Crystallographic Insights into the Structural Heterogeneities of 2D Ruddlesden‐Popper Perovskite Films DOI Creative Commons
Fei Zheng, Sergey Rubanov, Christopher R. Hall

et al.

Advanced Materials Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Abstract 2D Ruddlesden‐Popper phase perovskites (RPPs) offer significant potential for next‐generation photovoltaics owing to their excellent intrinsic stability. Fully understanding the crystalline configuration of perovskite films is essential further enhancing power‐conversion‐efficiency (PCE) solar cells (2D‐PSCs). Herein, structural heterogeneities, including profiles crystal orientation and defect distribution, at both microscopic mesoscopic scales are investigated. Empty voids observed in buried interface associated with Brownian tree‐shaped dendritic structures, orientations RPPs upper lower parts these areas mismatched. This hinders charge carrier transport along vertical direction likely responsible PCE 2D‐PSCs compared 3D counterparts. The formation mechanism mismatching revealed based on compositional analysis. results suggest that synchronizing rate crystallization different film may eliminate thereby reduce gap between 2D‐ 3D‐PSCs. work provides a comprehensive crystallographic heterogeneities films, highlighting new pathways design more efficient RPP films.

Language: Английский

Crystallographic Insights into the Structural Heterogeneities of 2D Ruddlesden‐Popper Perovskite Films DOI Creative Commons
Fei Zheng, Sergey Rubanov, Christopher R. Hall

et al.

Advanced Materials Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Abstract 2D Ruddlesden‐Popper phase perovskites (RPPs) offer significant potential for next‐generation photovoltaics owing to their excellent intrinsic stability. Fully understanding the crystalline configuration of perovskite films is essential further enhancing power‐conversion‐efficiency (PCE) solar cells (2D‐PSCs). Herein, structural heterogeneities, including profiles crystal orientation and defect distribution, at both microscopic mesoscopic scales are investigated. Empty voids observed in buried interface associated with Brownian tree‐shaped dendritic structures, orientations RPPs upper lower parts these areas mismatched. This hinders charge carrier transport along vertical direction likely responsible PCE 2D‐PSCs compared 3D counterparts. The formation mechanism mismatching revealed based on compositional analysis. results suggest that synchronizing rate crystallization different film may eliminate thereby reduce gap between 2D‐ 3D‐PSCs. work provides a comprehensive crystallographic heterogeneities films, highlighting new pathways design more efficient RPP films.

Language: Английский

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