Applied Physics A

, Volume 116, Issue 2, pp 671–681 | Cite as

Precise selective scribing of thin-film solar cells by a picosecond laser

  • Xin Zhao
  • Yunfeng Cao
  • Qiong Nian
  • Yung C. ShinEmail author
  • Gary Cheng


In this paper, precise scribing of thin-film solar cells (CIGS/Mo/Glass) via a picosecond laser is investigated. A parametric study is carried out for P1 and P2 scribing to study the effects of laser fluence and overlap ratio on scribing quality and ablation depth. Three ablation regimes are observed for P1 scribing in different laser fluence ranges, due to the involvement of different ablation mechanisms. The optimum scribing conditions are determined for both P1 and P2 scribing, and the potential processing speed is significantly increased. The heat accumulation effect at different repetition rates is studied to extrapolate the results from low to high repetition rates. A two-temperature model-based model is developed to simulate the scribing process for multiple thin films, providing decent prediction of the slot depth for both P1 and P2 scribing.


Repetition Rate Laser Fluence High Repetition Rate Ablation Depth Ablation Mechanism 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors wish to gratefully acknowledge the financial support provided for this study by the National Science Foundation (Grant Nos.: CMMI-1030786, 0853890-CBET).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Xin Zhao
    • 1
    • 2
  • Yunfeng Cao
    • 1
    • 2
  • Qiong Nian
    • 1
    • 3
  • Yung C. Shin
    • 1
    • 2
    Email author
  • Gary Cheng
    • 1
    • 3
  1. 1.Center for Laser-based ManufacturingPurdue UniversityWest LafayetteUSA
  2. 2.School of Mechanical EngineeringPurdue UniversityWest LafayetteUSA
  3. 3.School of Industrial EngineeringPurdue UniversityWest LafayetteUSA

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