Abstract
Frequency upconversion (UC) photoluminescence (PL) in PbO-B2O3 glass codoped with trivalent ions of neodymium (Nd3+) and ytterbium (Yb3+) is prepared by melt quench method. X-ray diffraction (XRD) and differential scanning carorimetry (DSC) done for structural and thermal studies. Physical properties as density, oxygen packing density, lanthanide ion concentration etc. calculated. Photoluminescence of the sample gives the information of spectral lines, corresponding to the Nd3+ transitions 4G9/2 4I9/2 (at 500 nm), 4G7/24I9/2 (at 550 nm), [4G5/2; 2G7/2] 4I11/2 (at 595 nm) and 4G7/24I13/2 (at 660 nm). The dependence of the UC intensity with the Yb3+ concentration and the time behavior of the UC signal indicated the presence of two energy transfer (ET) pathways involving Nd3+-Yb3+ pairs and Yb3+-Nd3+-Yb3+ triads. Rate-equations for the population densities of the lanthanide energy levels were used to describe the dynamics of the UC emission and to determine the ET rates.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
