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http://dx.doi.org/10.3795/KSME-B.2012.36.11.1135

Mask Patterning for Two-Step Metallization Processes of a Solar Cell and Its Impact on Solar Cell Efficiency  

Lee, Chang-Joon (Dept. of Graphic Arts Information Engineering, Pukyong Nat'l Univ.)
Shin, Dong-Youn (Dept. of Graphic Arts Information Engineering, Pukyong Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.36, no.11, 2012 , pp. 1135-1140 More about this Journal
Abstract
Two-step metallization processes have been proposed to achieve high-efficiency silicon solar cells, where the front-side grids are formed by silver plating after the formation of a nickel seed layer with a mask. Because the conventional mask patterning process is performed by an expensive selective printing method using either UV resist or phase change ink, however, the combination of a simple coating and laser-selective ablation processes is proposed in this study as an alternative means. As a masking material, the solar cell wafer was coated with either inexpensive wax having a low melting temperature or a fluorocarbon solution, and then, an electrode image was patterned by selectively removing the masking material using the laser. It was found that the fluorocarbon coating was not only superior to the wax coating in terms of pattern uniformity but it also increased the efficiency of the solar cell by 0.16%, as confirmed by statistical f and t tests.
Keywords
Solar Cell; Two Step Metallization; Laser Ablation;
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Times Cited By KSCI : 1  (Citation Analysis)
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