Non-Contact Printed Aluminum Metallization of Si Photovoltaic Devices
Alternative solution-based techniques such as aerosol jet printing offer the dual benefits of contactless pattern deposition and high material utilization. We have used aerosol jet printing to investigate non-contact printed Al metal ink as a replacement for screen printed Al back contacts on wafer Si solar cells. This particle-based ink can be prepared at high loadings of 60 weight % metal, which enables rapid deposition of 1 - 10 um thick lines. Al lines printed on Si wafers and heated between 550 and 800 degrees C form low resistance contacts suitable for current extraction. The effectiveness of these printed Al back contacts has further been demonstrated by incorporating them into a series of 21 cm2 crystalline Si solar cells that produced a champion power conversion efficiencyof 13%.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1044456
- Report Number(s):
- NREL/CP-5200-54171
- Journal Information:
- Conference Record of the IEEE Photovoltaic Specialists Conference, Journal Name: Conference Record of the IEEE Photovoltaic Specialists Conference Vol. 2012; ISSN 0160-8371
- Publisher:
- IEEE
- Country of Publication:
- United States
- Language:
- English
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