TITLE

Tuning of the blue emission from europium-doped alkaline earth chloroborate thin films activated in air

AUTHOR(S)
Hao, Jianhua; Gao, J.; Cocivera, Michael
PUB. DATE
April 2003
SOURCE
Applied Physics Letters;4/28/2003, Vol. 82 Issue 17, p2778
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Thin films of M[SUB2]B[SUB5]O[SUB9]Cl:Eu (M = Ca, Sr, Ba) were prepared on glass substrates using spray pyrolysis. Blue cathodoluminescence due to the abnormal reduction of Eu[SUB3+] → Eu[SUB2+] was obtained by annealing films in air. The cation of the host lattice was found to affect the effectiveness of the reduction process, which could result in influencing the emission band. By selecting types and composition of alkaline cation, it was possible to tune the dominant emitting wavelength between 435 to 465 nm. Activation of the films occurred at temperatures suitable for the use of glass substrates.
ACCESSION #
9555519

 

Related Articles

  • On the 'band-A' emission and boron related luminescence in diamond. Ruan, J.; Kobashi, Koji // Applied Physics Letters;6/22/1992, Vol. 60 Issue 25, p3138 

    Examines the cathodoluminescence spectra of undoped and boron-doped diamond films. Features of the spectra; Deposition of p-type <111> silicon substrates in the films; Characteristics of the undoped and boron doped diamond films; Formation of the donor-acceptor pairs.

  • Electron-beam-induced optical memory effects in GaN. Chang, Y. C.; Cai, A. L.; Johnson, M. A. L.; Muth, J. F.; Kolbas, R. M.; Reitmeier, Z. J.; Einfeldt, S.; Davis, R. F. // Applied Physics Letters;4/15/2002, Vol. 80 Issue 15, p2675 

    Metastable effects in unintentionally doped GaN films grown on SiC substrates have been investigated using cathodoluminescence (CL). Memory effect patterns produced optically are observed in CL images. An electron beam can also produce memory effect patterns and the resulting changes in the...

  • Intra-4f-shell transitions at room temperature of Er3+ ions in Ca1-xErxF2+x thin films grown on Si(100). Barrière, A. S.; Raoux, S.; Garcia, A.; L’Haridon, H.; Lambert, B.; Moutonnet, D. // Journal of Applied Physics;1/15/1994, Vol. 75 Issue 2, p1133 

    Presents information on a study that examined intra-4f-shell transitions of Er ³+; ions in Ca[sub1 x]Er[subx]F[sub2+x] thin films by means of photoluminescence and cathodoluminescence measurements at room temperature. Experimental procedure; Results and discussion on the study; Conclusion.

  • Direct observation of hydrogen-related luminescent states in subsurface region of homoepitaxial diamond films. Hayashi, Kazushi; Watanabe, Hideyuki; Yamanaka, Sadanori; Okushi, Hideyo; Kajimura, Koji; Sekiguchi, Takashi // Applied Physics Letters;8/19/1996, Vol. 69 Issue 8, p1122 

    We found hydrogen-related luminescence in the subsurface region of chemical vapor deposited homoepitaxial diamond films by means of cathodoluminescence. A specific broad peak at around 540 nm is observed in the hydrogenated films, but not in the conventional oxidized films. The gap states...

  • Cathodoluminescence study of thin films of high Tc superconductors. Barkay, Z.; Azoulay, J.; Lereah, Y.; Dai, U.; Hess, N.; Racah, D.; Grünbaum, E.; Deutscher, G. // Applied Physics Letters;10/22/1990, Vol. 57 Issue 17, p1808 

    Cathodoluminescence (CL) of thin films of high Tc superconductors was studied in the scanning electron microscope. The depth and the lateral locations of the different phases can be revealed. In thin films, unlike the bulk superconductors, the CL information can be obtained either from the film...

  • Cathodoluminescence study of diamond films grown by microwave plasma assisted chemical vapor deposition. Yacobi, B. G.; Badzian, A. R.; Badzian, T. // Journal of Applied Physics;2/1/1991, Vol. 69 Issue 3, p1643 

    Presents a study that investigated the cathodoluminescence variations in polycrystalline diamond thin films grown by microwave plasma-assisted chemical vapor deposition. Analysis of the morphology of the diamond films; Comparison of the relative intensities of luminescence features in the...

  • Characterization of silicon dioxide film by high spatial resolution cathodoluminescence spectroscopy. Yoshikawa, M.; Matsuda, K.; Yamaguchi, Y.; Matsunobe, T.; Nagasawa, Y.; Fujino, H.; Yamane, T. // Journal of Applied Physics;12/15/2002, Vol. 92 Issue 12, p7153 

    We have measured the cathodoluminescence (CL) spectra of silicon dioxide (SiO[sub 2]) films prepared by a variety of methods and observed peaks at 280, 445, 480, 520, and 640 nm. A comparison of the CL and electron spin resonance spectra of Si-doped quartz glass showed that the 445 and 480 nm...

  • Oligomerization of butenes on borate-containing alumina. Lavrenov, A. V.; Duplyakin, V. K. // Kinetics & Catalysis;Mar2009, Vol. 50 Issue 2, p235 

    The effects of the chemical composition of borate-containing alumina on its physicochemical properties, catalytic activity, and selectivity in the oligomerization of butenes are reported. The preparation of catalysts containing 2.6–12.4 wt % B2O3 by modifying γ-alumina with orthoboric...

  • Phytosanitation of railway crossties with a hot borate solution immersion treatment. Taylor, Adam; Lloyd, Jeff // Forest Products Journal;Apr2009, Vol. 59 Issue 4, p76 

    Concern over pests in wood is limiting movement of products, including green railway crossties within the United States. Heat treatment is accepted for the phytosanitation of wood. Immersion in a hot borate solution achieved the heat treatment of green crossties in about 7 hours and significant...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics