Nanomaterials are foundations of nanoscience and nanotechnology. Nanostructure science and technology is a broad and interdisciplinary area of research. The development activity in nanoscience has been emerging explosively worldwide in the recent decade. It has the potential for transforming the means in which materials and products are produced and the range and nature of functionalities that can be accessed. It is already having a significant commercial impact, which will assuredly increase in the future. Nanophosphors have been extensively investigated during the past years due to their application potential for various high-performance and novel displays and lighting devices.