Thermally Activated Lithium Formate Enables Buried Interface Regulation and Enhanced Crystallinity in Perovskite Solar Cells
By
Chao Gao
If you only eat one bagel today, this is the bagel.
Summary
This article presents a scientific study on improving perovskite solar cells by using a thermally activated lithium formate (LiHCOO) buried interface strategy. The method triggers in situ pseudo-halide diffusion, which simultaneously reconstructs the SnO2/perovskite interface and regulates perovskite nucleation and growth. High-temperature treatment transforms LiHCOO from a low-temperature hexagonal polymorph to a metastable monoclinic phase with a more open molecular packing, enabling better interface regulation and crystallinity enhancement in perovskite solar cells.
Key quotes
· 3 pulledRegulating buried interfaces is pivotal for suppressing interfacial defects and facilitating crystallization toward compact, high-quality perovskite films.
We propose a thermally activated lithium formate (LiHCOO) buried interface strategy that triggers in situ pseudo-halide diffusion, thereby simultaneously reconstructing the SnO2/perovskite interface and regulating perovskite nucleation and growth.
High-temperature treatment transforms LiHCOO from its low-temperature hexagonal polymorph to a metastable monoclinic phase with a more open molecular pack
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