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Updated: Feb 22, 2026
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
Constructing Efficient and Stable Perovskite Solar Cells via Interconnecting Perovskite Grains
Xian Hou1, Sumei Huang1, Wei Ou-Yang1
1Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science and ‡Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University , Shanghai 200062, China.
Adding terephthalic acid (TPA) to perovskite precursor solutions creates interconnected grains, boosting perovskite solar cell (PSC) efficiency to 18.51% and enhancing stability against moisture and heat.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Perovskite solar cells (PSCs) offer promising photovoltaic performance.
- Improving the stability and efficiency of PSCs is crucial for commercialization.
- Controlling perovskite film morphology impacts device performance and longevity.
Purpose of the Study:
- To investigate the effect of terephthalic acid (TPA) as an additive in perovskite precursor solutions.
- To enhance the quality and stability of perovskite films for solar cell applications.
- To improve the power conversion efficiency (PCE) and operational stability of PSCs.
Main Methods:
- Incorporation of terephthalic acid (TPA) into the perovskite precursor solution.
- Analysis of perovskite film crystallization kinetics and grain morphology.
- Fabrication and characterization of PSCs with and without TPA additive.
- Assessment of device performance, hysteresis, moisture resistance, and thermal stability.
Main Results:
- TPA additive promoted lateral grain growth, forming sheet-shaped perovskite and interconnected grains.
- PSCs with TPA achieved a higher PCE of 18.51% compared to pristine cells (15.53%).
- TPA-modified PSCs showed significantly improved moisture resistance (retaining 51% PCE after 35 days) and thermal stability.
Conclusions:
- Terephthalic acid (TPA) is an effective additive for improving perovskite film quality and PSC performance.
- TPA enhances the structural integrity and stability of perovskite films, leading to better device efficiency and durability.
- The findings suggest TPA is a valuable component for developing stable and high-performance perovskite solar cells.
