Time-dependence of erbium(III) tris(8-hydroxyquinolate) near-infrared photoluminescence: implications for organic light-emitting diode efficiency

被引:61
作者
Magennis, SW
Ferguson, AJ
Bryden, T
Jones, TS
Beeby, A
Samuel, IDW [1 ]
机构
[1] Univ St Andrews, Sch Phys & Astron, Ultrafast Photon Collaborat, St Andrews KY16 9SS, Fife, Scotland
[2] Univ London Imperial Coll Sci & Technol, Dept Chem, Ctr Elect Mat & Devices, Ultrafast Photon Collaborat, London SW7 2AY, England
[3] Univ Durham, Dept Chem, Durham DH1 3LE, England
基金
英国工程与自然科学研究理事会;
关键词
erbium; photoluminescence; 8-hydroxyquinolate; OLED;
D O I
10.1016/S0379-6779(02)00501-5
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report the first time-resolved photoluminescence studies of erbium tris(8-hydroxyquinolate), [ErQ(3)], as a powder, a thin film blend with polycarbonate. an evaporated film and in DMSO-d(6) solution. The I-4(13/2) --> I-4(15/2) transition at 1.5 mum displays biexponential kinetics with photoluminescence lifetimes in the region of 0.2 mus for the powder, 0.4 mus for the thin film blend, 0.9 mus for the evaporated film, and 2 mus in solution. These observed lifetimes are much shorter than the natural radiative lifetimes of this Er3+ transition, implying photoluminescence quantum yields that range from 0.002 to 0.03%. This has significant consequences for the device efficiencies achievable by near IR-emitting organic light-emitting diodes (OLEDs) containing [ErQ(3)] as the emissive layer. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:463 / 469
页数:7
相关论文
共 26 条
  • [1] IR SPECTRA OF LANTHANIDE 8-HYDROXYQUINOLINE COMPLEXES
    ALY, HF
    ABDELKER.FM
    KANDIL, AT
    [J]. JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1971, 33 (12): : 4340 - &
  • [2] Direct NMR and luminescence observation of water exchange at cationic ytterbium and europium centres
    Batsanov, AS
    Beeby, A
    Bruce, JI
    Howard, JAK
    Kenwright, AM
    Parker, D
    [J]. CHEMICAL COMMUNICATIONS, 1999, (11) : 1011 - 1012
  • [3] Luminescence from neodymium(III) in solution
    Beeby, A
    Faulkner, S
    [J]. CHEMICAL PHYSICS LETTERS, 1997, 266 (1-2) : 116 - 122
  • [4] Non-radiative deactivation of the excited states of europium, terbium and ytterbium complexes by proximate energy-matched OH, NH and CH oscillators: an improved luminescence method for establishing solution hydration states
    Beeby, A
    Clarkson, IM
    Dickins, RS
    Faulkner, S
    Parker, D
    Royle, L
    de Sousa, AS
    Williams, JAG
    Woods, M
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1999, (03): : 493 - 503
  • [5] Correlation between molecular packing and optical properties in different crystalline polymorphs and amorphous thin films of mer-tris(8-hydroxyquinoline)aluminum(III)
    Brinkmann, M
    Gadret, G
    Muccini, M
    Taliani, C
    Masciocchi, N
    Sironi, A
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (21) : 5147 - 5157
  • [6] Silicon-based organic light-emitting diode operating at a wavelength of 1.5 μm
    Curry, RJ
    Gillin, WP
    Knights, AP
    Gwilliam, R
    [J]. APPLIED PHYSICS LETTERS, 2000, 77 (15) : 2271 - 2273
  • [7] 1.54 μm electroluminescence from erbium (III) tris(8-hydroxyquinoline) (ErQ)-based organic light-emitting diodes
    Curry, RJ
    Gillin, WP
    [J]. APPLIED PHYSICS LETTERS, 1999, 75 (10) : 1380 - 1382
  • [8] Infra-red and visible electroluminescence from ErQ based OLEDs
    Curry, RJ
    Gillin, WP
    [J]. SYNTHETIC METALS, 2000, 111 (111) : 35 - 38
  • [9] THE GOLDEN-AGE OF OPTICAL-FIBER AMPLIFIERS
    DESURVIRE, E
    [J]. PHYSICS TODAY, 1994, 47 (01) : 20 - 27
  • [10] Erbium (III) tris(8-hydroxyquinoline) (ErQ):: A potential material for silicon compatible 1.5 μm emitters
    Gillin, WP
    Curry, RJ
    [J]. APPLIED PHYSICS LETTERS, 1999, 74 (06) : 798 - 799