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Updated: Sep 26, 2025
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
Record-Efficiency Flexible Perovskite Solar Cells Enabled by Multifunctional Organic Ions Interface Passivation
Lu Yang1, Jiangshan Feng1, Zhike Liu1
1Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China.
A novel histamine diiodate (HADI) modifies the SnO2/perovskite interface, enhancing charge extraction and passivation for improved perovskite solar cell efficiency and stability. This breakthrough benefits flexible perovskite solar cells (f-PSCs).
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- Flexible perovskite solar cells (f-PSCs) offer advantages for portable electronics but lag behind rigid counterparts in efficiency.
- Improving the interface between the electron transport layer (ETL) and the perovskite is crucial for device performance.
Purpose of the Study:
- To design and implement a novel interfacial modifier, histamine diiodate (HADI), for perovskite solar cells.
- To enhance charge extraction, passivate defects, and improve charge transfer at the SnO2/perovskite interface.
Main Methods:
- Theoretical study guided the design of histamine diiodate (HADI).
- HADI was used to modify the SnO2 electron transport layer (ETL) in perovskite solar cells.
- Systematic experimental characterization and device performance testing were conducted.
Main Results:
- HADI effectively modifies the SnO2/perovskite interface, improving charge extraction and passivation.
- Rigid perovskite solar cells achieved a champion power conversion efficiency (PCE) of 24.79% and an open-circuit voltage (VOC) of 1.20 V.
- Flexible perovskite solar cells (f-PSCs) reached a record PCE of 22.44% with enhanced stability, retaining 91% efficiency after 1200 hours in ambient conditions.
Conclusions:
- Histamine diiodate (HADI) is a multifunctional agent that significantly boosts perovskite solar cell performance and stability.
- The developed low-temperature, solution-processed HADI-SnO2 ETL is highly promising for efficient and stable flexible perovskite solar cells (f-PSCs).
