Bright blue phosphors in ZnO–WO[sub 3] binary system discovered through combinatorial methodology

Hayashi, Hideki; Ishizaka, Akitoshi; Haemori, Masamitsu; Koinuma, Hideomi
March 2003
Applied Physics Letters;3/3/2003, Vol. 82 Issue 9, p1365
Academic Journal
We screened bright blue phosphor materials for a ZnO-WO[sub 3] binary system. The film was deposited by combinatorial pulsed laser deposition at room temperature and then annealed. The film composition changes continuously in a full-range from ZnO to WO[sub 3] on a single substrate. We obtained two results from the distribution of blue emission-intensity observed by cathodoluminescence of the film: (1) not only did the film have a W composition of 50 mol % (stoichiometric ZnWO[sub 4] as the well-known blue phosphor material) but also the W composition region from 45 to 60 mol % had the most emissive phase, and (2) two emissive phases other than the ZnWO[sub 4], which have not been described in the phase diagram, were found in the W composition region from 10 to 20 mol % and from 65 to 75 mol %.


Related Articles

  • Mechanisms behind green photoluminescence in ZnO phosphor powders. Vanheusden, K.; Warren, W. L.; Seager, C. H.; Tallant, D. R.; Voigt, J. A.; Gnade, B. E. // Journal of Applied Physics;5/15/1996, Vol. 79 Issue 10, p7983 

    Presents information on a study which explored the mechanisms behind green photoluminescence in zinc oxide phosphor powders. Experimental procedure; Results and discussion; Conclusion.

  • Tungsten oxide proton conducting films for low-voltage transparent oxide-based thin-film transistors. Zhang, Hongliang; Wan, Qing; Wan, Changjin; Wu, Guodong; Zhu, Liqiang // Applied Physics Letters;2/4/2013, Vol. 102 Issue 5, p052905 

    Tungsten oxide (WOx) electrolyte films deposited by reactive magnetron sputtering showed a high room temperature proton conductivity of 1.38 × 10-4 S/cm with a relative humidity of 60%. Low-voltage transparent W-doped indium-zinc-oxide thin-film transistors gated by WOx-based electrolytes...

  • Application of heating microscopy to the study of thermal behaviour of ZnO-PO-WO glasses. Mošner, P.; Vorokhta, M.; Koudelka, L. // Journal of Thermal Analysis & Calorimetry;May2013, Vol. 112 Issue 2, p659 

    The effect of WO on thermal behaviour and thermal stability of ZnO-PO-WO glasses prepared in compositional series (100 − x)[0.5ZnO-0.5PO] − xWO ( x = 0-60) was investigated by heating microscopy and the results were correlated with the results determined by conventional...

  • Thermoluminescence properties of ZnO and ZnO:Yb nanophosphors. Pal, U.; Meléndrez, R.; Chernov, V.; Barboza-Flores, M. // Applied Physics Letters;10/30/2006, Vol. 89 Issue 18, p183118 

    ZnO and ZnO:Yb thermoluminescence nanophosphors have been developed and tested under beta radiation. Spherical nanoparticles of sizes ranging from 130 to 1200 nm were prepared through a glycol mediated chemical synthesis. The Yb doping had a thermoluminescence quenching effect compared to...

  • Ga-doping effects on electrical and luminescent properties of ZnO:(La,Eu)OF red phosphor thin films. Fujihara, Shinobu; Suzuki, Akira; KIMURA, Toshio // Journal of Applied Physics;8/15/2003, Vol. 94 Issue 4, p2411 

    Red thin-film phosphors were fabricated based on a ZnO:(La,Eu)OF nanocomposite structure where (La,Eu)OF nanoparticles were dispersed in a ZnO film matrix. The films were deposited on glass substrates by a sol-gel method at a low temperature of 600 °C using trifluoroacetic acid as a fluorine...

  • Fast photoluminescence decay processes of doped ZnO phosphors. Gupta, A.; Verma, N.K.; Bhatti, H.S. // Applied Physics B: Lasers & Optics;Apr2007, Vol. 87 Issue 2, p311 

    Lifetime measurements have been carried out for ZnO doped with killer impurities (Fe, Co or Ni) having doping concentrations 0.05 to 1.00% by weight using a pulsed UV laser (nitrogen laser) as the excitation source having a short pulse width and a high photon flux density. The high photon flux...

  • Microwave hydrothermal synthesis and white up-conversion emission of NaGd(WO):(Yb/Tm/Ho) phosphors. Xu, Huanzhi; Xu, Kang; Lu, Ading; Wang, Xiaoyan; Hu, Jiankun // Journal of Materials Science: Materials in Electronics;Jun2015, Vol. 26 Issue 6, p3921 

    NaGd(WO):(Yb/Tm/Ho) phosphors were synthesized by the microwave hydrothermal process. In the synthesis, different amounts of glycerine were added. The samples were characterized by XRD, SEM, and fluorescence spectrometer. The XRD and SEM results indicate that the different amounts of glycerine...

  • Temperature-dependent studies of defect-assisted light emission and excitation processes in crystalline ZnO nanowire phosphors. Omari, M.; Gupta, A.; Kouklin, N. // Journal of Applied Physics;Aug2010, Vol. 108 Issue 2, p024315 

    A series of photoluminescence and photoluminescence-excitation spectroscopies have been performed to probe the processes regulating defect-assisted light emission from one-dimensional ZnO nanowire phosphors in a wide temperature range of 123–463 K. The observed nonmonotonic change of the...

  • Undoped ZnO phosphor with high luminescence efficiency grown by thermal oxidation. Xiao, Zhiyan; Okada, Morihro; Han, Gui; Ichimiya, Masayoshi; Michibayashi, Katsuyoshi; Itoh, Tadashi; Neo, Yoichiro; Aoki, Toru; Mimura, Hidenori // Journal of Applied Physics;Oct2008, Vol. 104 Issue 7, p073512 

    Various ZnO morphologies with hexagonal cross sections were fabricated by a thermal oxidation method. Depending on the growth temperature, the lateral lengths of the hexagonal cross section varied from several hundred nanometers to the micrometer order. Comparing the cathodoluminescence (CL) of...


Read the Article


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

Try another library?
Sign out of this library

Other Topics