“ZnO nanoparticles obtained by hydrothermal synthesis using microwave heating.” ~FR

“This [Zinc Oxide] semiconductor has several favorable properties, including good transparency, high electron mobility, wide bandgap, and strong room-temperature luminescence. Those properties are used in emerging applications for transparent electrodes in liquid crystal displays, in energy-saving or heat-protecting windows, and in electronics as thin-film transistors and light-emitting diodes.” (Wikipedia)