摘要
Obtaining micron-thick perovskite films of high quality is key to realizing efficient and stable positive (p)-intrinsic (i)-negative (n) perovskite solar cells1,2, but it remains a challenge. Here we report an effective method for producing high-quality, micron-thick formamidinium-based perovskite films by forming coherent grain boundaries, in which high-Miller-index-oriented grains grow on the low-Miller-index-oriented grains in a stabilized atmosphere. The resulting micron-thick perovskite films, with enhanced grain boundaries and grains, showed stable material properties and outstanding optoelectronic performances. The small-area solar cells achieved efficiencies of 26.1%. The 1-cm2 devices and 5 cm × 5 cm mini-modules delivered efficiencies of 24.3% and 21.4%, respectively. The devices processed in a stabilized atmosphere presented a high reproducibility across all four seasons. The encapsulated devices exhibited superior long-term stability under both light and thermal stressors in ambient air.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 874-881 |
| 页数 | 8 |
| 期刊 | Nature |
| 卷 | 635 |
| 期 | 8040 |
| DOI | |
| 出版状态 | 已出版 - 28 11月 2024 |
学术指纹
探究 'Coherent growth of high-Miller-index facets enhances perovskite solar cells' 的科研主题。它们共同构成独一无二的学术指纹。引用此
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