White light emission from radical carbonyl-terminations in Al2O3-SiO2 porous glasses with high luminescence quantum efficiencies

被引：73
作者：
Hayakawa, T [1 ]
Hiramitsu, A [1 ]
Nogami, M [1 ]
机构：
[1] Nagoya Inst Technol, Dept Mat Sci & Engn, Showa Ku, Nagoya, Aichi 4668555, Japan
来源：
APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 18期
关键词：
D O I：
10.1063/1.1569038
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Development of white phosphors with highly emissive, stable, and less toxic characteristics has been important for display and lighting technology. In this letter, it is shown that sol-gel-derived glasses of aluminosilicate composition, followed by a heat treatment in air at low temperatures around 500 degreesC, exhibit two intense, visible photoluminescence bands: One is due to point defects in these glasses and the other comes from radical carbonyl-terminations on the surface of pores. The photoluminescence provides a white light with high luminescence quantum efficiency (similar to66.5%) under long-wavelength ultraviolet excitation. (C) 2003 American Institute of Physics.
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页码：2975 / 2977
页数：3
相关论文
共 15 条
  • [1] CHARACTERIZATION OF POROUS SILICON INHOMOGENEITIES BY HIGH-SPATIAL-RESOLUTION INFRARED-SPECTROSCOPY
    BORGHESI, A
    SASSELLA, A
    PIVAC, B
    PAVESI, L
    [J]. SOLID STATE COMMUNICATIONS, 1993, 87 (01) : 1 - 4
  • [2] On the origin of blue luminescence arising from atmospheric impregnation of oxidized porous silicon
    Canham, LT
    Loni, A
    Calcott, PDJ
    Simons, AJ
    Reeves, C
    Houlton, MR
    Newey, JP
    Nash, KJ
    Cox, TI
    [J]. THIN SOLID FILMS, 1996, 276 (1-2) : 112 - 115
  • [3] White phosphors from a silicate-carboxylate sol-gel precursor that lack metal activator ions
    Green, WH
    Le, KP
    Grey, J
    Au, TT
    Sailor, MJ
    [J]. SCIENCE, 1997, 276 (5320) : 1826 - 1828
  • [4] Luminescence of Eu3+, Tb3+ and Tm3+ in SrLaGa3O7
    Kubota, S
    Izumi, M
    Yamane, H
    Shimada, M
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 283 (1-2) : 95 - 101
  • [5] InGaN/GaN/AlGaN-based laser diodes with modulation-doped strained-layer superlattices
    Nakamura, S
    Senoh, M
    Nagahama, S
    Iwasa, N
    Yamada, T
    Matsushita, T
    Kiyoku, H
    Sugimoto, Y
    Kozaki, T
    Umemoto, H
    Sano, M
    Chocho, K
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1997, 36 (12A): : L1568 - L1571
  • [6] Recombination dynamics of localized excitons in In0.20Ga0.80N-In0.05Ga0.95 multiple quantum wells
    Narukawa, Y
    Kawakami, Y
    Fujita, S
    Fujita, S
    Nakamura, S
    [J]. PHYSICAL REVIEW B, 1997, 55 (04) : R1938 - R1941
  • [7] Nishida T, 1999, PHYS STATUS SOLIDI A, V176, P45, DOI 10.1002/(SICI)1521-396X(199911)176:1<45::AID-PSSA45>3.0.CO
  • [8] 2-0
  • [9] Effect of OK bonds on persistent spectral hole burning of Sm2+-doped glasses
    Nogami, M
    Hiraga, T
    Hayakawa, T
    [J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1998, 241 (2-3) : 98 - 104
  • [10] Radtsig V. A., 1978, Kinet. Katal, V19, P713
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