Camphor Additives Boost Perovskite Solar Cell Efficiency

• Boost solar efficiency and sustainability with camphor-derived perovskite films, achieving 25.2% PCE and doubling lifespan, revolutionizing eco-friendly solar technology.

A research team at Ulsan National Institute of Science and Technology, led by Professor Yang Chang-deok, has developed high-quality perovskite thin films using camphor-derived additives, enhancing the efficiency and stability of perovskite solar cells. The camphorquinone additive, which sublimates gradually, ensures uniform crystallization without leaving residues, improving the lifespan and reducing manufacturing costs. The solar cells achieved a photoelectric conversion efficiency (PCE) of 25.2%, a 9.6% increase over non-additive cells.

Under maximum power point tracking conditions, the cells maintained over 90% of initial efficiency for 1,000 hours, doubling the lifespan compared to the control group. Professor Yang highlighted the significance of using eco-friendly materials to address stability issues, promoting sustainability and technological advancement in the solar energy industry.

How do camphor-derived additives improve perovskite solar cell efficiency and stability?

• Camphor-derived additives, such as camphorquinone, facilitate uniform crystallization of perovskite films, which is crucial for enhancing the structural integrity and performance of solar cells.
• The gradual sublimation of camphorquinone prevents the formation of defects and voids in the perovskite layer, leading to improved film quality and efficiency.
• By ensuring a residue-free crystallization process, camphor-derived additives help in maintaining the optical and electronic properties of the perovskite material.
• The use of these additives contributes to a significant increase in photoelectric conversion efficiency (PCE), reaching 25.2%, which is a notable improvement over traditional methods.
• The enhanced stability of the solar cells, with over 90% of initial efficiency retained for 1,000 hours under maximum power point tracking, indicates a substantial extension of the operational lifespan.
• The eco-friendly nature of camphor-derived additives aligns with the growing demand for sustainable and environmentally responsible materials in the renewable energy sector.
• The reduction in manufacturing costs due to the efficient and residue-free crystallization process makes perovskite solar cells more economically viable for large-scale production.
• The research underscores the potential of natural and bio-derived compounds in advancing solar technology, offering a pathway to more sustainable and efficient energy solutions.