Details
| Original language | English |
|---|---|
| Pages (from-to) | 109-115 |
| Number of pages | 7 |
| Journal | Energy Procedia |
| Volume | 92 |
| Publication status | Published - Aug 2016 |
| Event | 6th International Conference on Crystalline Silicon Photovoltaics, SiliconPV 2016 - Chambery, France Duration: 7 Mar 2016 → 9 Mar 2016 |
Abstract
Passivated Emitter and Rear Cells (PERC) with efficiencies well above 20% are likely to become the next mass production technology. A quantification of all power loss mechanisms of such industrial PERC cells is helpful in prioritizing future efficiency improvement measures. We report on a numerical simulation of the power losses of a 21.2%-efficient industrial PERC cell using extensive experimental input data. Our synergetic efficiency gain analysis relies on deactivating single power loss mechanisms in the simulation at a time to access the full potential power gain related to that mechanism. The complete analysis therefore explains the efficiency gap between the industrial PERC solar cell and the theoretical maximum efficiency of a crystalline Si solar cell. Based on the simulations, the largest single loss mechanism is front grid shadowing followed by recombination in the emitter and its surface. All individual resistive losses, all individual optical losses and all (avoidable) individual recombination losses sum up to efficiency gains of 0.8%, 1.6%, and 1.3%, respectively, which is 3.7% in total. The efficiency gap between real and ideal solar cell is, however, much larger with 7.3%. The discrepancy is mainly due to the non-linear behaviour of recombination-based power losses which adds synergetic efficiency enhancements.
Keywords
- device simulation, PERC solar cells, power loss analysis, screen-printing
ASJC Scopus subject areas
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In: Energy Procedia, Vol. 92, 08.2016, p. 109-115.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Simulation-based Efficiency Gain Analysis of 21.2%-efficient Screen-printed PERC Solar Cells
AU - Kranz, Christopher
AU - Petermann, Jan H.
AU - Dullweber, Thorsten
AU - Brendel, Rolf
PY - 2016/8
Y1 - 2016/8
N2 - Passivated Emitter and Rear Cells (PERC) with efficiencies well above 20% are likely to become the next mass production technology. A quantification of all power loss mechanisms of such industrial PERC cells is helpful in prioritizing future efficiency improvement measures. We report on a numerical simulation of the power losses of a 21.2%-efficient industrial PERC cell using extensive experimental input data. Our synergetic efficiency gain analysis relies on deactivating single power loss mechanisms in the simulation at a time to access the full potential power gain related to that mechanism. The complete analysis therefore explains the efficiency gap between the industrial PERC solar cell and the theoretical maximum efficiency of a crystalline Si solar cell. Based on the simulations, the largest single loss mechanism is front grid shadowing followed by recombination in the emitter and its surface. All individual resistive losses, all individual optical losses and all (avoidable) individual recombination losses sum up to efficiency gains of 0.8%, 1.6%, and 1.3%, respectively, which is 3.7% in total. The efficiency gap between real and ideal solar cell is, however, much larger with 7.3%. The discrepancy is mainly due to the non-linear behaviour of recombination-based power losses which adds synergetic efficiency enhancements.
AB - Passivated Emitter and Rear Cells (PERC) with efficiencies well above 20% are likely to become the next mass production technology. A quantification of all power loss mechanisms of such industrial PERC cells is helpful in prioritizing future efficiency improvement measures. We report on a numerical simulation of the power losses of a 21.2%-efficient industrial PERC cell using extensive experimental input data. Our synergetic efficiency gain analysis relies on deactivating single power loss mechanisms in the simulation at a time to access the full potential power gain related to that mechanism. The complete analysis therefore explains the efficiency gap between the industrial PERC solar cell and the theoretical maximum efficiency of a crystalline Si solar cell. Based on the simulations, the largest single loss mechanism is front grid shadowing followed by recombination in the emitter and its surface. All individual resistive losses, all individual optical losses and all (avoidable) individual recombination losses sum up to efficiency gains of 0.8%, 1.6%, and 1.3%, respectively, which is 3.7% in total. The efficiency gap between real and ideal solar cell is, however, much larger with 7.3%. The discrepancy is mainly due to the non-linear behaviour of recombination-based power losses which adds synergetic efficiency enhancements.
KW - device simulation
KW - PERC solar cells
KW - power loss analysis
KW - screen-printing
UR - http://www.scopus.com/inward/record.url?scp=85014483973&partnerID=8YFLogxK
U2 - 10.1016/j.egypro.2016.07.038
DO - 10.1016/j.egypro.2016.07.038
M3 - Conference article
AN - SCOPUS:85014483973
VL - 92
SP - 109
EP - 115
JO - Energy Procedia
JF - Energy Procedia
SN - 1876-6102
T2 - 6th International Conference on Crystalline Silicon Photovoltaics, SiliconPV 2016
Y2 - 7 March 2016 through 9 March 2016
ER -