College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China.
Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
Angew Chem Int Ed Engl. 2023 May 22;62(22):e202302462. doi: 10.1002/anie.202302462. Epub 2023 Apr 20.
Carbonyl functional materials as additives are extensively applied to reduce the defects density of the perovskite film. However, there is still a lack of comprehensive understanding for the effect of carbonyl additives to improve device performance. In this work, we systematically study the effect of carbonyl additive molecules on the passivation of defects in perovskite films. After a comprehensive investigation, the results confirm the importance of molecular dipole in amplifying the passivation effect of additive molecules. The additive with strong molecular dipole possesses the advantages of enhancing the efficiency and stability of perovskite solar cells (PSCs). After optimization, the companion efficiency of PSCs is 23.20 %, and it can maintain long-term stability under harsh conditions. Additionally, a large-area solar cell module-modified DLBA was 20.18 % (14 cm ). This work provides an important reference for the selection and designing of efficient carbonyl additives.
羰基功能材料作为添加剂被广泛应用于降低钙钛矿薄膜的缺陷密度。然而，对于羰基添加剂改善器件性能的作用仍缺乏全面的认识。在这项工作中，我们系统地研究了羰基添加剂分子对钙钛矿薄膜中缺陷钝化的影响。经过全面的研究，结果证实了分子偶极对放大添加剂分子钝化效果的重要性。具有强分子偶极的添加剂具有提高钙钛矿太阳能电池（PSC）效率和稳定性的优势。经过优化，PSC 的配套效率为 23.20%，在恶劣条件下能够长期稳定。此外，大面积太阳能电池模块修饰的 DLBA 为 20.18%（14 cm ）。这项工作为高效羰基添加剂的选择和设计提供了重要参考。
