Oct 2026· Advancement of science· 0 citations· 54 references
Medicine
Abstract
ABSTRACT Unbalanced crystallization kinetics in mixed Sn‐Pb perovskite cause film heterogeneity and high defect densities, thereby constraining overall performance and stability, particularly under scalable processing conditions. Here, we investigate nanocrystal‐mediated crystallization regulation in ambient‐processed, slot‐die‐coated narrow‐bandgap Sn‐Pb perovskites by combining CsPbI3 nanocrystal‐assisted processing with time‐resolved in situ grazing‐incidence wide‐angle X‐ray scattering (GIWAXS). After nine ISOS‐T‐3 thermal cycles, the perovskite solar cells (PSCs) fabricated from seeded perovskite films retain 80% of their initial efficiency at 25°C. Operando GIWAXS reveals differences in lattice evolution, residual PbI2 formation, and microstrain accumulation between the control and nanocrystal‐assisted films. By linking scalable processing and crystallization kinetics to the subsequent lattice response under thermal cycling, this work establishes a processing, crystallization, structure, stability relationship for narrow‐bandgap Sn‐Pb perovskites and highlights the importance of controlling early‐stage film formation for thermally robust, scalable perovskite photovoltaics.
All‐perovskite tandem solar cells hold great promise for high power conversion efficiencies. However, their narrow‐bandgap tin‐lead (Sn‐Pb) mixed perovskite subcells often suffer from severe crystallization imbalance under conventional one‐step solution processing, due to the intrinsically different behaviors of Sn...
Li-Shuai Huang, Wei Ai, Jun-Tao Ma et al.· Advanced Functional Material...· 0 citations
Self‐powered photodetectors (SPPDs) with broadband response and high‐resolution weak‐light imaging capabilities are crucial for next‐generation optoelectronics. Quasi‐two‐dimensional (quasi‐2D) Ruddlesden‐Popper perovskites are promising candidates, but their solution‐processed films typically suffer from multiphas...
Flexible perovskite solar cells (f‐PSCs) hold immense promise for next‐generation wearable and portable photovoltaic applications, yet their commercialization is severely impeded by interfacial non‐radiative recombination and insufficient mechanical durability at the SnO2/perovskite interface. Here, we demonstrate a du...
Liang-Fan Chen, Providence Buregeya Ingabire, Ye Zhou et al.· Advanced Functional Material...· 0 citations
The remarkable progress in metal halide perovskite solar cells (PSCs) has propelled perovskite/silicon tandem architectures as a transformative solution in photovoltaics, enabling efficiencies beyond single‐junction limits while offering high specific power and radiation resistance for challenging environments, inclu...
Min-Chao Liu, Bin Jiao, Hua Kong et al.· Advanced Energy Materials· 0 citations
Reducing non‐radiative charge‐carrier recombination at both p‐ and n‐side interfaces of the perovskite layer is crucial for realizing high‐voltage single‐ and multi‐junction solar cells. Herein, it is demonstrated that co‐depositing a mixture of ethane‐1,2‐diammonium iodide and different oleyl‐based amphiphiles ren...
Vishnu Vijayakumar, C. Weijtens, Laura Bellini et al.· Advanced Functional Material...· 0 citations
High‐quality wide‐bandgap (WBG) perovskites are essential top‐cell absorbers for perovskite/silicon tandem cells, yet their stability is limited by light‐induced halide phase segregation and defect evolution. Here, we report a molecular riveting strategy that reinforces surface/interface cation‐octahedron coupling in m...
