Photoluminescence of PbS quantum dots embedded in glasses

Abstract: Optical properties and photoluminescence of PbS quantum dots (QDs) embedded in glasses were investigated. Formation and radius of PbS QDs were carefully controlled though heat-treatment and modification of host glass composition. Heat-treatment conditions for precipitation of 3–10nm radius QDs for the tunable photoluminescence in the 1–2μm wavelength range were identified. Glasses doped with PbS QDs provide potential as robust materials for broadband fiber-optic amplifiers. [Copyright &y& Elsevier]