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Updated: Jul 18, 2026
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
Understanding Microstructural Development of Perovskite Crystallization for High Performance Solar Cells.
Yabin Ma1, Xinyi Du1, Ran Chen1
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, International Joint Research Center of Shaanxi Province for Photoelectric Materials Science, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China.
This study reveals how liquid crystals influence perovskite crystallization kinetics in thin films. In situ microscopy shows this leads to diffusion-controlled growth, enhancing solar cell performance and stability.
Area of Science:
- Materials Science
- Solid-State Physics
- Photovoltaics
Background:
- Solution crystallization in thin films is crucial for devices like perovskite solar cells.
- Understanding perovskite crystallization kinetics is challenging due to limited in situ observation methods.
Purpose of the Study:
- To develop an in situ method for observing perovskite crystal nucleation and growth.
- To elucidate the crystallization kinetics and the role of liquid crystals in perovskite film formation.
Main Methods:
- In situ laser scanning confocal polarized microscopy with a temperature-controlled stage.
- Analysis of crystal growth using the Avrami equation.
- Fabrication and testing of perovskite solar cells.
Main Results:
- Liquid crystal interaction with perovskite forms an intermediate complex, inducing diffusion-controlled growth.
- Retarded cluster growth (63 nm s⁻¹) observed due to increased diffusion activation energy (40 kJ mol⁻¹).
- Optimized perovskite films achieved 24.53% solar cell efficiency and excellent long-term stability (89% after 6600 h).
Conclusions:
- In situ fluorescence microscopy is vital for understanding film device crystallization kinetics.
- Liquid crystal-mediated crystallization enhances perovskite film quality and device performance.
- The findings enable the development of more stable and efficient perovskite solar cells.
