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In-Situ Polymer Framework Strategy Enabling Printable and Efficient Perovskite Solar Cells by Mitigating "Coffee
Linfeng Li1, Zengqi Huang1, Xiangchuan Meng2
1Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.
Advanced Materials (Deerfield Beach, Fla.)
|January 6, 2024
Summary
Researchers developed an in situ polymer framework to overcome the coffee-ring effect in perovskite solar cell manufacturing. This innovation enables high-quality, reproducible large-area deposition, paving the way for commercialization.
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- Organic-inorganic hybrid perovskites offer excellent photovoltaic properties for next-generation solar cells.
- Solution-printed manufacturing promises low-cost, high-throughput production of thin-film electronics.
- The coffee-ring effect (CRE) hinders high-quality, reproducible large-area perovskite deposition, impeding commercialization.
Purpose of the Study:
- To address the challenges of perovskite film deposition caused by the coffee-ring effect.
- To develop a method for achieving high-quality and reproducible large-area perovskite films for photovoltaics.
- To enhance the commercial viability of printed perovskite solar cells.
Main Methods:
- Introduction of an in situ polymer framework formed by spontaneous cross-linking.
- Modification of precursor viscosity and heat diffusion coefficient using the polymer framework.
- Control of Marangoni convection to mitigate the coffee-ring effect during deposition.
Main Results:
- Achieved high-quality perovskite films with significantly enhanced reproducibility in printing efficient photovoltaics.
- Perovskite solar cells reached a power conversion efficiency of 23.94%, and modules achieved 17.53%.
- Demonstrated excellent environmental stability, retaining over 90% and 78% efficiency after 2500 and 1600 hours of storage, respectively.
Conclusions:
- The in situ polymer framework effectively counteracts the coffee-ring effect, enabling homogeneous perovskite film deposition.
- This approach facilitates the printing manufacturing and commercialization of efficient and stable perovskite photovoltaics.
- The study provides a foundation for exploring precursor rheology to optimize perovskite deposition for large-area applications.
