Solar energy paper index
Multisite Polymer Regulates Crystallization for Low‐Strain Perovskite Film
One-line summary
A solar energy research paper on Multisite Polymer Regulates Crystallization for Low‐Strain Perovskite Film.
Engineering notes
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Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Defect‐induced lattice distortion represents a primary origin of lattice strain in perovskite films. Relieving this strain is essential for improving both the efficiency and stability of perovskite solar cells (PSCs), yet it remains a significant challenge. In this work, we introduce a multisite polyurea adhesive (MPUA) as an additive to regulate perovskite crystallization. The MPUA additive promotes rapid nucleation while prolonging the growth period, yielding films with higher crystallinity, enlarged grains, and fewer defects, thereby alleviating lattice strain. Notably, MPUA also converts residual tensile strain into compressive strain within the film. As a result, MPUA‐modified PSCs achieve a power conversion efficiency of 24.91% with substantially enhanced stability. This work demonstrates the potential of multisite polymers for strain regulation in perovskite films toward high‐performance PSCs.
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