TY - JOUR
T1 - Heat mitigation in perovskite solar cells
T2 - The role of grain boundaries
AU - Mehdizadeh-Rad, Hooman
AU - Mehdizadeh-Rad, Farhad
AU - Zhu, Furong
AU - Singh, Jai
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2021/1
Y1 - 2021/1
N2 - We have simulated a perovskite solar cell by developing a comprehensive mathematical model which incorporates drift-diffusion and heat transfer equations. This model incorporates all the heat transfer mechanisms, including the thermal power generation due to the tail state recombination and thermalization of charge carriers. Our model is validated by calculating the current-voltage characteristics of a PSC of the structure of Glass/PEDOT: PSS/CH3NH3PbI3/PC60BM/Al and finding it in very good agreement with the experimental results. The influence of grain boundary diameter on the operating temperature of the PSC is investigated in detail. It is found that by increasing the diameter of the grain boundaries, the operating temperature of the PSC decreases at higher voltages and the open circuit voltage increases slightly. The thermal power generated by the thermalization is found to play the dominant role in the operating temperature followed by the thermal power generated at the grain boundaries due to the highest tail state recombination in the region. This study is expected to provide a deeper understanding about different factors that influence the operating temperature of perovskite solar cells.
AB - We have simulated a perovskite solar cell by developing a comprehensive mathematical model which incorporates drift-diffusion and heat transfer equations. This model incorporates all the heat transfer mechanisms, including the thermal power generation due to the tail state recombination and thermalization of charge carriers. Our model is validated by calculating the current-voltage characteristics of a PSC of the structure of Glass/PEDOT: PSS/CH3NH3PbI3/PC60BM/Al and finding it in very good agreement with the experimental results. The influence of grain boundary diameter on the operating temperature of the PSC is investigated in detail. It is found that by increasing the diameter of the grain boundaries, the operating temperature of the PSC decreases at higher voltages and the open circuit voltage increases slightly. The thermal power generated by the thermalization is found to play the dominant role in the operating temperature followed by the thermal power generated at the grain boundaries due to the highest tail state recombination in the region. This study is expected to provide a deeper understanding about different factors that influence the operating temperature of perovskite solar cells.
KW - Grain boundaries
KW - Operating temperature
KW - Perovskite solar cells
KW - Thermalization
UR - http://www.scopus.com/inward/record.url?scp=85092359885&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2020.110837
DO - 10.1016/j.solmat.2020.110837
M3 - Article
AN - SCOPUS:85092359885
SN - 0165-1633
VL - 220
SP - 1
EP - 6
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
M1 - 110837
ER -
