KAUST startup Quantum Solutions manufactures quantum dots, semiconducting nanoparticles that emit light with controllable energy. These dots are being explored for applications including displays, photodetectors, and solar cells. Quantum dots can enhance the efficiency of silicon solar panels by absorbing infrared light. Why it matters: This highlights the potential of KAUST-incubated startups to contribute to advanced materials science and renewable energy technologies in the region.
KAUST researchers studied quantum dot (QD) solar cells, finding that QD size significantly impacts electron injection efficiency. Using femtosecond broadband transient absorption spectroscopy, they examined charge transfer between QDs and phenyl-C61-butyric acid methyl ester (PCBM). They demonstrated that smaller QDs with a bandgap larger than 1 eV facilitate electron transfer to PCBM upon light absorption. Why it matters: This work provides insights into optimizing QD solar cell design by tuning electron injection through QD size, potentially leading to more efficient and low-cost photovoltaic technologies.
Ghada Ahmed, a fourth-year Ph.D. student at KAUST's Solar Center, researches semiconductor nanocrystals under the supervision of Assistant Professor Omar Mohammed. Her work focuses on the colloidal synthesis of quantum dots and nanocrystals with controlled sizes and shapes. She aims to understand photogenerated charge carrier dynamics and reaction mechanisms to optimize energy-efficient devices. Why it matters: This research contributes to advancements in materials science and renewable energy technologies within the Kingdom.