Plasmon-exciton coupling is gaining increasing interest for enhancing the performance of optoelectronic, photonic and photo-catalytic devices. Herein we evaluate the interaction of excitons in zinc oxide tetrapods with surface plasmons of gold nanostructures with different morphologies. The gold nanostructures are grown in situ on ZnO tetrapods by means of a photochemical process, resulting in clean interfaces. The modification of the synthesis parameters results in different morphologies, as isolated nanoparticles, nano-domes or nanoparticles aggregates. Plasmon-exciton interaction is evaluated by means of cathodoluminescence spectroscopy and mapping at the nanoscale. The ZnO excitonic emission is strongly blue-shifted and broadened in close proximity of the gold nanostructures. This effect is explained by the formation of a Schottky barrier that is strongly mediated by the morphology of metal nanostructures.

等离子体激子耦合在提高光电、光子和光催化设备的性能方面越来越受到关注。在此，我们评估了氧化锌四足体中激子与具有不同形态的金纳米结构的表面等离子体的相互作用。金纳米结构原位生长通过光化学过程在 ZnO 四足体上形成清洁的界面。合成参数的修改导致不同的形态，如孤立的纳米颗粒、纳米圆顶或纳米颗粒聚集体。等离子体激子相互作用是通过阴极发光光谱和纳米级映射来评估的。ZnO 激子发射强烈蓝移并在金纳米结构附近变宽。这种效应可以通过肖特基势垒的形成来解释，肖特基势垒由金属纳米结构的形态强烈介导。