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Hysteresis-Suppressed High-Efficiency Flexible Perovskite Solar Cells Using Solid-State Ionic-Liquids for Effective
Dong Yang1, Ruixia Yang2, Xiaodong Ren1
1Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|May 6, 2016
Summary
Flexible perovskite solar cells (Pvs-SCs) achieved a record 16.09% efficiency. This breakthrough is due to advanced electron-transport materials enhancing performance and stability.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Flexible perovskite solar cells (Pvs-SCs) offer potential for lightweight and versatile energy generation.
- Previous Pvs-SCs have faced limitations in efficiency and stability.
Purpose of the Study:
- To achieve a new efficiency record for flexible perovskite solar cells.
- To investigate the role of alternative electron-transport materials in enhancing Pvs-SC performance.
Main Methods:
- Fabrication of flexible perovskite solar cells utilizing novel electron-transport materials.
- Characterization of cell performance, including power conversion efficiency and stability.
- Analysis of material properties such as antireflection, work function, electron mobility, and trap-state density.
Main Results:
- Achieved a certified power conversion efficiency of 16.09% for flexible Pvs-SCs.
- Demonstrated the highest efficiency to date for this class of solar cells.
- Identified superior electron-transport materials with antireflection, optimal work function, high electron mobility, and reduced trap-state density as key factors.
Conclusions:
- The developed electron-transport materials significantly boost the performance of flexible perovskite solar cells.
- This work sets a new benchmark for flexible Pvs-SC efficiency.
- Further development of these materials could accelerate the commercialization of flexible solar technologies.
