Non-Contact Printed Aluminum Metallization of Si Photovoltaic Devices: Preprint

Research output: Contribution to conferencePaper

Abstract

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%.
Original languageAmerican English
Number of pages5
StatePublished - 2012
Event2012 IEEE Photovoltaic Specialists Conference - Austin, Texas
Duration: 3 Jun 20128 Jun 2012

Conference

Conference2012 IEEE Photovoltaic Specialists Conference
CityAustin, Texas
Period3/06/128/06/12

NREL Publication Number

  • NREL/CP-5200-54171

Keywords

  • aluminum
  • photovoltaic cells
  • printing
  • silicon

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