High-purity and size-controlled Rh nanocubes (RhNCs) with plasmonic responses in the ultraviolet spectrum range were synthesized; the ultraviolet plasmonic features of RhNCs have potential applications in wide bandgap semiconductors and optoelectronic devices because of their optical tunability and stability, as well as the compatibility with neighboring semiconductor micro/nanostructures. In this work, by incorporating RhNCs, the near-band-edge emission of a single ZnO microwire is considerably enhanced. When optically pumped by a fs pulsed laser at room temperature, RhNCs-plasmon enhanced high-performance whispering gallery mode (WGM) lasing characteristics, including lower lasing threshold, higher Q-factor, and lasing output enhancement, can be achieved from a single ZnO microwire covered by RhNCs. To further probe the modulation effect of RhNCs plasmons on the lasing characteristics of the ZnO microwires, time-resolved photoluminescence (TRPL) and electromagnetic simulation analyses were also performed. Based on our results, it can be concluded that size-controlled RhNCs with ultraviolet energy-tunable plasmons have the potential for use in optoelectronic devices requiring stable and high-performance in the short wavelength spectrum band owing to their unique ultraviolet plasmonic features.

中文翻译：

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使用Rh纳米立方体的单根ZnO微丝中的高性能激光发射。

合成了在紫外光谱范围内具有等离子体响应的高纯度和尺寸可控的Rh纳米立方体（RhNCs）；RhNCs的紫外线等离子体特征因其光学可调性和稳定性以及与相邻半导体微/纳米结构的兼容性而在宽带隙半导体和光电器件中具有潜在的应用。在这项工作中，通过合并RhNC，单根ZnO微线的近带边缘发射得到了显着增强。当在室温下由fs脉冲激光进行光泵浦时，RhNCs-等离激元增强了高性能耳语画廊模式（WGM）的激光发射特性，包括较低的发射阈值，较高的Q可以通过RhNC覆盖的单根ZnO微线实现高倍率和激光输出增强。为了进一步探究RhNCs等离子体激元对ZnO微线激光发射特性的调制作用，还进行了时间分辨光致发光（TRPL）和电磁仿真分析。根据我们的结果，可以得出结论，具有紫外线能量可调等离子体激元的尺寸受控RhNC由于其独特的紫外线等离子体特征而具有在短波长光谱中需要稳定和高性能的光电器件中的潜力。