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利用简单的化学气相沉积方法在低温下高产量地合成了ZnO纳米带,并利用磁控溅射对样品进行表面修饰,制备了Au-ZnO复合纳米带.通过扫描电镜、透射电镜及微区拉曼等手段系统地研究了表面修饰对ZnO纳米材料发光性能的影响.结果表明,在ZnO纳米带上溅射Au纳米颗粒,可有效增强其近带边发光并使可见发光强度发生淬灭,从而增强ZnO纳米带的发光性能.ZnO纳米带发光增强因子η最大可达到85倍.基于Au纳米颗粒的散射、吸收、Purcell增强因子,以及Ostwald熟化理论,又进一步探讨了Au-ZnO复合材料的发光机制.采用表面等离子体耦合的方法可以有效地提高光电半导体器件的发光效率.
ZnO nanoribbons were synthesized by simple chemical vapor deposition (CVD) at high yield and the Au-ZnO nanoribbons were prepared by surface modification of magnetron sputtering.The scanning electron microscopy (SEM), transmission electron microscopy Mann et al. Systematically studied the effect of surface modification on the luminescent properties of ZnO nanomaterials. The results show that sputtering Au nanoparticles on ZnO nanoribbons can effectively enhance the near-edge emission and quench the visible luminescence intensity Enhances the luminescent properties of ZnO nanoribbons.The emission enhancement factor η of ZnO nanoribbons can reach up to 85 times.According to the scattering, absorption, Purcell enhancement factor of Au nanoparticles and Ostwald ripening theory, the luminescence of Au-ZnO nanocomposite Mechanism.Using surface plasmon coupling method can effectively improve the luminous efficiency of optoelectronic semiconductor devices.