Details
| Original language | English |
|---|---|
| Pages (from-to) | 675-679 |
| Number of pages | 5 |
| Journal | Physica Status Solidi - Rapid Research Letters |
| Volume | 8 |
| Issue number | 8 |
| Early online date | 3 Jun 2014 |
| Publication status | Published - Aug 2014 |
Abstract
We evaluate industrial-type PERC solar cells applying a 5 busbar front grid and fineline-printed Ag fingers. We obtain finger widths down to 46 μm when using a stencil with 40 μm opening for the finger print, whereas the busbar is printed in a separate printing step with a different Ag paste (dual print). This compares to finger widths of 62 μm to 66 μm when applying print-on-print. The 5 busbar front grid with the best dual print process reduces the shadowing loss of the front grid to 4.0% compared to 5.8% for a conventional 3 busbar front grid printed with print-on-print. The 1.8% reduction in shadowing loss results in equal parts from the reduced finger width with dual print as well as from a reduced total busbar width of the 5 busbar design. The resulting PERC solar cells with 5 busbars demonstrate independently confirmed conversion efficiencies of 21.2% compared to 20.6% efficiency of the 3 busbar PERC solar cell. The increased conversion efficiency is primarily due to an increased short-circuit current resulting from the reduced shadowing loss. To our knowledge, 21.2% conversion efficiency is the highest value reported so far for industry typical silicon solar cells with printed metal front and rear contacts.
Keywords
- Efficiency, Passivated emitter and rear cells, Silicon, Solar cells
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physica Status Solidi - Rapid Research Letters, Vol. 8, No. 8, 08.2014, p. 675-679.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - 21.2%-efficient fineline-printed PERC solar cell with 5 busbar front grid
AU - Hannebauer, Helge
AU - Dullweber, Thorsten
AU - Baumann, Ulrike
AU - Falcon, Tom
AU - Brendel, Rolf
N1 - Acknowledgements We thank our colleagues at ISFH for support in solar cell processing. This work was funded by the German Federal Ministry for the Environment, Nature Conserva-tion and Nuclear Safety within the R&D project HighScreen and by our industry partners SolarWorld, Heraeus, Singulus Tech-nologies, and Rena.
PY - 2014/8
Y1 - 2014/8
N2 - We evaluate industrial-type PERC solar cells applying a 5 busbar front grid and fineline-printed Ag fingers. We obtain finger widths down to 46 μm when using a stencil with 40 μm opening for the finger print, whereas the busbar is printed in a separate printing step with a different Ag paste (dual print). This compares to finger widths of 62 μm to 66 μm when applying print-on-print. The 5 busbar front grid with the best dual print process reduces the shadowing loss of the front grid to 4.0% compared to 5.8% for a conventional 3 busbar front grid printed with print-on-print. The 1.8% reduction in shadowing loss results in equal parts from the reduced finger width with dual print as well as from a reduced total busbar width of the 5 busbar design. The resulting PERC solar cells with 5 busbars demonstrate independently confirmed conversion efficiencies of 21.2% compared to 20.6% efficiency of the 3 busbar PERC solar cell. The increased conversion efficiency is primarily due to an increased short-circuit current resulting from the reduced shadowing loss. To our knowledge, 21.2% conversion efficiency is the highest value reported so far for industry typical silicon solar cells with printed metal front and rear contacts.
AB - We evaluate industrial-type PERC solar cells applying a 5 busbar front grid and fineline-printed Ag fingers. We obtain finger widths down to 46 μm when using a stencil with 40 μm opening for the finger print, whereas the busbar is printed in a separate printing step with a different Ag paste (dual print). This compares to finger widths of 62 μm to 66 μm when applying print-on-print. The 5 busbar front grid with the best dual print process reduces the shadowing loss of the front grid to 4.0% compared to 5.8% for a conventional 3 busbar front grid printed with print-on-print. The 1.8% reduction in shadowing loss results in equal parts from the reduced finger width with dual print as well as from a reduced total busbar width of the 5 busbar design. The resulting PERC solar cells with 5 busbars demonstrate independently confirmed conversion efficiencies of 21.2% compared to 20.6% efficiency of the 3 busbar PERC solar cell. The increased conversion efficiency is primarily due to an increased short-circuit current resulting from the reduced shadowing loss. To our knowledge, 21.2% conversion efficiency is the highest value reported so far for industry typical silicon solar cells with printed metal front and rear contacts.
KW - Efficiency
KW - Passivated emitter and rear cells
KW - Silicon
KW - Solar cells
UR - http://www.scopus.com/inward/record.url?scp=84905906224&partnerID=8YFLogxK
U2 - 10.1002/pssr.201409190
DO - 10.1002/pssr.201409190
M3 - Article
AN - SCOPUS:84905906224
VL - 8
SP - 675
EP - 679
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
SN - 1862-6254
IS - 8
ER -