiebig,et al. Influence of the laser parameters on the patterning quality of thin-film silicon modules , 2007, SPIE Optics + Photonics for Sustainable Energy.

[5] Helmut Stiebig,et al. High speed laser processing for monolithical series connection of silicon thin-film modules , 2008 .