Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector

DAC?AA into SnO2 colloids favors the crystalline phase and preferential orientation along high?oriented (101) and (200) crystal planes by reducing surface absorption energy and modulating crystal thermodynamics, promoting heating transfer rate in the flexible PEN substrate and favoring perovskite/SnO2 lattice matching. The f?PSCs fabricated in full?air conditions produce an efficiency of 23.87% and exceptional mechanical stability.Tin (IV) oxide (SnO2) electron transport layer (ETL) emerges as the most promising n?type semiconductor material for flexible perovskite solar cells (f?PSCs). The (110) facet?dominated SnO2 colloids are readily created, whereas other best?performing (101) and (200) facets?dominated ones with superior potential in interface modulation and lattice matching remain insufficiently explored. Here water?soluble acryloyloxyethyltrimethyl ammonium chloride?acrylamine (DAC?AA) doping into SnO2 colloids produces more (101)? and (200)?oriented crystal domains through lowering surface absorption energy and offering additional thermodynamic driving force. Theoretical and experimental analyses corroborate that the grain preference orientation induced by DAC?AA modification strengthens heating transfer rate on the flexible substrate and favors lattice matching of perovskite (100) plane on SnO2 (101) and (200) facets. Accordingly, the champion f?PSCs on high?oriented SnO2?DAC?AA ETLs fabricated fully in ambient air conditions achieve the efficiencies of 23.87% and 22.41% with aperture areas of 0.092 and 1 cm2. In parallel, the propitious interfacial lattice arrangement attenuates the formation of micro?strain inside perovskite films, maintaining 92.5% of their initial performance after 10 000 bending cycles with a curvature radius of 6 mm.

» Publication Date: 16/04/2025

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