Cu-doped ZnO (Zn${}_{1-x}$Cu${}_x$O, $x=0.00,0.01,0.02,0.03$ and 0.04) nanorods (NRs) were grown on glass substrates by a seed-mediated hydrothermal method for gas sensing applications. The morphological and structural characterizations were performed by x-ray diffraction method (XRD) and scanning electron microscopy equipped with electron dispersive spectroscopy (EDS). Fabricated sensors were tested against H${}_2$, NO${}_2$, ethanol, acetone, xylene and toluene at different operation temperatures. It was found that Cu doping enhanced the sensor response of ZnO NRs especially towards ethanol. The highest sensor response against the ethanol were obtained with 2% and 3% Cu-doped ZnO NRs. Moreover, Cu-doping allowed us to operate ZnO NRs sensors at lower temperatures. Although pristine ZnO NRs did not show any sensor response at 100 °C, 2% Cu-doped sensors exhibited selective sensor behavior towards ethanol among the other tested gases.

掺铜氧化锌（Zn${}_{1-X}$铜${}_X$哦， $X=0.00,0.01,0.02,0.03$和 0.04) 纳米棒 (NRs) 通过种子介导的水热方法在玻璃基板上生长，用于气体传感应用。通过 X 射线衍射法 (XRD) 和配备电子色散光谱 (EDS) 的扫描电子显微镜进行形态和结构表征。制造的传感器针对 H 进行了测试${}_2$， 不${}_2$、乙醇、丙酮、二甲苯和甲苯在不同的操作温度下。结果表明，Cu 掺杂增强了 ZnO NRs 的传感器响应，尤其是对乙醇的响应。使用 2% 和 3% 的 Cu 掺杂 ZnO NRs 获得了对乙醇的最高传感器响应。此外，Cu 掺杂使我们能够在较低温度下操作 ZnO NRs 传感器。尽管原始的 ZnO NR 在 100 °C 下没有显示任何传感器响应，但 2% Cu 掺杂的传感器在其他测试气体中表现出对乙醇的选择性传感器行为。