Veröffentlichungen
2016 |
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B. Lim, T. Brendemühl, T. Dullweber, and R. Brendel IEEE Journal of Photovoltaics 6 (2), 447-453, (2016). Abstract | Links | BibTeX | Schlagwörter: boron, Current density, Layout, Phosphorus, Photovoltaic cells, Resistance, silicon, Simulation @article{Lim2016,
title = {Loss analysis of n-type passivated emitter and rear totally diffused back-junction silicon solar cells with efficiencies up to 21.2%}, author = {B Lim and T Brendemühl and T Dullweber and R Brendel}, doi = {10.1109/JPHOTOV.2016.2520211}, year = {2016}, date = {2016-03-01}, journal = {IEEE Journal of Photovoltaics}, volume = {6}, number = {2}, pages = {447-453}, abstract = {In this work, we present screen-printed n-type passivated emitter rear totally diffused (n-PERT) back-junction (BJ) silicon solar cells with efficiencies up to 21.2% on total area of 239 cm2. The process sequence is based on that of p-type passivated emitter and rear cells (p-PERC), adding only a boron diffusion at the beginning. We reduce the recombination at the homogeneous phosphorus-doped front surface field by a wet-chemical etch-back of 10-20 nm and apply an advanced five-busbar layout on the front side to increase the energy conversion efficiency. We simulate the performance of the n-PERT BJ solar cell using the conductive boundary model and perform a synergistic efficiency gain analysis to identify the main limitations of our n-PERT BJ solar cells. We observe the biggest gain of 0.72% absolute after eliminating recombination at the P-doped front surface field and find that reducing recombination in general is most important for further improving our n-PERT BJ solar cells.}, keywords = {boron, Current density, Layout, Phosphorus, Photovoltaic cells, Resistance, silicon, Simulation}, pubstate = {published}, tppubtype = {article} } In this work, we present screen-printed n-type passivated emitter rear totally diffused (n-PERT) back-junction (BJ) silicon solar cells with efficiencies up to 21.2% on total area of 239 cm2. The process sequence is based on that of p-type passivated emitter and rear cells (p-PERC), adding only a boron diffusion at the beginning. We reduce the recombination at the homogeneous phosphorus-doped front surface field by a wet-chemical etch-back of 10-20 nm and apply an advanced five-busbar layout on the front side to increase the energy conversion efficiency. We simulate the performance of the n-PERT BJ solar cell using the conductive boundary model and perform a synergistic efficiency gain analysis to identify the main limitations of our n-PERT BJ solar cells. We observe the biggest gain of 0.72% absolute after eliminating recombination at the P-doped front surface field and find that reducing recombination in general is most important for further improving our n-PERT BJ solar cells.
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