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Updated: Sep 4, 2025
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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
18.6K
Hot-Casting-Assisted Liquid Additive Engineering for Efficient and Stable Perovskite Solar Cells.
Hanul Min1,2, Junnan Hu1, Zhaojian Xu1
1Department of Electrical and Computer Engineering, Princeton University, Princeton, NJ, 08544, USA.
Advanced Materials (Deerfield Beach, Fla.)
|July 16, 2022
Summary
Hot casting reduces residual dimethyl sulfoxide (DMSO) in perovskite solar cells, improving interfaces and stability. This method enhances perovskite solar cell performance and longevity.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) utilize additives like dimethyl sulfoxide (DMSO) for improved film quality.
- Residual DMSO in PSCs can lead to voids, byproducts, and performance degradation.
Purpose of the Study:
- To investigate the 'hot-casting' method for reducing residual DMSO in perovskite films.
- To enhance the perovskite-substrate interface and improve PSC stability and efficiency.
Main Methods:
- Fabrication of PSCs using a hot-casting technique with preheated substrates.
- Optimization of perovskite precursor concentration and DMSO levels.
- Device testing under simulated solar illumination and long-term operational stability tests.
Main Results:
- Hot-casting significantly reduced residual DMSO in perovskite films.
- Improved perovskite-substrate interfaces with suppressed byproduct formation.
- Achieved a peak power conversion efficiency (PCE) of 23.4% (23.0% stabilized).
- Encapsulated devices retained 75% and 90% of initial/post-burn-in efficiencies after 3000 hours of operation.
Conclusions:
- The hot-casting method effectively minimizes detrimental DMSO residues in PSCs.
- This approach leads to higher efficiency and significantly improved operational stability.
- Hot-casting offers a promising strategy for scalable, high-performance perovskite solar cell fabrication.
