TY - GEN
T1 - Sentaurus Simulation of Monolithic Solar Cells with High Open-Circuit Voltage
AU - Xue, Shujian
AU - Augusto, Andre
AU - Bowden, Stuart G.
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - The integration of multiple solar cells in series in a single wafer increases the output voltage, and reduces the output current. With this new concept we can power small appliances with a single wafer, and if these solar cells are integrated in a larger module the series resistance losses are mitigated. To isolate the individual cells, we space them apart in the wafer. The challenge is to optimize the spacing between cells to balance the short-circuit losses with leakages (narrow spacing). Increasing the surface recombination in the intercell region reduces the effect of leakage current, reducing the spacing between cell leading to higher current. Although initially simulations of monolithic solar cell only have less than 15 of efficiency, the new design can improve the efficiency to over 20. The new design increased the leakage resistance between the parallel cells which decreased the leakage current to less than 10 of the original value and increase the FF from 58.9 to 79.8.
AB - The integration of multiple solar cells in series in a single wafer increases the output voltage, and reduces the output current. With this new concept we can power small appliances with a single wafer, and if these solar cells are integrated in a larger module the series resistance losses are mitigated. To isolate the individual cells, we space them apart in the wafer. The challenge is to optimize the spacing between cells to balance the short-circuit losses with leakages (narrow spacing). Increasing the surface recombination in the intercell region reduces the effect of leakage current, reducing the spacing between cell leading to higher current. Although initially simulations of monolithic solar cell only have less than 15 of efficiency, the new design can improve the efficiency to over 20. The new design increased the leakage resistance between the parallel cells which decreased the leakage current to less than 10 of the original value and increase the FF from 58.9 to 79.8.
KW - Sentaurus simulation
KW - leakage current
KW - monolithic cell
KW - surface recombination
UR - http://www.scopus.com/inward/record.url?scp=85094899183&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85094899183&partnerID=8YFLogxK
U2 - 10.1109/PVSC40753.2019.9198961
DO - 10.1109/PVSC40753.2019.9198961
M3 - Conference contribution
AN - SCOPUS:85094899183
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 3451
EP - 3455
BT - 2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 46th IEEE Photovoltaic Specialists Conference, PVSC 2019
Y2 - 16 June 2019 through 21 June 2019
ER -