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Sensitivity Improvement of Urchin-Like ZnO Nanostructures Using Two-Dimensional Electron Gas in MgZnO/ZnO

机译:使用二维电子气在MgZnO / ZnO中改善类似Urchin的ZnO纳米结构的灵敏度

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摘要

This paper introduces a strategy for improving the sensitivity of a gas sensor to NO gas. The gas sensor was fabricated using urchin-like ZnO nanostructures grown on MgO particles via vapor-phase growth and decorated with MgZnO nanoparticles via a sol-gel process. The urchin-like ZnO gas sensor decorated with MgZnO showed higher sensitivity to NO gas than a pristine urchin-like ZnO gas sensor. When ZnO and MgZnO form a heterojunction, a two-dimensional electron gas is generated. This improves the performance of the fabricated gas sensor. The growth morphology, atomic composition, and phase structure were confirmed through field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction, respectively.
机译:本文介绍了一种提高气体传感器对NO气体的灵敏度的策略。气体传感器使用通过汽相生长在MgO颗粒上生长的海胆状ZnO纳米结构制造,并通过溶胶-凝胶工艺用MgZnO纳米颗粒装饰。装饰有MgZnO的类似urchin的ZnO气体传感器比原始的类似urchin的ZnO气体传感器对NO气体的灵敏度更高。当ZnO和MgZnO形成异质结时,产生二维电子气。这改善了所制造的气体传感器的性能。通过场发射扫描电子显微镜,能量色散X射线光谱法和X射线衍射分别确认了生长形态,原子组成和相结构。

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