Laser Cutting and Micromachining for Localized and Targeted Solar Cell Characterization

Conference · Tue Jun 25 00:00:00 EDT 2019

OSTI ID:1530707

Johnston, Steven ^[1]; Sulas, Dana ^[1]; Kroeger, George F. ^[2]

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1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
2. Kroeger Inc., Phoenix AZ

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.

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1530707
• Report Number(s): NREL/PO-5K00-74071
• Resource Relation: Conference: Presented at the IEEE 46th Photovoltaic Specialist Conference (PVSC), 16-21 June 2019, Chicago, Illinois
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
solar cells
photovoltaic
PV
laser cutouts
microscopes
cryostats
silicon wafer