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Updated: Apr 30, 2026
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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
18.4K
Thermally Stable Anthracene-Based 2D/3D Heterostructures for Perovskite Solar Cells
Kathryn Bairley1, Junxiang Zhang2, Damara G Dayton3
1School of Materials Science and Engineering, Georgia Institute of Technology, North Ave NW, Atlanta, Georgia 30332, United States.
ACS Applied Materials & Interfaces
|December 27, 2024
Summary
Anthracene-based organic cations enhance perovskite solar cell stability. Anthracen-1-ylmethylammonium iodide (AMAI) improves thermal stability and power conversion efficiency, unlike other bulky cations.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Bulky organic cations protect perovskite solar cells from degradation but can cause thermal instabilities.
- These instabilities arise from reactions forming low-dimensional perovskites and cation diffusion.
Purpose of the Study:
- To investigate the thermal stability of 3D perovskite surfaces treated with anthracene salts (AMAI and AEAI).
- To compare the performance and stability of AMAI and AEAI with phenethylammonium iodide (PEAI).
Main Methods:
- Treatment of Cs0.09FA0.91PbI3 perovskite surfaces with AMAI, AEAI, and PEAI.
- Thermal annealing of treated perovskite films.
- Measurement of power conversion efficiencies (PCEs) and high-temperature stability tests (85 °C).
Main Results:
- AMAI's steric hindrance reduces interaction with the perovskite lattice, requiring higher thermal energy for 2D phase conversion.
- AMAI treatment enhanced PCE after annealing, while PEAI and AEAI showed decreased efficiencies.
- AMAI-treated devices exhibited superior thermal stability and a 100% yield of working pixels after high-temperature testing.
Conclusions:
- AMAI demonstrates significant potential as a scalable surface treatment for improving perovskite solar cell stability and performance.
- The unique steric properties of AMAI offer a pathway to overcome thermal degradation issues in perovskite photovoltaics.
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