TY - GEN
T1 - Novel Foil Interconnects for Back-Contact Silicon Solar Cells
AU - Fisher, Kathryn
AU - Meng, Xiaodong
AU - Hartweg, Barry
AU - Mony, Sujyot
AU - Bertoni, Mariana
AU - Holman, Zachary
N1 - Funding Information:
This material is based upon work supported by the Solar Energy Technologies Office of the US Department of Energy under Award No. DE-EE0007538.
Publisher Copyright:
© 2019 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019/6
Y1 - 2019/6
N2 - Large area back-contact solar cells enable module costs almost as low as those of PERCs but with higher efficiency. Traditional tabbing and stringing interconnects are problematic for back-contact cells, however, as placing all the tabs on one side of the wafer causes bowing due to CTE mismatch. Back-contact cells can be effectively encapsulated using Cu conductive back-sheets (CBS) with electrically conductive adhesive (ECA) interconnects but the cost is higher than for ribbon tabbing. In this paper we present a method for replacing the Cu CBS with a cheaper Al version and the ECA with several cheaper and potentially more robust methods for connecting the foil to the cell.
AB - Large area back-contact solar cells enable module costs almost as low as those of PERCs but with higher efficiency. Traditional tabbing and stringing interconnects are problematic for back-contact cells, however, as placing all the tabs on one side of the wafer causes bowing due to CTE mismatch. Back-contact cells can be effectively encapsulated using Cu conductive back-sheets (CBS) with electrically conductive adhesive (ECA) interconnects but the cost is higher than for ribbon tabbing. In this paper we present a method for replacing the Cu CBS with a cheaper Al version and the ECA with several cheaper and potentially more robust methods for connecting the foil to the cell.
KW - Back-contact modules
KW - aluminum interconnects
KW - conductive adhesives
KW - conductive back-sheets
KW - laser welding
KW - reliability
UR - http://www.scopus.com/inward/record.url?scp=85081586825&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85081586825&partnerID=8YFLogxK
U2 - 10.1109/PVSC40753.2019.8980924
DO - 10.1109/PVSC40753.2019.8980924
M3 - Conference contribution
AN - SCOPUS:85081586825
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 126
EP - 130
BT - 2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 46th IEEE Photovoltaic Specialists Conference, PVSC 2019
Y2 - 16 June 2019 through 21 June 2019
ER -