Abstract
The increasing knowledge of local order and detailed structural information on the neighboring atoms of impurity ions or radiation-induced defect states in borate glasses is a powerful argument for more detailed models leading to a better understanding of luminescence mechanisms, recombination kinetics, and other related phenomena. Examples of some previous models for the thermoluminescence quenching mechanisms for gamma-irradiated aluminoborate glasses doped with Fe are briefly revised. The Racah parameters and the ligand field intensity for a transition element ion such as Cr3+ are found to be useful parameters, sensitive to the nature of local symmetry and distortions, which can be controlled by an adequate glass composition design. The Fano antiresonances observed in the optical absorption spectra appear at the positions expected from the Tanabe–Sugano diagram. The optical absorption spectrum of barium aluminoborate glasses doped with Cr3+ and Nd3+ is merely a superposition of the respective independent absorptions. However, the fluorescence spectrum appears to be shifted, thus indicating the occurrence of an energy transfer process from Cr3+ to Nd3+ excited states, which is observed even at room temperature. Both the fluorescence and excitation spectra of glasses doped with chromium and neodymium show the Fano antiresonance effect but exhibit a Lamb shift of the valleys associated with neodymium over the emission bands of Cr3+.
Similar content being viewed by others
REFERENCES
Pontuschka, W.M., Oliveira, M.T., and Del Nery, S.M., Luminescence Quenching Mechanisms for γ-Irradiated Barium Aluminoborate Glasses Doped with Fe, in Borate Glasses, Crystals, and Melts, Wright, A.C., Feller, S.A., and Hannon, A.C., Eds., Sheffield: The Society of Glass Technology, 1997, pp. 392-398.
Griscom, D.L., ESR Studies of an Intrinsic Trapped-Electron Center in X-Irradiated Alkali Borate Glasses, J. Chem. Phys., 1971, vol. 55, no. 3, pp. 1113-1122.
Griscom, D.L., Taylor, P.C., Ware, D.A., and Bray, P.J., ESR Studies of Lithium Borate Glasses and Compounds γ-Irradiated at 77 K: Evidence for a New Interpretation of the Trapped-Hole Centers Associated with Boron, J. Chem. Phys., 1968, vol. 48, no. 11, pp. 5158-5173.
Mizukami, A., Isotani, S., Rabbani, S.R., and Pontuschka, W.M., Approximate Solution for Kinetic Differential Equations, Nuovo Cimento, 1993, vol. D15, no. 4, pp. 637-645.
Furtado, W.W., Tomé, T., Isotani, S., Antonini, A.R., Blak, A.R., Pontuschka, W.M., and Rabbani, S.R., Numerical Integration Method Applied to the Study of Atomic Hydrogen in Aluminoborate Glass, Anais da Academia Brasileira de Ciencias, 1989, vol. 61, no. 4, pp. 397-403.
Isotani, S., Furtado, W.W., Antonini, A.R., Blak, A.R., Pontuschka, W.M., Tomé, T., and Rabbani, S.R., Decay-Kinetics Study of Atomic Hydrogen in a-Si:(H, O, N) and Natural Beryl, Phys. Rev. B: Condens. Matter, 1990, vol. 42, no. 10, pp. 5966-5972.
Del Nery, S.M., Pontuschka, W.M., Isotani, S., and Rouse, C.G., Luminescence Quenching by Iron in Barium Aluminoborate Glasses, Phys. Rev. B: Condens. Matter, 1994, vol. 49, no. 6, pp. 3760-3765.
Pontuschka, W.M., Isotani, S., and Piccini, A., Optical and Thermal Bleaching of X-Irradiated Barium Aluminoborate Glasses, J. Am. Ceram. Soc., 1987, vol. 70, no. 1, pp. 59-64.
Krogh-Moe, J., Interpretation of the Infra-red Spectra of Boron Oxide and Alkali Borate Glasses, Phys. Chem. Glasses, 1965, vol. 6, no. 2, pp. 46-54.
Griscom, D.L., Borate Glass Structure, in Borate Glasses: Structure, Properties, and Applications, Pye, L.D., Frechette, V.D., Kreidl, N.J., Eds., New York: Plenum, 1978, pp. 11-149.
Taylor, P.C. and Griscom, D.L., Toward a Unified Interpretation of ESR Trapped-Hole Centers in Irradiated Borate Compounds and Glasses, J. Chem. Phys., 1971, vol. 55, no. 7, pp. 3610-3611.
Feigl, F.J., Fowler, W.B., and Yip, K.L., Oxygen Vacancy Model for the Center in SiO2, Solid State Commun., 1974, vol. 14, no. 3, pp. 220-225.
Sumi, H., Nonradiative Multiphonon Capture of Free Carriers by Deep-Level Defects in Semiconductors: Adiabatic and Nonadiabatic Limits, Phys. Rev. B: Condens. Matter, 1983, vol. 27, no. 4, pp. 2374-2386.
