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Updated: Jul 25, 2025
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
Molecular Bridge on Buried Interface for Efficient and Stable Perovskite Solar Cells
Haodan Guo1,2,3, Wanchun Xiang1, Yanyan Fang2,3
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.
Glycocyamine (GDA) enhances perovskite solar cell (PSC) performance by improving the buried interface. This molecular modification boosts efficiency and device stability.
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- The buried interface in perovskite solar cells (PSCs) is crucial for charge transfer and stability, yet often overlooked.
- Understanding and optimizing this interface impacts perovskite film growth and overall device performance.
Purpose of the Study:
- To investigate the effect of a molecular modifier, glycocyamine (GDA), on the SnO2/perovskite buried interface.
- To enhance interfacial contact, modulate energy levels, and improve perovskite film quality.
Main Methods:
- Utilizing glycocyamine (GDA) as a molecular modifier at the SnO2/perovskite interface.
- Analyzing the interaction between GDA and SnO2, energy level modulation, and perovskite crystal growth.
- Fabricating and characterizing PSCs with and without GDA modification.
Main Results:
- GDA forms a superior interfacial contact by interacting strongly with SnO2, modulating energy levels.
- GDA promotes perovskite crystal growth, leading to larger grains, fewer pinholes, and reduced defect density.
- GDA-modified PSCs show improved open-circuit voltage (near 1.2 V), fill factor, and power conversion efficiency (24.70% vs. 22.60%).
Conclusions:
- GDA effectively modifies the buried interface, enhancing charge transfer and perovskite film quality.
- GDA-modified PSCs exhibit significantly improved power conversion efficiency and enhanced operational and thermal stability.
