Luminescent characteristics of ZrO2:Pb nanopowders

Fabrication of novel SnO2 nanofibers bundle and their optical properties

“…The estimated bandgap energy for the SnO 2 nanofibers is 3.68 eV, which is in good agreement with the reported value [47].…”

“…The band at 369 nm is the strongest emission which lies in UV region whereas two weak emissions at 450 and 466.6 nm are in visible region (violet/blue). The emission band in UV region at 369 nm originates from the near band edge (NBE) emission of SnO 2 [46,47]. In NBE emission, the donor level lies just a little below conduction band within the energy gap.…”

Effect of pH on photoluminescence enhancement in Pb-doped ZnS nanoparticles

“…They are known to fluoresce at a single or multiple wavelengths depending on the activators. In contrast, there is little work thus far on Pb doping in ZnS [17][18][19] or other hosts [20][21][22][23]. Bulk Pb +2 , a 6s 2 activator, is known to yield blue, green, and red emissions [24].…”

Cellulose fibers modified by Eu3+-doped yttria-stabilized zirconia nanoparticles

“…Luminescent cellulose fibers can be used to verify the authenticity of textiles, as well as documents and papers of value (Gu et al 2004). As reported elsewhere, the security fibers with various shapes of cross-section from synthetic polymers containing luminescent pigments, copolymers or dyes, has been investigated (Fu et al 2006).…”

“…Also, europium ions, complexes containing ions of this rare earth metal, and polymers doped with it, have been investigated and reported in the literature (Yakimanskii et al 2008;Ribeiro et al 1998;Mardaleishvili et al 2009;Rybaltovskii et al 2009). The zirconia, which was used in the investigation presented in this paper, is also a very interesting compound due to its characteristics, especially at nanoscale size (Gu et al 2004).…”