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A Nontoxic NFM Solvent for High-Efficiency Perovskite Solar Cells with a Widened Processing Window
Yating Fang1, Yue Jiang1, Zhengchi Yang1
1Institute for Advanced Materials & Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
ACS Applied Materials & Interfaces
|October 12, 2022
Summary
Replacing toxic N,N-dimethylformamide (DMF) with nontoxic N-formylmorpholine (NFM) in perovskite solar cells (PSCs) boosts efficiency and environmental safety. This solvent engineering enhances PSC fabrication and performance.
Area of Science:
- Materials Science
- Renewable Energy
- Green Chemistry
Background:
- Industrialization of perovskite solar cells (PSCs) faces challenges due to toxic solvent usage, particularly N,N-dimethylformamide (DMF).
- DMF poses significant environmental and health risks, necessitating safer alternatives for sustainable PSC production.
Purpose of the Study:
- To investigate N-formylmorpholine (NFM) as a nontoxic alternative solvent to DMF for PSC fabrication.
- To evaluate the impact of NFM on PSC efficiency, reproducibility, and processing parameters.
Main Methods:
- Solvent engineering by replacing DMF with NFM in the perovskite precursor solution.
- Fabrication and characterization of PSCs using both DMF and NFM.
Main Results:
- PSCs fabricated with NFM achieved a higher power conversion efficiency (PCE) of 22.78% compared to 21.97% with DMF.
- NFM enabled a wider antisolvent processing window, leading to improved fabrication reproducibility.
- The use of NFM resulted in eco-friendly and stable perovskite solar cells.
Conclusions:
- N-formylmorpholine (NFM) is a viable, nontoxic alternative to DMF for high-performance PSCs.
- Solvent engineering with NFM offers a promising strategy for developing sustainable and efficient perovskite solar cells.
- This approach addresses environmental concerns associated with PSC manufacturing.
