Abstract
This seminar explores the synthesis, characterization, and applications of transition metal oxide nanomaterials, addressing key challenges in perovskite photovoltaics and oxygen scavengers. Transition metal oxide nanomaterials are highlighted for their versatile and adjustable properties. High-quality, reproducible metal oxide nanoparticles are synthesized, with investigations into their structural and morphological properties through various synthesis and characterization techniques. To tackle the global food waste issue, the development of oxygen scavengers using iron oxide nanoparticles combined with mesoporous oxide nanospheres is examined, demonstrating enhanced performance while ensuring non-toxicity and environmental safety. The application of metal oxide nanomaterials in perovskite photovoltaics is also detailed. Elemental doping and surface modification on nickel oxide nanoparticles are used to enhance the long-term stability of perovskite light-harvesting layers. Mitigation of photo-induced halide phase segregation is achieved by improving hole extraction efficiency at the charge transport layer interface. Additionally, a thin-film encapsulation strategy using ambient-processable spray-coating of oxide nanoparticles is presented to protect sensitive perovskite layers from environmental factors and address lead leakage concerns.
Anyone interested is welcome to attend.