Details
| Original language | English |
|---|---|
| Article number | 7565514 |
| Pages (from-to) | 1413-1420 |
| Number of pages | 8 |
| Journal | IEEE journal of photovoltaics |
| Volume | 6 |
| Issue number | 6 |
| Early online date | 13 Sept 2016 |
| Publication status | Published - Nov 2016 |
Abstract
Highly doped junctions of a Si solar cell function as membranes that block minority carriers and, at the same time, provide a high conductivity for transporting majority carriers to the contacts. They are thus said to be selective contacts. We propose a quantitative definition for the selectivity of contacts. The selectivity provides a figure of merit for electron and hole contacts that is helpful in designing solar cells and in identifying the efficiency limiting components. Applying the definition of selectivity to poly-Si junctions reveals that the root cause of their high selectivity is the highly asymmetric carrier concentration rather than a specific contact geometry.
Keywords
- Junctions, passivated emitter and rear cell (PERC), principle of solar cells, selective contacts
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
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In: IEEE journal of photovoltaics, Vol. 6, No. 6, 7565514, 11.2016, p. 1413-1420.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Contact Selectivity and Efficiency in Crystalline Silicon Photovoltaics
AU - Brendel, Rolf
AU - Peibst, Robby
PY - 2016/11
Y1 - 2016/11
N2 - Highly doped junctions of a Si solar cell function as membranes that block minority carriers and, at the same time, provide a high conductivity for transporting majority carriers to the contacts. They are thus said to be selective contacts. We propose a quantitative definition for the selectivity of contacts. The selectivity provides a figure of merit for electron and hole contacts that is helpful in designing solar cells and in identifying the efficiency limiting components. Applying the definition of selectivity to poly-Si junctions reveals that the root cause of their high selectivity is the highly asymmetric carrier concentration rather than a specific contact geometry.
AB - Highly doped junctions of a Si solar cell function as membranes that block minority carriers and, at the same time, provide a high conductivity for transporting majority carriers to the contacts. They are thus said to be selective contacts. We propose a quantitative definition for the selectivity of contacts. The selectivity provides a figure of merit for electron and hole contacts that is helpful in designing solar cells and in identifying the efficiency limiting components. Applying the definition of selectivity to poly-Si junctions reveals that the root cause of their high selectivity is the highly asymmetric carrier concentration rather than a specific contact geometry.
KW - Junctions
KW - passivated emitter and rear cell (PERC)
KW - principle of solar cells
KW - selective contacts
UR - http://www.scopus.com/inward/record.url?scp=84994777354&partnerID=8YFLogxK
U2 - 10.1109/JPHOTOV.2016.2598267
DO - 10.1109/JPHOTOV.2016.2598267
M3 - Article
AN - SCOPUS:84994777354
VL - 6
SP - 1413
EP - 1420
JO - IEEE journal of photovoltaics
JF - IEEE journal of photovoltaics
SN - 2156-3381
IS - 6
M1 - 7565514
ER -