As the world increasingly prioritizes sustainable energy solutions, solar power stands out as a leading candidate for clean energy generation. However, traditional solar cells have encountered several challenges, particularly regarding efficiency and stability. But what if there was a better alternative? Imagine a solar cell that is affordable, more stable and highly efficient. Does it sound like science fiction? Not anymore. Meet SrZrSe3 chalcogenide perovskite, a rising star in the world of photovoltaics.
Our research team at the Autonomous University of Querétaro in Mexico has recently unveiled a solar cell crafted from a unique material called SrZrSe3. This novel approach is turning heads in the pursuit of affordable and efficient solar energy.
For the first time, we have successfully integrated advanced inorganic metal sulfide layers, known as hole transport layers (HTLs), with SrZrSe3 using SCAPS-1D simulations. Our work, published in Energy Technology, has significantly raised the power conversion efficiency (PCE) to an impressive rate of more than 27%, marking an advancement in solar technology.
So what makes this breakthrough so noteworthy? The key lies in the exceptional properties of SrZrSe3. With an ideal bandgap of 1.45 eV, this material is particularly superior at absorbing sunlight, especially within the near-infrared spectrum. This capability translates into the ability to capture and convert a larger amount of solar energy into electricity, which can then be utilized to power homes, businesses, and more.
To achieve these promising results, we did not merely rely on the inherent qualities of SrZrSe3. We also meticulously optimized the design of the solar cells by testing various HTLs, including FeS2, WS2, TiS2, HfS2, TaS2, and NiS2 to enhance charge transport while minimizing energy losses. By fine-tuning parameters such as layer thickness and defect density, we succeeded in boosting efficiency to a peak PCE of 27.8%. This level of performance potentially revolutionizes solar energy capture.
Another critical aspect of this emerging technology is its stability. Traditional organic HTLs often suffer from high costs and considerable instability. In contrast, the metal sulfide layers utilized in our work promise enhanced charge mobility and long-term reliability. We focused on refining the interfaces between various materials and ensuring efficient charge extraction, which significantly prolongs the lifespan of these solar cells.
This research paves the way for the future of solar energy, showcasing scalable, eco-friendly, and ultra-efficient solar cells capable of transforming how we harness the sun’s power. With ongoing advancements in material science and technology, SrZrSe3 solar cells may soon emerge as a formidable alternative to traditional energy sources, leading us toward a brighter and more sustainable energy future.
The potential of our research ignites hope, demonstrating that clean energy alternatives are not just possible but within our reach.
This story is part of Science X Dialog, where researchers can report findings from their published research articles. Visit this page for information about Science X Dialog and how to participate.
More information:
Eupsy Navis Vincent Mercy et al, Unlocking the Potential of Emerging SrZrSe3 Solar Cells with Diverse Inorganic Metal Sulfide Hole Transport Layers, Energy Technology (2024). DOI: 10.1002/ente.202401459
Dr. Latha Marasamy is a Research Professor at the Faculty of Chemistry at UAQ, where she heads an innovative group of international students and researchers. Her varied research focuses on carbon and graphene, chalcogenide semiconductors, metal oxides, MOFs, as well as plasmonic metal nitrides and phosphides, all directed toward applications in energy and the environment. Moreover, her team offers theoretical insights into solar cells using SCAPS-1D simulations.
Citation:
SrZrSe₃ chalcogenide perovskites with advanced metal sulfide hole transport layers achieve 27.8% efficiency (2025, March 18)
