Vacuum-driven precrystallization enables efficient all-perovskite tandem solar cells

IF 38.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL Joule Pub Date : 2025-02-04 DOI:10.1016/j.joule.2025.101825

Mingyu Li, Jun Yan, Afei Zhang, Xinzhao Zhao, Xuke Yang, Shuwen Yan, Ning Ma, Tianjun Ma, Dingfu Luo, Zhenhua Chen, Luying Li, Xiong Li, Chao Chen, Haisheng Song, Jiang Tang

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Abstract

The power conversion efficiency of all-perovskite tandem solar cells (TSCs) suffers from inferior film quality and the susceptible fabrication processes of lead-tin narrow band-gap (Pb-Sn NBG) perovskite subcells. Herein, we developed a robust vacuum-driven precrystallization (VDP) strategy for high-quality Pb-Sn NBG perovskite films. Compared with traditional anti-solvent methods, the present precrystallization step could significantly retard the perovskite crystallization process by mild vacuum pumping. The above evolution process was quantitatively studied for the perovskite intermediate phase (PIP). The slow solvent extraction of the VDP strategy promotes a low surface energy of (100) plane-oriented precrystallization and provides sufficient time for grain ripening. The obtained Pb-Sn perovskite presented overall texture homogeneity and high crystallinity. The resulting all-perovskite TSCs yielded a top certified efficiency of 28.87% (28.09%) under reverse (forward) scan. Our VDP strategy promises efficient perovskite TSCs and contributes a key step toward robust and scalable photovoltaic technology.

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来源期刊

Joule Energy-General Energy

CiteScore

53.10

自引率

2.00%

发文量

198

期刊介绍： Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.