Light-emitting devices based on ruthenium (II) bipyridine complexes coupled with cadmium sulfide nanoparticles

被引:6
作者
Gong, X [1 ]
Ng, PK [1 ]
Chan, WK [1 ]
机构
[1] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China
关键词
organic electroluminescence; CdS nanoparticles; ruthenium bipyridine complex; charge mobility; light-emitting diodes;
D O I
10.1166/jnn.2002.089
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The fabrication of a light-emitting device based on a composite consisting of cadmium sulfide nanoparticle, poly(vinylalcohol), and ruthenium 2, 2'-bipyridyl complex is reported. The electroluminescence spectrum of this composite is similar to the combination of the emission from ruthenium complexes and cadmium sulfide. A stable electroluminescence at low threshold voltage (4 V), with a brightness of 680 cd/m(2) and an external quantum efficiency of approximately 0.2% was achieved. It was demonstrated that the cadmium sulfide nanoparticles were able to improve the performance of the device and enhance the electron carrier mobility as compared to the device based on pure ruthenium complex.
引用
收藏
页码:151 / 154
页数:4
相关论文
共 31 条
  • [1] Recent developments in the preparation and properties of nanometer-size spherical and platelet-shaped particles and composite particles
    Adair, JH
    Li, T
    Kido, T
    Havey, K
    Moon, J
    Mecholsky, J
    Morrone, A
    Talham, DR
    Ludwig, MH
    Wang, L
    [J]. MATERIALS SCIENCE & ENGINEERING R-REPORTS, 1998, 23 (4-5) : 139 - 242
  • [2] Semiconductor clusters, nanocrystals, and quantum dots
    Alivisatos, AP
    [J]. SCIENCE, 1996, 271 (5251) : 933 - 937
  • [3] High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer
    Baldo, MA
    Thompson, ME
    Forrest, SR
    [J]. NATURE, 2000, 403 (6771) : 750 - 753
  • [4] Highly efficient phosphorescent emission from organic electroluminescent devices
    Baldo, MA
    O'Brien, DF
    You, Y
    Shoustikov, A
    Sibley, S
    Thompson, ME
    Forrest, SR
    [J]. NATURE, 1998, 395 (6698) : 151 - 154
  • [5] BURROUGHES JH, 1990, NATURE, V539, P347
  • [6] Enhanced luminance in polymer composite light emitting devices
    Carter, SA
    Scott, JC
    Brock, PJ
    [J]. APPLIED PHYSICS LETTERS, 1997, 71 (09) : 1145 - 1147
  • [7] Light-emitting multifunctional rhenium (I) and ruthenium (II) 2,2′-bipyridyl complexes with bipolar character
    Chan, WK
    Ng, PK
    Gong, X
    Hou, SJ
    [J]. APPLIED PHYSICS LETTERS, 1999, 75 (25) : 3920 - 3922
  • [8] Photoconductivity and charge transporting properties of metal-containing poly(p-phenylenevinylene)s
    Chan, WK
    Gong, X
    Ng, WY
    [J]. APPLIED PHYSICS LETTERS, 1997, 71 (20) : 2919 - 2921
  • [9] Electroluminescence of different colors from polycation/CdTe nanocrystal self-assembled films
    Gao, MY
    Lesser, C
    Kirstein, S
    Möhwald, H
    Rogach, AL
    Weller, H
    [J]. JOURNAL OF APPLIED PHYSICS, 2000, 87 (05) : 2297 - 2302
  • [10] Effect of γ-ray irradiation on structures and luminescent properties of nanocrystalline MSO4:xEu3+ (M = Ca, Sr, Ba; x=0.001-0.005)
    Gong, X
    Wu, PF
    Chan, WK
    Chen, WJ
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2000, 61 (01) : 115 - 121