期刊
APPLIED PHYSICS LETTERS
卷 77, 期 15, 页码 2280-2282出版社
AMER INST PHYSICS
DOI: 10.1063/1.1315629
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We have fabricated phosphorescent polymer light-emitting devices with tris(2-phenylpyridine) iridium [Ir(ppy)(3)] as a triplet emissive dopant in poly(vinylcarbazole) (PVK) host. The device with 8% doping concentration of [Ir(ppy)(3)] in PVK showed the external quantum efficiency of 1.9% and the peak luminance of 2,500 cd/m(2). The emission spectrum of the device exhibited no emission from PVK, indicating that the energy transfer from PVK to [Ir(ppy)(3)] is efficient. This work demonstrates that efficient electrophosphorescent light-emitting devices can be realized with polymers. (C) 2000 American Institute of Physics. [S0003-6951(00)00141-8].
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