KAUST researchers have demonstrated that incorporating tetrahydrotriazinium into perovskite/silicon tandem solar cells enhances both performance and stability. The additive increases hydrogen bonds in the perovskite film's crystal structure, improving power conversion efficiency to 33.7% and phase stability during testing under intense conditions. The improved cells showed more stability after 1500 hours of testing, modeling harsh environments. Why it matters: This research offers a pathway to more durable and efficient solar cells suitable for deployment in harsh climates like the Arabian Peninsula, potentially boosting renewable energy adoption in the region.
KAUST scientists developed a new perovskite solar cell design using thin perovskite layers at the top and bottom of the interface. The new design achieves a power conversion efficiency of 25.6%, comparable to silicon solar cells, with only a 5% efficiency loss after 1000 hours of high heat exposure. The key innovation is the use of a specific ligand that interacts effectively with the 3D perovskites for passivation, maintaining purity in the thin layers. Why it matters: This advancement enhances the stability and efficiency of perovskite solar cells, making them a more viable and cost-effective alternative to silicon, especially for countries like Saudi Arabia aiming to increase renewable energy reliance.
Researchers at KAUST, Fraunhofer ISE, and University of Freiburg developed a method using 1,3-diaminopropane dihydroiodide (PDAI) to treat the perovskite surface of perovskite silicon tandem solar cells. The treated solar cells achieved a conversion efficiency of 33.1% and an open-circuit voltage of 2.01 volts. The devices maintained performance at over 40°C for over 1500 hours along the Saudi coast. Why it matters: This innovation overcomes challenges in surface passivation of textured perovskite cells, paving the way for more efficient and stable solar energy solutions suitable for deployment in hot climates.
KAUST researchers contributed to an international collaboration demonstrating that an ionic salt molecule called CPMAC enhances perovskite solar cell performance by 0.6%. CPMAC improves the electronic properties and reduces defects in the electron transfer layer compared to C60. CPMAC solar cells also exhibited greater stability, with a one-third reduction in power conversion efficiency drop compared to C60 cells under heat and humidity. Why it matters: This advancement addresses a key limitation in perovskite solar cell stability, potentially leading to more efficient and durable renewable energy solutions.
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.