Details
| Original language | English |
|---|---|
| Article number | 6423774 |
| Pages (from-to) | 702-708 |
| Number of pages | 7 |
| Journal | IEEE Journal of Photovoltaics |
| Volume | 3 |
| Issue number | 2 |
| Publication status | Published - 30 Jan 2013 |
Abstract
In this paper, we report and discuss several strategies to produce solar cell front contacts by full-area metallization and etching (FAME). Our chemically structured contacts consume less expensive silver than screen-printed contacts. As a proof of principle for the FAME approach, we present a 148.6-cm 2-sized silicon solar cell that has about 100-μm-wide front-side fingers. These fingers consist of a 15-μm-thick evaporated aluminum layer, supplying the electrical conductance, and a sputtered capping stack (200 nm Ni:V plus 20 nm Ag), providing solderability. The entire metal stack is first deposited on the full area of the solar cells, then locally protected by a wax pattern, and subsequently etched with commercial Ni:V etch and NaOH. The efficiency of the best solar cell is 19.3%, the fill factor is 78%, the open-circuit voltage is 666 mV, and the short-circuit current density is 37.1 mA/cm2.
Keywords
- Etching, metallization, photovoltaic cells
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Electrical and Electronic Engineering
Sustainable Development Goals
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In: IEEE Journal of Photovoltaics, Vol. 3, No. 2, 6423774, 30.01.2013, p. 702-708.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Aluminum Evaporation and Etching for the Front-Side Metallization of Solar Cells
AU - Eidelloth, Stefan
AU - Heinemeyer, Frank
AU - Münster, Daniel
AU - Brendel, Rolf
PY - 2013/1/30
Y1 - 2013/1/30
N2 - In this paper, we report and discuss several strategies to produce solar cell front contacts by full-area metallization and etching (FAME). Our chemically structured contacts consume less expensive silver than screen-printed contacts. As a proof of principle for the FAME approach, we present a 148.6-cm 2-sized silicon solar cell that has about 100-μm-wide front-side fingers. These fingers consist of a 15-μm-thick evaporated aluminum layer, supplying the electrical conductance, and a sputtered capping stack (200 nm Ni:V plus 20 nm Ag), providing solderability. The entire metal stack is first deposited on the full area of the solar cells, then locally protected by a wax pattern, and subsequently etched with commercial Ni:V etch and NaOH. The efficiency of the best solar cell is 19.3%, the fill factor is 78%, the open-circuit voltage is 666 mV, and the short-circuit current density is 37.1 mA/cm2.
AB - In this paper, we report and discuss several strategies to produce solar cell front contacts by full-area metallization and etching (FAME). Our chemically structured contacts consume less expensive silver than screen-printed contacts. As a proof of principle for the FAME approach, we present a 148.6-cm 2-sized silicon solar cell that has about 100-μm-wide front-side fingers. These fingers consist of a 15-μm-thick evaporated aluminum layer, supplying the electrical conductance, and a sputtered capping stack (200 nm Ni:V plus 20 nm Ag), providing solderability. The entire metal stack is first deposited on the full area of the solar cells, then locally protected by a wax pattern, and subsequently etched with commercial Ni:V etch and NaOH. The efficiency of the best solar cell is 19.3%, the fill factor is 78%, the open-circuit voltage is 666 mV, and the short-circuit current density is 37.1 mA/cm2.
KW - Etching
KW - metallization
KW - photovoltaic cells
UR - http://www.scopus.com/inward/record.url?scp=84875627372&partnerID=8YFLogxK
U2 - 10.1109/JPHOTOV.2013.2239361
DO - 10.1109/JPHOTOV.2013.2239361
M3 - Article
AN - SCOPUS:84875627372
VL - 3
SP - 702
EP - 708
JO - IEEE Journal of Photovoltaics
JF - IEEE Journal of Photovoltaics
SN - 2156-3381
IS - 2
M1 - 6423774
ER -