Journal
ACS APPLIED ENERGY MATERIALS
Volume 4, Issue 8, Pages 7481-7486Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.1c01090
Keywords
perovskite solar cells; low-temperature; mesoporous; SnO2; electron transport layer
Funding
- National Natural Science Foundation of China [22005034, 21701015, 21811530054]
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A novel polymer network modified mesoporous SnO2 layer is introduced to improve passivation quality while maintaining efficient charge transportation in perovskite solar cells.
The rise of perovskite solar cell performance lies in the increase of fill factor and open-circuit voltage, which depend on high film quality (shunt resistance) and efficient charge transportation (series resistance). Polymer passivation could suppress the film defects, while its poor conductivity leads to a trade-off between passivation quality and series resistance. Here we introduce a polymer network modified mesoporous SnO2 layer to reconcile this contradiction, in which the mesoporous SnO2 was partially coated by the passivation polymer. Electrons can be extracted through the exposed surface of the mesoporous layer, thus realizing high passivation quality and efficient charge transport simultaneously.
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