TITLE

Correlation between the crystalline environment and optical property of Mn2+ ions in ZnGa2O4: Mn2+ phosphor

AUTHOR(S)
Jong Su Kim; Jin Su Kim; Tae Wan Kim; Sun Myung Kim; Hong Lee Park
PUB. DATE
February 2005
SOURCE
Applied Physics Letters;2/28/2005, Vol. 86 Issue 9, p091912
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Sol-gel-driven ZnGa2O4:Mn2+ phosphors are annealed at various temperatures. As an increase of the annealing temperature of as-grown ZnGa2O4:Mn2+ phosphors, their lattice constants and crystallinities are increased. The resonance signal intensity of Mn2+ ions on Td sites is drastically increased whereas that of Mn2+ ions on Oh sites is decreased as the annealing temperature is increased. The decay curves are well fitted with two simple exponential decay functions indicating the existence of two origins. Liquid nitrogen-temperature emission spectra show two emission peaks suggesting that they originate from Mn2+ ions on Td and on Oh sites. The emission intensity of Mn2+ ions on Td sites is drastically increased whereas that of Mn2+ ions on Oh sites is decreased. The variation of the optical characteristics agrees with the concentration of Mn2+ ions at Td site and its site environment.
ACCESSION #
16581407

 

Related Articles

  • Variable temperature Mössbauer spectroscopic studies of oxo-centered trinuclear mixed-valence iron succinate, mesaconate and isophthalate complexes. Afroj, D.; Katada, M. // Hyperfine Interactions;2005, Vol. 166 Issue 1-4, p409 

    Three new oxo-centered trinuclear mixed-valence iron complexes, iron succinate, iron mesaconate and iron isophthalate have been prepared. Temperature dependent valence delocalization processes were observed for all the complexes on variable temperature Mössbauer spectroscopic studies. Two...

  • Photoelectric properties of a sandwich structure composed of films synthesized under highly nonequilibrium conditions. Belyaev, A. P.; Rubets, V. P.; Toshkhodzhaev, Kh. A. // Semiconductors;Aug2009, Vol. 43 Issue 8, p993 

    Results of an experimental study of the photoelectric properties of a ZnSe/CdTe/(ZnTe)1 − x (In2Te3) x sandwich structure synthesized under highly nonequilibrium conditions by vapor condensation onto a substrate cooled with liquid nitrogen are reported. Dark current-voltage...

  • Visible Photoluminescence Enhancement Of Silicon Oxide. Salih, Kifah Q. // International Journal of Scientific & Technology Research;Oct2013, Vol. 2 Issue 10, p1 

    We have been proposed a treatment method for the visible photoluminescence enhancement of SiO2 layer thermally grown on Si<100> wafer by surface texture modification. We have used liquid nitrogen (LN2) as treatment method. That method applied at different exposure time from 10min to 30sec.Room...

  • Most Dangerous Object In The Office This Month: CRY-AC-3 Liquid Nitrogen Dispenser. Davis, Allison P. // Wired;Mar2011, Vol. 19 Issue 3, p46 

    The article describes the CRY-AC-3 liquid nitrogen dispenser.

  • Cold Spray Deposition of Nanocrystalline Aluminum Alloys. Ajdelsztajn, Leonardo; Schoenung, Julie M.; Jodoin, Bertrand; Kim, George E. // Metallurgical & Materials Transactions. Part A;Mar2005, Vol. 36 Issue 3, p657 

    Aluminum 5083 powder was mechanically milled under liquid nitrogen to achieve a nanocrystalline grain size in the range of 20 to 30 nm. The powder was subsequently sprayed using a nozzle designed with a validated numerical model for cold spray technology. The resulting coatings were evaluated...

  • APPLIED HTS BULKS AND WIRES TO ROTATING MACHINES FOR MARINE PROPULSION. Miki, M.; Felder, B.; Kimura, Y.; Tsuzuki, K.; Taguchi, R.; Shiliang, Y.; Xu, Y.; Ida, T.; Izumi, M. // AIP Conference Proceedings;4/9/2010, Vol. 1218 Issue 1, p254 

    High-temperature superconductors allow a compact and efficient way to provide high-torque density to rotating machines with excellent operation. A field pole, providing flux density of more than 1.5 T around the armature, was initially designed for an axial-gap type with the flux parallel to the...

  • Liquid nitrogen cooled integrated power electronics module with high current carrying capability and lower on resistance. Hua Ye; Changwoo Lee; Simon, Randy W.; Haldar, Pradeep; Hennessy, Michael J.; Mueller, Eduard K. // Applied Physics Letters;11/6/2006, Vol. 89 Issue 19, p192107 

    This letter presents the development of high-performance integrated cryogenic power modules, where both driver components and power metal-oxide semiconductor field-effect transistors are integrated in a single package, to be used in a 50 kW prototype cryogenic inverter operating at liquid...

  • Upconversion Properties of Nanocrystalline ZrO2:Yb3+, Er3+ Phosphors. Hyppänen, Iko; Hölsä, Jorma; Kankare, Jouko; Lastusaari, Mika; Pihlgren, Laura // Journal of Nanomaterials;2007, p1 

    Combustion and sol-gel methods were used to prepare the upconverting nanocrystalline ZrO2:Yb3+,Er3+ phosphors. The crystal structure was studied by X-ray powder diffraction and the crystallite sizes were estimated with the Scherrer formula. Impurities and nanomaterials' thermal degradation were...

  • High color purity phosphors of LaAlGe2O7 doped with Tm3+ and Er3+. Li, Yu-Chun; Chang, Yen-Hwei; Lin, Yu-Feng; Lin, Yi-Jing; Chang, Yee-Shin // Applied Physics Letters;8/21/2006, Vol. 89 Issue 8, p081110 

    Phosphors of LaAlGe2O7 doped with Tm3+ and Er3+ of high color purity, exhibiting a narrow band emission in the blue and green regions, were obtained. (La1-xLnx)AlGe2O7 (Ln=Tm,Er) powders are bright emitters, with chromaticity color coordinates that are comparable to or better than those of...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics