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High-Performance Ternary Perovskite-Organic Solar Cells
Tao Zhu1, Lening Shen1, Sangni Xun2
1School of Polymer Science and Polymer Engineering, College of Engineering and Polymer Science, The University of Akron, Akron, OH, 44325, USA.
This study introduces ternary perovskite-organic composites for enhanced solar cell performance. These materials improve stability and efficiency, offering a promising path for high-performance perovskite solar cells.
Area of Science:
- Materials Science
- Renewable Energy
Background:
- 2D perovskites in 3D networks improve stability but reduce PCEs.
- Need for higher efficiency and stability in perovskite solar cells.
Purpose of the Study:
- Enhance PCEs, stability, and reduce hysteresis in perovskite solar cells.
- Investigate ternary perovskite-organic composites.
Main Methods:
- Incorporation of n-type, low-optical-gap conjugated organic molecules into 2D:3D perovskite composites.
- Fabrication of ternary perovskite-organic solar cells with a p-i-n device structure.
Main Results:
- Ternary composites show extended near-infrared absorption, improved film morphology, and crystallinity.
- Achieved PCEs over 23% with balanced charge transport and suppressed counter-ion movement.
- Demonstrated dramatically enhanced stability and diminished photocurrent hysteresis.
Conclusions:
- Ternary perovskite-organic composites offer a facile strategy for high-performance solar cells.
- This approach significantly improves stability and efficiency while reducing hysteresis.
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