Details
| Original language | English |
|---|---|
| Pages (from-to) | 66-71 |
| Number of pages | 6 |
| Journal | Energy Procedia |
| Volume | 43 |
| Publication status | Published - 2013 |
Abstract
We investigate and compare three different fine line printing techniques for the silver front side metallization of industrial-type silicon solar cells: single print, dual print and print-on-print. We obtain finger heights of 5.6 μm for single print, 9.5 μm for dual print and 15.1 μm for print-on-print as well as finger width between 46.2 μm and 61.3 μm. We process PERC solar cells with dual print and print-on-print. For the dual print, we test two different bus bar designs, a standard rectangular shaped bus bar and a segmented bus bar. The resulting PERC solar cells achieve conversion efficiencies of 19.8% for dual print and print-on-print. The dual print with segmented bus bar design reduces the Ag paste consumption to 67.7 mg, measured after printing prior to drying. To our knowledge, this is the lowest front side Ag paste consumption that has been reported so far. Additionally, we model optimum Ag finger width in dependence of electrical and geometrical parameters. We find that even when assuming very optimistic parameters, the optimum finger width of 26 μm is just a factor of two lower compared to the state of the art technology today.
Keywords
- Dual print, Fine line printing, Paste consumption, Print-on-print, Screen-printing
ASJC Scopus subject areas
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In: Energy Procedia, Vol. 43, 2013, p. 66-71.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Record Low Ag Paste Consumption of 67.7 mg with Dual Print
AU - Hannebauer, Helge
AU - Dullweber, Thorsten
AU - Falcon, Tom
AU - Chen, Xiao
AU - Brendel, Rolf
PY - 2013
Y1 - 2013
N2 - We investigate and compare three different fine line printing techniques for the silver front side metallization of industrial-type silicon solar cells: single print, dual print and print-on-print. We obtain finger heights of 5.6 μm for single print, 9.5 μm for dual print and 15.1 μm for print-on-print as well as finger width between 46.2 μm and 61.3 μm. We process PERC solar cells with dual print and print-on-print. For the dual print, we test two different bus bar designs, a standard rectangular shaped bus bar and a segmented bus bar. The resulting PERC solar cells achieve conversion efficiencies of 19.8% for dual print and print-on-print. The dual print with segmented bus bar design reduces the Ag paste consumption to 67.7 mg, measured after printing prior to drying. To our knowledge, this is the lowest front side Ag paste consumption that has been reported so far. Additionally, we model optimum Ag finger width in dependence of electrical and geometrical parameters. We find that even when assuming very optimistic parameters, the optimum finger width of 26 μm is just a factor of two lower compared to the state of the art technology today.
AB - We investigate and compare three different fine line printing techniques for the silver front side metallization of industrial-type silicon solar cells: single print, dual print and print-on-print. We obtain finger heights of 5.6 μm for single print, 9.5 μm for dual print and 15.1 μm for print-on-print as well as finger width between 46.2 μm and 61.3 μm. We process PERC solar cells with dual print and print-on-print. For the dual print, we test two different bus bar designs, a standard rectangular shaped bus bar and a segmented bus bar. The resulting PERC solar cells achieve conversion efficiencies of 19.8% for dual print and print-on-print. The dual print with segmented bus bar design reduces the Ag paste consumption to 67.7 mg, measured after printing prior to drying. To our knowledge, this is the lowest front side Ag paste consumption that has been reported so far. Additionally, we model optimum Ag finger width in dependence of electrical and geometrical parameters. We find that even when assuming very optimistic parameters, the optimum finger width of 26 μm is just a factor of two lower compared to the state of the art technology today.
KW - Dual print
KW - Fine line printing
KW - Paste consumption
KW - Print-on-print
KW - Screen-printing
UR - http://www.scopus.com/inward/record.url?scp=84888323578&partnerID=8YFLogxK
U2 - 10.1016/j.egypro.2013.11.089
DO - 10.1016/j.egypro.2013.11.089
M3 - Article
AN - SCOPUS:84888323578
VL - 43
SP - 66
EP - 71
JO - Energy Procedia
JF - Energy Procedia
SN - 1876-6102
ER -