Spin‐on Nanostructured Silicon–Silica Film Displaying Room‐Temperature Nanosecond Lifetime Photoluminescence

A yellow transparent mesoporous silica film has been achieved by the incorporation of silicon nanoclusters into its channels. The resulting nanocomposite—fabricated using a combination of evaporation induced self‐ assembly and chemical vapor deposition—emits light brightly at visible wavelengths and has nanosecond radiative lifetimes at room temperature when excited by ultraviolet light (see Figure).