title: Near-infrared anti-Stokes photoluminescence of PbS QDs embedded in glasses.
abstract: Near-infrared photoluminescence properties of PbS QDs embedded in glasses were investigated upon below-bandgap excitation. PbS QDs were precipitated in the glasses upon thermal treatment. Near-infrared anti-Stokes photoluminescence (ASPL) from PbS QDs was observed. Dependence of the ASPL on size and excitation power indicated that ASPL was phonon-assisted one-photon process. These near-infrared anti-Stokes photoluminescence of PbS QDs in glasses have potential applications for light conversion and laser cooling.
authors.forename: Yuda
authors.initials: Y
authors.lastname: Xiong
authors.forename: Chao
authors.initials: C
authors.lastname: Liu
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Jianjun
authors.initials: J
authors.lastname: Han
authors.forename: Xiujian
authors.initials: X
authors.lastname: Zhao