Both - and - heterojunctions of ZnO-MoS₂ have been fabricated in order to understand the performance of electron and hole transport properties in solar cells and a self-powered photodetector system. Atomically thin 2-dimensional (2D) MoS₂ was prepared by using a spin coating method with controlled process times, whereas ZnO nanowires were prepared by using a plasma sputtering deposition technique. The nanoscale morphologies, composites, and photoelectric properties of nanocomposites were examined using scanning electron microscopy, energy-dispersive X-ray spectroscopy, and micro-Raman scattering spectroscopy, respectively. 2D heteronanostructures have exhibited an enhanced performance as compared to single-material-based prototypes. In photovoltaic mode, - heterojunction of the ZnO-MoS₂-based prototype appears to have much better photoelectric conversion efficiency than that in the case with - junction, indicating highly effective hole transport properties of 2D MoS₂ materials. Both band broadening and band shift were observed. Furthermore, the bias, annealing, and synergistic effects on the generated photocurrents and the response times were evaluated. The newly designed prototype exhibits exceptional properties: a broadband spectral response, a high signal-to-noise ratio, and excellent stability.

中文翻译：

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两步法制备二维 MoS2/ZnO 纳米复合材料 - 具有增强光电性能的结

两个-和-的ZnO-MOS的异质结₂人为了理解电子和空穴传输特性的太阳能电池的性能和自供电光电探测器系统被制造。原子级薄的二维 (2D) MoS ₂ZnO 纳米线是通过使用控制工艺时间的旋涂方法制备的，而 ZnO 纳米线是通过使用等离子体溅射沉积技术制备的。分别使用扫描电子显微镜、能量色散 X 射线光谱和微拉曼散射光谱检查纳米复合材料的纳米级形态、复合材料和光电性能。与基于单一材料的原型相比，二维异质纳米结构表现出增强的性能。在光伏模式下，基于ZnO-MoS ₂的原型的-异质结似乎比具有-结的情况具有更好的光电转换效率，表明 2D MoS _{2 的}高效空穴传输特性材料。观察到能带展宽和能带偏移。此外，还评估了偏置、退火和对产生的光电流和响应时间的协同效应。新设计的原型展示了卓越的特性：宽带光谱响应、高信噪比和出色的稳定性。