| Electric Field-Induced Quenching of Photoluminescence from Ir（PPY）3-Doped PVK |
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| 作者姓名： | LIYun-Bai HOUYan-Bing TENGFeng XUXu-Rong |
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| 作者单位： | InstituteofOptoelectronicTechnology,BeijingJiaotongUniversity,Beijing100044 |
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| 摘 要： | We study the photoluminescence (PL) and the PL dynamics of Ir(PPY)3-doped poly(N-vinylcarbazol) (PVK) under the modulation of an electric field. Tile results show that the electric-field-induced quenching of PL from Ir(PPY)3-doped PVK mainly comes from the dissociation of excitons in the chains of PVK. There is no significant difference in the excited state lifetime of Ir(PPY)3 to be observed under the different applied negative biases.Our experiments demonstrate that the excitons attached to the molecules of lr(PPY)3 are very stable.
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| 关 键 词： | 光致发光 激发态寿命 有机发光二极管 铱掺杂 PVK |
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