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A light-emitting field-effect transistor based on a polyfluorene-ZnO nanoparticles film

机译:基于聚芴-ZnO纳米颗粒薄膜的发光场效应晶体管

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We report on a light-emitting organic field-effect transistor (LE-OFET) based on a polyfluorene (PFO)-ZnO nanoparticles film. We have analysed the behaviour of absorption, photoluminescence spectra and electroluminescence (EL) intensity of the PFO: ZnO hybrid films with different ZnO concentrations prepared in the FET configuration. We have found that the PFO: ZnO LE-OFET exhibits the current-voltage characteristics of a unipolar FET with saturation behaviour and operates in the hole accumulation mode. The FET mobility values in the PFO: ZnO films with a high ZnO concentration are close to the mobility of polycrystalline ZnO. A significant increase in the EL intensity of the hybrid films has been observed with an increase in the concentration of ZnO nanoparticles and with the application of gate voltages. The working mechanism of the LE-OFET device is discussed.
机译:我们报告了一种基于聚芴(PFO)-ZnO纳米颗粒薄膜的发光有机场效应晶体管(LE-OFET)。我们已经分析了在FET配置中制备的具有不同ZnO浓度的PFO:ZnO杂化膜的吸收,光致发光光谱和电致发光(EL)强度的行为。我们发现,PFO:ZnO LE-OFET表现出具有饱和行为的单极性FET的电流-电压特性,并以空穴累积模式工作。具有高ZnO浓度的PFO:ZnO膜中的FET迁移率值接近多晶ZnO的迁移率。随着ZnO纳米颗粒浓度的增加和栅极电压的施加,已经观察到杂化膜的EL强度显着增加。讨论了LE-OFET器件的工作机理。

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