We observe its existence through the perovskite layer showing a decreasing trend from the buried interface to the top surface, effectively transferring heat and lowering the surface temperature by around 5 °C under illumination. o- CB also facilitates hole extraction at the perovskite/PEDOT:PSS interface and reduces charge recombination.
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Sustainable thermal regulation improves stability and efficiency in all-perovskite tandem solar cells.
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