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Journal of Polymer Research

, 20:277 | Cite as

Effect of polymer binders in screen printing technique of silver pastes

  • Chien P. Hsu
  • Rong H. Guo
  • Chi C. Hua
  • Cheng-L. Shih
  • Wei-T. Chen
  • Tien-I Chang
Original Paper

Abstract

Silver pastes are widely used in the front-side metallization of crystalline silicon solar cells via screen printing technique, with an aim to print conductive lines bearing a high aspect ratio which helps reduce electric resistance and improve the overall device efficiency. Rheological features are very important to describe the paste behaviors during screen printing as well as in the formation of fine conductive lines on wafer substrate. In this study, three different silver pastes and two individual components (i.e., silver powder and polymer binder) have been systematically investigated, revealing how the altering rheological features due to the addition of polymer binders—despite a typically low weight percentage—can significantly impact the (simulated) printing quality of a silver paste. The results point to the imperative need to delve into the effects of polymer species, polymer molecular weight and its weight percentage in order to systematically improve the printing performance of metal pastes without altering its main (powders) component.

Keywords

Silicon solar cell Screen printing Silver paste Polymer binder Rheology 

Notes

Acknowledgments

This research was partially supported by National Science Council of ROC under grant number 100-2622-E-194-004-CC3, and partially supported by Darfon Electronics Corp. of ROC

Supplementary material

10965_2013_277_MOESM1_ESM.pdf (528 kb)
ESM 1 (PDF 527 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Chien P. Hsu
    • 1
  • Rong H. Guo
    • 1
  • Chi C. Hua
    • 1
  • Cheng-L. Shih
    • 2
  • Wei-T. Chen
    • 2
  • Tien-I Chang
    • 2
  1. 1.Department of Chemical EngineeringNational Chung Cheng UniversityChiayiRepublic of China
  2. 2.Darfon Electronics Corp.TainanRepublic of China

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