Laser Cutting and Micromachining for Localized and Targeted Solar Cell Characterization

Steven Johnston, Dana Kern, George Kroeger

Research output: NRELPoster


Laser cutting and micromachining can be applied to solar cell materials for processing and characterization applications. An ultrashort pulse (USP) laser with sub-picosecond pulse width can remove material with minimal thermal effects or damage, which is termed 'cold ablation'. Such USP laser cutting and scribing can be implemented for isolating areas within a larger cell while maintaining electrical performance and preventing laser-induced damage and shunting. Laser micromachining has been used to isolate a shunt to improve cell performance and to isolate a small, selected area to define a sample suitable for deep level transient spectroscopy.
Original languageAmerican English
StatePublished - 2019

Publication series

NamePresented at the IEEE 46th Photovoltaic Specialist Conference (PVSC), 16-21 June 2019, Chicago, Illinois

NREL Publication Number

  • NREL/PO-5K00-74071


  • cryostats
  • laser cutouts
  • microscopes
  • photovoltaic
  • PV
  • silicon wafer
  • solar cells


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