Green, blue, and yellow cathodoluminescence of Ba[sub 2]B[sub 5]O[sub 9]Cl thin-films doped with Tb[sup 3+], Tm[sup 3+], and Mn[sup 2+]

Hao, Jianhua; Gao, J.; Cocivera, Michael
April 2003
Applied Physics Letters;4/7/2003, Vol. 82 Issue 14, p2224
Academic Journal
Green, blue, and yellow cathodoluminescence (CL) have been obtained for thin-films of Ba[sub 2]B[sub 5]O[sub 9]C1 doped with Tb[sup 3+], Tm[sup 3+], and Mn[sup 2+], respectively. These phosphor films were deposited by spray pyrolysis, and then activated in air at temperatures suitable for use on glass substrates. The CL characteristic peaks of the films correspond to transitions between electronic energy levels of Tm[sup 3+], Tb[sup 3+], and Mn[sup 2+] ions. The chromaticity coordinates, dominant wavelength, and color purity were determined for each phosphor. Saturation effects were observed as the beam current density increased. The more severe current saturation of Mn-doped film may be due to a greater ground state deplection of Mn luminescent centers than that of the Tb and Tm.


Related Articles

  • Role of the Ce2+ Ions in Cerium Fluoride Luminescence. Snigireva, O. A.; Solomonov, V. I. // Physics of the Solid State;Aug2005, Vol. 47 Issue 8, p1443 

    Pulsed cathodoluminescence (PCL) of CeF3 crystals was studied using a KLAVI-type setup. PCL was excited by bombarding samples in air at room temperature using a 2-ns pulsed electron beam at an electron energy of 170 keV, current density of 160 A/cm2, and repetition rate of 2.5 Hz. Luminescence...

  • Rare earth doped core-shell particles as phosphor for warm-white light-emitting diodes. Korthout, K.; Smet, P. F.; Poelman, D. // Applied Physics Letters;6/27/2011, Vol. 98 Issue 26, p261919 

    Light-emitting diodes (LEDs) are efficient, energy-saving light sources. Unfortunately, designing phosphors for LEDs that emit warm white light is not straightforward. We solvothermally prepared rare earth doped alkaline earth sulfides with a core-shell structure in order to obtain a physical...

  • Scanning cathodoluminescence as a probe of surface recombination in phosphors excited a low... Seager, C. H.; Missert, N. A.; Tallant, D. R.; Warren, W. L. // Journal of Applied Physics;1/15/1998, Vol. 83 Issue 2, p1153 

    Presents a study which utilizes scanning cathodoluminescence as a prove of surface recombination in phosphors. Description of scanning cathodoluminescence; Methodology used to conduct the study; Results obtained from the study.

  • Glow-in-the-Dark Science. Sibley, Scott P.; McGuiness, Christine // Science Teacher;Apr2002, Vol. 69 Issue 4, p24 

    Focuses on the use of glow-in-the-dark objects in teaching students the nature of light. Exploration on the kinetics of phosphorescence; Explanation on the wave-particle nature of light; Calculation of the energy of light. INSET: Phosphorescence and the Photoelectric Effect..

  • High-efficiency green phosphorescence from spin-coated single-layer dendrimer light-emitting diodes. Markham, J. P. J.; Lo, S.-C.; Magennis, S. W.; Burn, P. L.; Samuel, I. D. W. // Applied Physics Letters;4/15/2002, Vol. 80 Issue 15, p2645 

    We demonstrate very high-efficiency green phosphorescence from a single-layer dendrimer organic light-emitting diode formed by spin-coating. A first generation fac-tris(2-phenylpyridine) iridium cored dendrimer doped into a wide-gap 4,4[sup ′]-bis(N-carbazole) biphenyl host displays a peak...

  • phosphorescence.  // Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p1777 

    A definition of the medical term "phosphorescence," which refers to induced luminescence following cessation of the irradiation that caused it, is presented.

  • Heavy Atom Effect on Photophysical Deactivation of Molecular Triplet States. Gastilovich, E. A.; Serov, S. A.; Korol’kova, N. V.; Klimenko, V. G. // Optics & Spectroscopy;Mar2000, Vol. 88 Issue 3, p313 

    The decrease in the spin-orbit (SO) interaction with increasing number of chlorine atoms in molecules of dibenzo-p-dioxine derivatives is found and explained. The heavy atom effect on components of the rate constant of phosphorescence k[sub ph] = k[sub SO] + k[sub VSO] related to SO and...

  • Digital phosphorimeter with frequency domain signal processing: Application to real-time fiber-optic oxygen sensing. Alcala, J. Ricardo; Yu, Clement; Yeh, Gong Jong // Review of Scientific Instruments;Jun93, Vol. 64 Issue 6, p1554 

    An instrument to measure the excited-state lifetimes of phosphorescent materials in real time is described. This apparatus uses pulsed and frequency-doubled Nd:YAG solid-state laser for excitation, sampler for data acquisition, and frequency domain methods for data fitting. The instrument...

  • High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer. Baldo, M.A.; Thompson, M.E. // Nature;2/17/2000, Vol. 403 Issue 6771, p750 

    Discusses the use of a phosphorescent sensitizer to obtain the maximum luminous efficiency from a fluorescent dye. Mechanism for energetic coupling between phosphorescent and fluorescent molecular species as a long-range, non-radiative energy transfer; Use of the approach to nearly quadruple...


Read the Article


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

Try another library?
Sign out of this library

Other Topics