Due to their outstanding surface-to-volume ratio, highly smooth surface, and well-defined crystal boundary, semiconducting micro-/nanocrystals have been used as a pivotal platform to fabricate multifunctional optoelectronic devices, such as superresolution imaging devices, solar concentrators, photodetectors, light-emitting diodes (LEDs), and lasers. In particular, micro-/nanocrystals as key elements can be employed to tailor the fundamental optical and electronic transport properties of integrated hetero-/homostructures. Herein, ZnO microcrystal-decorated pre-synthesized Ga-doped ZnO microwire (ZnO@ZnO:Ga MW) was prepared. The single ZnO@ZnO:Ga MW can be used to construct optically pumped Fabry–Perot (F–P) mode microlasers, with the dominating lasing peaks centered in the violet spectral region. Stabilized exciton-polariton emissions from single ZnO@ZnO:Ga MW-based heterojunction diode can also be realized. The deposited ZnO microcrystals can facilitate the strong coupling of F–P optical modes with excitons, leading to the formation of exciton-polariton features in the ZnO@ZnO:Ga MW. Therefore, the waveguiding lighting behavior and energy-band alignment of ZnO microcrystal-sheathed ZnO:Ga MW radial structures should be extremely attractive for potential applications in semiconducting microstructure-based optoelectronic devices, such as micro-LEDs, laser microcavities, waveguides, and photodetectors.

中文翻译：

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来自单个 ZnO@ZnO:Ga 微线的微晶调制激子极化子发射

由于其出色的表面积与体积比、高度光滑的表面和明确的晶界，半导体微/纳米晶体已被用作制造多功能光电器件的关键平台，如超分辨率成像器件、太阳能聚光器、光电探测器、发光二极管 (LED) 和激光器。特别是，微/纳米晶体作为关键元素可用于定制集成异质/同质结构的基本光学和电子传输特性。在此，制备了 ZnO 微晶装饰的预合成 Ga 掺杂 ZnO 微线（ZnO@ZnO:Ga MW）。单个 ZnO@ZnO:Ga MW 可用于构建光泵浦法布里-珀罗 (F-P) 模式微激光器，主要激光峰集中在紫色光谱区域。也可以实现来自单个 ZnO@ZnO:Ga MW 基异质结二极管的稳定激子极化子发射。沉积的 ZnO 微晶可以促进 F-P 光学模式与激子的强耦合，导致在 ZnO@ZnO:Ga MW 中形成激子 - 极化子特征。因此，ZnO 微晶护套 ZnO:Ga MW 径向结构的波导照明行为和能带排列对于基于半导体微结构的光电器件（如 micro-LED、激光微腔、波导和光电探测器）的潜在应用具有极大的吸引力。 .