Transition metal oxide nanomaterials : synthesis and applications

Abstract

The synthesis, characterization and applications of transition metal oxide nanomaterials are explored to tackle important issues in the field of perovskite photovoltaics and oxygen scavengers. Transitional metal oxide nanomaterials have gained attention due to their versatile properties and adjustable characteristics. High-quality, reproducible metal oxide nanoparticles are fabricated, and their intrinsic structural and morphological material properties are investigated through the exploration of various synthesis tuning and characterization techniques. To address the global challenge of food waste arising from the short shelf-life of food products, oxygen scavengers using iron oxide nanoparticles combined with mesoporous oxide nanospheres. The results demonstrate the successful enhancement of nano oxygen scavengers, offering a potential solution while ensuring non-toxicity and environmental friendliness. The usage of metal oxide nanomaterials in the field of perovskite photovoltaics is explored in much greater detail. Through an elemental doping and surface modification approach on nickel oxide nanoparticles, solutions for enhancing the long-term stability of perovskite light-harvesting layers are studied. Mitigation of the photo-induced halide phase segregation is examined in great detail by improving hole extraction efficiency at the interface between the charge transport layer and the perovskite. Furthermore, a thin-film encapsulation strategy is developed using ambient-processable spray-coating layer consisting of oxide nanoparticles to protect sensitive perovskite layers from environmental factors such as oxygen and moisture, while also addressing potential toxicity concern stemming from lead leakage.