ArticleSmall (Weinheim an der Bergstrasse, Germany)2026
Synergistic Graphene Polishing Enabling van der Waals Anchors for Efficient and Robust Carbon-Based Perovskite Solar Cells.
Article in Small (Weinheim an der Bergstrasse, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Carbon-based perovskite solar cells (C-PSCs) offer a low-cost, stable alternative to metal electrodes; however, the high porosity of carbon electrodes leads to poor interfacial contact and weak mechanical adhesion to the underlying carrier transport layer, limiting device performance and robustness. Here, we report a solvent-free additive polishing strategy using a synergistic combination of two-dimensional (2D) graphene nanoplatelets and 3D graphite flakes to densify the hole-transport-layer (HTL)/carbon interface by creating conformal van der Waals (vdW) anchors. This graphene/graphite additive polishing process fills micro-voids on the porous carbon electrode surface, reduces carbon electrode surface roughness, and creates a graphene anchor that increases interfacial fracture energy and promotes the carbon surface heating release. Electrically, the polished interface facilitates superior charge extraction, thereby reducing charge-transfer resistance. Consequently, regular n-i-p perovskite solar devices achieve a promised power conversion efficiency (PCE) of 23.28% (0.09 cm
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