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


  • GAO is Government of Canada Research Chair in Materials Chemistry. We are deeply indebted to Primaxis Technology Ventures Incorporated for generous financial support of this work.


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).