Open AccessUnusual luminescence quenching and reviving behavior of Bi-doped germanate glasses
Author(s) -
Beibei Xu,
Shifeng Zhou,
Ming Guan,
Dezhi Tan,
Yan Teng,
Jiajia Zhang,
Zhijun Ma,
Hong Zhang,
Jianrong Qiu
Publication year - 2011
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.19.023436
Subject(s) - luminescence , photoluminescence , materials science , germanate , differential thermal analysis , doping , annealing (glass) , analytical chemistry (journal) , diffraction , transmission electron microscopy , optics , quenching (fluorescence) , optoelectronics , fluorescence , nanotechnology , chemistry , composite material , physics , chromatography
Here for the first time, we report an unusual annealing temperature dependent near-infrared (NIR) luminescence quenching and reviving behavior in Bi-doped MgO-Al₂O₃-GeO₂ glasses. Systematic characterizations of the samples by using differential thermal analysis (DTA), photoluminescence and absorption spectra, X-ray diffraction (XRD) and transmission electron microscopy (TEM) indicate that this phenomenon is associated with the reversible reaction of Bi⁺ and Bi⁰ initiated by the change of local glass structure. Excitingly, wavelength tunable luminescence is also observed and it can be ascribed to selective excitation of active Bi⁺ center in different sites. These results not only open a new way for controlling luminescence properties of main group elements in glass but also provide great value for improving practical active-fiber drawing process.