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Efficiency Potential of P-Type PERT vs. PERC Solar Cells

: Meier, S.; Wasmer, S.; Fell, A.; Wöhrle, N.; Greulich, J.; Wolf, A.


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 : A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC, 10-15 June 2018, Waikoloa Village, HI, USA
Piscataway, NJ: IEEE, 2018
ISBN: 978-1-5386-8529-7
ISBN: 978-1-5386-8530-3
World Conference on Photovoltaic Energy Conversion (WCPEC) <7, 2018, Waikoloa/Hawaii>
Photovoltaic Specialists Conference (PVSC) <45, 2018, Waikoloa/Hawaii>
Photovoltaic Science and Engineering Conference (PVSEC) <28, 2018, Waikoloa/Hawaii>
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <34, 2018, Waikoloa/Hawaii>
Conference Paper
Fraunhofer ISE ()
Photovoltaik; Silicium-Photovoltaik; Dotierung und Diffusion; Oberflächen: Konditionierung; Passivierung; Lichteinfang; Messtechnik und Produktionskontrolle; metamodel; PERC; PERT; simulation; Quokka3

We present an efficiency potential analysis of passivated emitter and rear cells (PERC) and passivated emitter and rear totally diffused (PERT) cells, based on numerical simulations covering a wide range of parameters using a state-of-the-art design of experiment and metamodeling approach. We make full use of the metamodel and optimize the rear contact distance in each simulation by defining it as a free variable. PERT solar cells are simulated respecting free carrier absorption at the boron doped back surface field (BSF). As a result, PERC cells show the highest overall efficiency at a low base resistivity of ρ b = 0.5 Ωcm, whereas for ρ b > 1.5 Ωcm PERT cells exceed the efficiency of the respective PERC cells.