dc.identifier.uri |
http://dx.doi.org/10.15488/932 |
|
dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/956 |
|
dc.contributor.author |
Altermatt, Pietro P.
|
|
dc.contributor.author |
McIntosh, Keith R.
|
|
dc.date.accessioned |
2016-12-21T14:07:25Z |
|
dc.date.available |
2016-12-21T14:07:25Z |
|
dc.date.issued |
2014 |
|
dc.identifier.citation |
Altermatt, P.P.; McIntosh, K.R.: A roadmap for PERC cell efficiency towards 22%, focused on technology-related constraints. In: Energy Procedia 55 (2014), S. 17-21. DOI: https://doi.org/10.1016/j.egypro.2014.08.004 |
|
dc.description.abstract |
Presently, the crystalline silicon (c-Si) photovoltaic (PV) industry is switching from standard cells to PERC cells to increase cell efficiency from about 18% to about 20%. This paper gives a roadmap for increasing PERC cell efficiency further towards 22%. Which equipment and which process conditions are feasible to go beyond 20% efficiency? To help answer this as generally as possible, we conduct state-of-the-art modelling in which we sweep the inputs that represent major technology-related constraints, such as diffusion depth, metal finger width and height, alignment tolerances, etc. (these are assigned to the x- And y-axes of our graphs). We then predict the optimum device parameters resulting from these restrictions (shown as contour lines). There are many different ways to achieve 22%. Our modelling predicts, for example, that 60 μm wide screen-printed metal fingers are sufficiently narrow if the alignment tolerance (width of the n++ region) is below 90 μm. The rear may be contacted with 30 μm wide openings of the Al2O3/SiNx stack and with local J0,BSF values as high as 900 fA/cm2. If these requirements cannot be met, they may be compensated by improvements in other device parts. Regardless of this, the wafer material requires a SRH lifetime of at least 1 ms at excess carrier densities near 10(14) cm(-3). |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Amsterdam : Elsevier |
|
dc.relation.ispartofseries |
Energy Procedia 55 (2014) |
|
dc.rights |
CC BY-NC-ND 3.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by-nc-nd/3.0/ |
|
dc.subject |
Device modeling |
eng |
dc.subject |
PERC cells |
eng |
dc.subject |
Roadmap |
eng |
dc.subject.classification |
Konferenzschrift |
ger |
dc.subject.ddc |
600 | Technik
|
ger |
dc.subject.ddc |
620 | Ingenieurwissenschaften und Maschinenbau
|
ger |
dc.subject.ddc |
530 | Physik
|
ger |
dc.title |
A roadmap for PERC cell efficiency towards 22%, focused on technology-related constraints |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.issn |
18766102 |
|
dc.relation.doi |
https://doi.org/10.1016/j.egypro.2014.08.004 |
|
dc.bibliographicCitation.volume |
55 |
|
dc.bibliographicCitation.firstPage |
17 |
|
dc.bibliographicCitation.lastPage |
21 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|