KAUST researcher Erkan Aydin is focusing his research on space-grade photovoltaics, driven by the increasing demand for low-cost solar cells due to the boom in space travel. Aydin notes that existing high-performance photovoltaics are too expensive and cannot meet the projected demand from mega-satellite constellations. He believes perovskite-tandem solar cells offer a cheaper and more scalable alternative, with the main challenge being stabilizing the cells against space extremes. Why it matters: This research aims to address a critical need in the rapidly expanding space industry, potentially positioning KAUST as a leader in developing cost-effective and scalable solar solutions for space applications.
Researchers from KAUST and University of Toronto have created a two-sided perovskite/silicon tandem solar cell that exceeds the performance limits for tandem configurations. The bifacial design captures both direct sunlight and light reflected from the ground (albedo). Outdoor testing demonstrated efficiencies beyond commercial silicon solar panels. Why it matters: This innovation promises ultra-high power generation at affordable costs, potentially revolutionizing the photovoltaics market in the region and globally.
A KAUST research team led by Prof. Osman Bakr developed a novel antisolvent vapor-assisted crystallization (AVC) method to grow high-quality, crack-free MAPbX3 perovskite single crystals at room temperature. The resulting crystals exceeded 100 mm3 in volume and exhibited exceptionally low trap-state density (approximately 10^9 – 10^10 cm-3). The crystal quality is comparable to high-quality single crystal silicon, but grown at much lower temperatures. Why it matters: This breakthrough allows for more accurate characterization of perovskite photovoltaic properties and can accelerate improvements in solar cell efficiency.
KAUST researchers found that inserting a magnesium fluoride layer in perovskite–silicon tandem solar cells can stall charge recombination and enhance performance. The magnesium fluoride interlayer effectively promoted electron extraction from the perovskite active layer and reduced charge recombination at the interface. The resulting tandem solar cell achieved a stabilized power conversion efficiency of 29.1%. Why it matters: Improving the efficiency of solar cells is critical for expanding renewable energy capacity in Saudi Arabia and worldwide.
KAUST held a research conference on Synergistic Approaches in Solar Energy Conversion from February 25-27, bringing together KAUST researchers and international colleagues. The conference, organized by the KAUST Solar Center (KSC), focused on performance-limiting factors, emerging synergistic approaches, and methods to overcome current performance limits in solar energy. Yves Gnanou and Professor Iain McCulloch highlighted KAUST's commitment to solar energy research and the KSC's role in collaborative, applied solutions. Why it matters: The conference underscores KAUST's dedication to advancing solar energy technologies and fostering international collaboration to address regional and global energy challenges.
KAUST researchers have achieved a breakthrough by passing the damp-heat test for perovskite solar cells (PSCs), a rigorous assessment of their ability to withstand prolonged exposure to high humidity and temperatures. The team engineered 2D-perovskite passivation layers that block moisture and enhance power conversion efficiencies. The successful test, which requires maintaining 95% of initial performance after 1,000 hours at 85% humidity and 85 degrees Celsius, marks a significant step toward commercialization. Why it matters: This advancement addresses a critical weakness of PSCs and brings the technology closer to competing with silicon solar cells in terms of stability and longevity, crucial for widespread adoption of renewable energy.
KAUST researchers have fabricated and tested high-efficiency perovskite-silicon tandem solar cells optimized for hot climates. The tandem device is more stable than conventional perovskite cells and optimized for industry use. Outdoor testing at KAUST confirmed performance improvements, indicating bromide-lean perovskite top cells with narrower bandgaps are ideal. Why it matters: The research demonstrates the viability of tandem silicon-perovskite cells in harsh environments, paving the way for more efficient solar technology in the region and globally.
KAUST researchers developed a tandem solar cell with 32.5% conversion efficiency by optimizing the silicon-perovskite connection. Another team combined spectroscopy and reactor technologies to reveal details on catalyst function and reaction mechanisms. A KAUST team also developed a mathematical framework improving data rates by 30% and optimizing terrestrial network speeds. Why it matters: These advances highlight KAUST's contributions to sustainable energy, industrial processes, and network optimization, addressing key challenges in the region and globally.