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Abstract The development of molecule-based selective contacts has boosted the power conversion efficiencies of inverted perovskite solar cells. However, these molecular films, often assembled as monolayer or multiple layers on the substrate, are prone to molecular desorption and structural deformation, limiting the long-term stability of devices.
Keywords perovskite photovoltaics device stability inorganic passivation Get full text access Log in, subscribe or purchase for full access. References 1. Tang, H. ∙ Shen, Z. ∙ Shen, Y. ... Reinforcing self-assembly of hole transport molecules for stable inverted perovskite solar cells Science. 2024; 383:1236-1240 2. Liang, Z. ∙ Zhang, Y. ∙ Xu, H. ... Homogenizing out-of-plane cation composition in perovskite solar cells Nature. 2023; 624:557-563 3. Shen, Y. ∙ Zhang, T. ∙ Xu, G. ...
Abstract Flexible perovskite/Cu(In,Ga)Se2 (CIGS) tandems offer a path to high-efficiency and lightweight photovoltaics. However, simultaneously achieving high efficiency and mechanical durability remains a challenge. A contributing factor is the interfacial inhomogeneity arising from molecular aggregation in planar carbazole-based hole-selective contacts (HSCs) on flexible substrates.
Graphical Abstract An integrated strategy combing the cation redox regulation and cation interaction regulation was reported to address the Jahn–Teller distortion and phase transition issues existed in layered cathodes. Impressively, our proposed cathode realized excellent cycling stability with an extremely low strain change of 0.53 %, even under deep sodium extraction/insertion operation conditions.
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