Academic Journal
Aqueous synthesis of perovskite precursors for highly efficient perovskite solar cells
| العنوان: | Aqueous synthesis of perovskite precursors for highly efficient perovskite solar cells |
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| المؤلفون: | Zhu, Peide, Wang, Deng, Zhang, Yong, Liang, Zheng, Li, Jingbai, Zeng, Jie, Zhang, Jiyao, Xu, Yintai, Wu, Siying, Liu, Zhixin, Zhou, Xianyong, Hu, Bihua, He, Feng, Zhang, Lin, Pan, Xu, Wang, Xingzhu, Park, Nam-Gyu, Xu, Baomin |
| المصدر: | Science ; volume 383, issue 6682, page 524-531 ; ISSN 0036-8075 1095-9203 |
| بيانات النشر: | American Association for the Advancement of Science (AAAS) |
| سنة النشر: | 2024 |
| الوصف: | High-purity precursor materials are vital for high-efficiency perovskite solar cells (PSCs) to reduce defect density caused by impurities in perovskite. In this study, we present aqueous synthesized perovskite microcrystals as precursor materials for PSCs. Our approach enables kilogram-scale mass production and synthesizes formamidinium lead iodide (FAPbI 3 ) microcrystals with up to 99.996% purity, with an average value of 99.994 ± 0.0015%, from inexpensive, low-purity raw materials. The reduction in calcium ions, which made up the largest impurity in the aqueous solution, led to the greatest reduction in carrier trap states, and its deliberate introduction was shown to decrease device performance. With these purified precursors, we achieved a power conversion efficiency (PCE) of 25.6% (25.3% certified) in inverted PSCs and retained 94% of the initial PCE after 1000 hours of continuous simulated solar illumination at 50°C. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1126/science.adj7081 |
| الاتاحة: | https://doi.org/10.1126/science.adj7081 https://www.science.org/doi/pdf/10.1126/science.adj7081 |
| رقم الانضمام: | edsbas.B8A9BB8D |
| قاعدة البيانات: | BASE |
| DOI: | 10.1126/science.adj7081 |
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