Open AccessNear-infrared anti-Stokes photoluminescence of PbS QDs embedded in glasses
Author(s) -
Yuda Xiong,
Chao Liu,
Jing Wang,
Jianjun Han,
Xiujian Zhao
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.006874
Subject(s) - photoluminescence , materials science , infrared , optoelectronics , optics , excitation , near infrared spectroscopy , physics , quantum mechanics
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.