The ability to manipulate light–matter interaction in semiconducting nanostructures is fascinating for implementing functionalities in advanced optoelectronic devices. Here, we report the tailoring of radiative emissions in a ZnTe/ZnTe:O/ZnO core–shell single nanowire coupled with a one-dimensional aluminum bowtie antenna array. The plasmonic antenna enables changes in the excitation and emission processes, leading to an obvious enhancement of near band edge emission (2.2 eV) and subgap excitonic emission (1.7 eV) bound to intermediate band states in a ZnTe/ZnTe:O/ZnO core–shell nanowire as well as surface-enhanced Raman scattering at room temperature. The increase of emission decay rate in the nanowire/antenna system, probed by time-resolved photoluminescence spectroscopy, yields an observable enhancement of quantum efficiency induced by local surface plasmon resonance. Electromagnetic simulations agree well with the experimental observations, revealing a combined effect of enhanced electric near-field intensity and the improvement of quantum efficiency in the ZnTe/ZnTe:O/ZnO nanowire/antenna system. The capability of tailoring light–matter interaction in low-efficient emitters may provide an alternative platform for designing advanced optoelectronic and sensing devices with precisely controlled response.

中文翻译：

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ZnTe / ZnTe：O / ZnO核壳纳米线与铝等离子领结天线阵列耦合的量身定制的发射特性

在先进的光电器件中实现功能的过程中，操纵半导体纳米结构中光与物质相互作用的能力令人着迷。在这里，我们报告了在ZnTe / ZnTe：O / ZnO核-壳单纳米线与一维铝领结天线阵列耦合中对辐射发射的定制。等离子体天线可以改变激发和发射过程，从而显着增强了绑定到ZnTe / ZnTe：O / ZnO磁芯中带状态的近带边缘发射（2.2 eV）和次能带激子发射（1.7 eV）–壳纳米线以及在室温下表面增强的拉曼散射。时间分辨光致发光光谱法探测了纳米线/天线系统中发射衰减率的增加，产生了由局部表面等离子体激元共振引起的量子效率的可观察到的增强。电磁仿真与实验观察结果非常吻合，揭示了在ZnTe / ZnTe：O / ZnO纳米线/天线系统中增强的电近场强度和量子效率提高的综合效果。在低效率的发射器中调整光-物质相互作用的能力可能为设计具有精确控制的响应的高级光电和传感设备提供一个替代平台。