Spectral-luminescent Properties of Silver Clusters Formed in Ion-exchanged Antimony-doped Photo-thermo-refractive Glasses

摘要

Photo-thermo-refractive glasses are now attractive material for developing various elements and devices of photonics. Influence of antimony oxide content in the photo-thermo-refractive glass composition and subsequent heat treatment temperature on the spectral-luminescent properties of silver non-metal clusters and metal nanoparticles formed with low-temperature ion exchange method were studied. Silver clusters in ion-exchanged Sb-doped photo-thermo-refractive glasses reveal broadband and intense emission in the visible and near infrared ranges. Absolute quantum yield of luminescence reaches 63% (λ_(ex)=365 nm), which opens up new prospects for using such materials as phosphors for white LEDs and down-convertors for solar cells.