2 research outputs found
Supporting information from A helical perylene diimide-based acceptor for non-fullerene organic solar cells: synthesis, morphology and exciton dynamics
Synthesis and Characterization detail
Influence of Hot Spot Heating on Stability of Large Size Perovskite Solar Module with a Power Conversion Efficiency of ∼14%
Making
perovskite solar cell technology commercially viable is facing a challenge
that scaling-up of a small device always experiences a substantial
reduction in power conversion efficiency (PCE). In this research,
we adopted a volume expansion routine to scale-up from a 0.16 cm<sup>2</sup> laboratory-scale device to large size perovskite solar module
(PSM) with a PCE loss of 8% and reached a certified PCE of 13.98%.
The PCE of the PSM with Au electrode dropped about 40% of the initial
efficiency after 16 days’ storage, while the efficiency of
PSM with Cu as counter electrode retained 90% of the initial after
30 days’ storage. We also introduced hot spots heating (HSH)
characterization method to investigate the stability of PSM. HSH reveals
that Cu electrode greatly reduces numbers of hot spots and extent
of temperature increase in a PSM compared with Au electrode. Therefore,
counter electrode also plays an important role in the stability improvement
of PSM