2025-04-18 中国科学院（CAS）
＜関連情報＞
- https://english.cas.cn/newsroom/research_news/chem/202504/t20250416_1041309.shtml
- https://english.cas.cn/newsroom/cas_media/202504/t20250418_1041565.shtml
- https://www.nature.com/articles/s41560-025-01760-6
- https://www.nature.com/articles/s41560-025-01766-0
フレキシブルモノリシックペロブスカイト/Cu(In,Ga)Se2タンデム太陽電池のための自己組織化単分子膜のアンチソルベントシーディング Antisolvent seeding of self-assembled monolayers for flexible monolithic perovskite/Cu(In,Ga)Se2 tandem solar cells
Zhiqin Ying,Shiqian Su,Xin Li,Guoxin Chen,Chongyan Lian,Dikai Lu,Meili Zhang,Xuchao Guo,Hao Tian,Yihan Sun,Linhui Liu,Chuanxiao Xiao,Yuheng Zeng,Chao Zhang,Xi Yang & Jichun Ye
Nature Energy Published:18 April 2025
DOI:https://doi.org/10.1038/s41560-025-01760-6
Abstract
Flexible perovskite/copper indium gallium selenide (CIGS) tandem solar cells hold great promise for lightweight, high-efficiency applications, yet achieving high-quality perovskite top cells on the rough surfaces of flexible CIGS bottom cells remains challenging. Accordingly, we developed an antisolvent-seeding strategy that decouples self-assembly monolayers (SAMs) adsorption from dissolution, while integrating perovskite seeding. A high-polarity solvent prevents SAMs clustering during dissolution, while a low-polarity antisolvent promotes high-density SAMs formation during adsorption. Additionally, a pre-mixed seed layer further improves perovskite wettability, crystallinity and adhesion. These advancements enable the fabrication of a 1.09-cm2 flexible monolithic perovskite/CIGS tandem with a stabilized efficiency of 24.6% (certified 23.8%), comparable to the best-performing rigid perovskite/CIGS tandems and representing one of the highest efficiencies among flexible thin-film solar cells. The flexible devices also demonstrate excellent durability, retaining over 90% of initial performance after 320 h of operation and 3,000 bending cycles at a 1-cm radius.
安定したフレキシブル・タンデム太陽電池を製造するための抗溶媒シーディング・アプローチ An antisolvent-seeding approach to produce stable flexible tandem solar cells
Nature Energy Published:18 April 2025
DOI:https://doi.org/10.1038/s41560-025-01766-0
An antisolvent-seeding strategy enhanced self-assembled monolayer formation, enabling the growth of high-quality perovskite top cells on flexible Cu(In,Ga)(S,Se)2 bottom cells. A 1 cm2 flexible tandem solar cell produced using this approach achieved a certified efficiency of 23.8% and is photostable and mechanically durable.
