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Colloidal Ink Engineering for Slot-Die Processes to Realize Highly Efficient and Robust Perovskite Solar Modules
Sushil Shivaji Sangale1, Hyeonsu Son2, Sang Wook Park3
1Department of Flexible and Printable Electronics, LANL-JBNU Engineering Institute-Korea, Jeonbuk National University, Jeonju, 54896, Republic of Korea.
Advanced Materials (Deerfield Beach, Fla.)
|February 6, 2025
Summary
Engineered colloidal perovskite inks with co-antisolvents improve film quality and solar cell efficiency. This novel approach enhances perovskite solar cell (PSC) performance and stability for large-scale production.
Area of Science:
- Materials Science
- Renewable Energy
- Chemical Engineering
Background:
- Perovskite solar cells (PSCs) offer a promising alternative to silicon solar cells.
- Challenges exist in scaling up PSC fabrication due to limitations in perovskite ink and processing.
- Developing robust and efficient large-scale manufacturing methods is crucial for PSC commercialization.
Purpose of the Study:
- To introduce a novel colloidal ink strategy using co-antisolvents for efficient PSC fabrication.
- To investigate the impact of engineered colloidal inks on perovskite film quality and crystallization.
- To demonstrate the scalability and performance of PSCs fabricated with this new approach.
Main Methods:
- Fabrication of PSCs using slot-die coating with colloidal perovskite inks containing toluene and chlorobenzene as co-antisolvents.
- Characterization of ink rheological properties, film morphology, and crystal growth kinetics.
- Performance and stability testing of fabricated PSC devices and minimodules.
Main Results:
- Engineered colloidal inks significantly improved ink rheology, wettability, and film formation.
- Formation of large perovskite colloids promoted heterogeneous nucleation and enhanced crystal growth.
- The co-solvent system favored perovskite crystallization, leading to improved device efficiency (up to 21.32%) and long-term stability (77% over 10115 h).
- Scalability demonstrated with lab-scale minimodules achieving 20.26% efficiency and larger modules reaching 19.15%.
Conclusions:
- The colloidal ink strategy with co-antisolvents is effective for producing high-quality perovskite films for efficient PSCs.
- This approach addresses key challenges in large-scale PSC manufacturing by optimizing ink properties and crystallization.
- The findings offer valuable insights into the relationship between ink formulation, film characteristics, and device performance in perovskite solar technology.
