The application of photoluminescent materials in the field of information security has attracted much attention. A number of anti-counterfeiting technologies have been developed, including watermarks, 2D codes and luminescent printing. However, common fluorescent materials are monochromatic and easily counterfeited.
Click here for original story, Scientists develop novel multi-color room temperature phosphorescent silicon-nanodot-based nanocomposites
Source: Phys.org