Del Nery, S.M., Luminescência em Vidros Aluminatos de Bário na Presenca de Processos Inibidores (in Portuguese) [Luminescence of Aluminoborate Glasses in the Presence of Inhibiting Processes (Engl. transl.)], Doctoral Thesis, São Paulo: Instituto de Física da Universidade de São Paulo, 1990.
Mott, N.F. and Davis, E.A., Electronic Processes in Non-Crystalline Materials, Oxford (UK): Clarendon, 1979.
Fano, U., Effects of Configuration Interaction on Intensities and Phase Shifts, Phys. Rev., 1961, vol. 124, no. 6, pp. 1866-1878.
Fano, U. and Cooper, J.W., Line Profiles in the Far UV Absorption Spectra of the Rare Gases, Phys. Rev., 1965, vol. 137, no. 5A, pp. A1364-A1379.
Sturge, M.D. and Guggenheim, H.J., Antiresonance in the Optical Spectra of Transition-Metal Ions in Crystals, Phys. Rev. B: Solid State, 1970, vol. 2, no. 7, pp. 2459-2471.
Lempicki, A., Andrews, L., Nettel, S.J., and McCollum, B.C., Spectroscopy of Cr3+ in Glasses: Fano Antiresonances and Vibronic “Lamb-Shift, ” Phys. Rev. Lett., 1980, vol. 44, no. 18, pp. 1234-1236.
Andrews, L.J., Lempicki, A., and McCollum, B.C., Spectroscopy and Photokinetics of Chromium(III) in Glass, J. Chem. Phys., 1981, vol. 74, no. 10, pp. 5526-5538.
Strek, W., Lukowiak, E., and Jezowska-Trzebiatowska, B., Observation of Antiresonances in Fluorescence Spectra of Cr+3 and Nd+3 Doped Glasses, Z. Naturforsch., A: Phys. Sci., 1983, vol. 38, no. 9, pp. 587-588.
Vergara, I., Camarillo, E., Sanz-Garcia, J., Garcia Solé, J., and Jacque, F., Solid State Commun., 1992, vol. 82, no. 9, pp. 733-737.
Tanabe, Y. and Sugano, S., On the Absorption Spectra of Complex Ions: I and II, J. Phys. Soc. Jpn., 1954, vol. 9, no. 8, pp. 753-779.
Rasheed, F., O'Donnel, K.P., Henderson, B., and Hollist, D.B., Disorder and the Optical Spectroscopy of Cr3+-Doped Glasses: I. Silicate Glasses, J. Phys.: Condens. Matter, 1991, vol. 3, no. 12, pp. 1915-1930.
Karapetyan, G.O., Lunter, S.G., and Yudin, D.M., Luminescence of Chromium-Activated Glasses, Opt. Spectrosc., 1963, vol. 14, no. 5, pp. 370-372.
Yamaga, M., Henderson, B., and O'Donnel, K.P., Tunneling between 4T2 and 2E States of Cr3+ Ions with Small Energy Separation-The Case of GSGG, J. Phys.: Condens. Matter, 1989, vol. 1, no. 46, pp. 9175-9182.
Ymaga, M., Henderson, B., O'Donnel, K.P., Trager-Cowan, C., and Marshall, A., Temperature Dependence of the Life Time of Cr3+ Luminescence in Garnet Crystals, Appl. Phys. B, 1990, vol. 50, no. 5, pp. 425-431.
Fuxi, G. and Huimin, L., Spectroscopy of Transition Metal Ions in Inorganic Glasses, J. Non-Cryst. Solids, 1986, vol. 80, pp. 20-33.
Li J., Li, B., Wen, J.K., and Wang, H.F., Sensitization of Nd3+ Luminescence by Cr3+ in Nd: MgO: LiNbO3 Crystals, Opt. Commun., 1993, vol. 98, nos. 4-6, pp. 261-264.
Lamb, W., Fine Structure of the Hydrogen Atom: III, Phys. Rev., 1952, vol. 85, no. 2, pp. 259-276.
Landry, L.J., Fournier, F.T., and Young, C.G., Electron Paramagnetic Resonance and Optical Absorption Studies of Cr3+ in a Phosphate Glass, J. Chem. Phys., 1967. vol. 46, no. 4, pp. 1285-1290.
O'Reilly, D.E. and McIver, D.S., Electron Paramagnetic Resonance Absorption of Chromia-Alumina Catalysts, J. Phys. Chem., 1962, vol. 66, no. 1, pp. 276-281.
Iwamoto, N. and Makino, Y., State of the Chromium Ion in Soda Silicate Glasses under Various Oxygen Pressures, J. Non-Cryst. Solids, 1980, vol. 41, pp. 257-266.
Griscom, D.L., Electron Spin Resonance in Glasses, J. Non-Cryst. Solids, 1980, vol. 40, pp. 211-272.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Pontuschka, W.M., Kanashiro, L.S. & Courrol, L.C. Luminescence Mechanisms for Borate Glasses: The Role of Local Structural Units. Glass Physics and Chemistry 27, 37–47 (2001). https://doi.org/10.1023/A:1009507803955
Issue Date:
DOI: https://doi.org/10.1023/A:1009507803955