Zinc oxide (ZnO) nanorod films with thickness of 700 nm were prepared via a chemical bath deposition method using a ZnO seed layer deposited on a silicon substrate by a conventional dip-coating technique. The morphology and structural properties of the obtained ZnO nanorods were characterized by field emission scanning electron microscopy and Raman spectroscopy. Photoluminescence spectroscopy exhibited an intense emission located at 380 nm related to near band edge (NBE) recombination and a yellow emission band at 575 nm attributed to intrinsic defects of ZnO. Changes in intensity of the NBE and yellow emissions were determined through room-temperature photoluminescence measurements of ZnO nanorods films when exposed to vapors of ethanol, methanol and tequila-methanol mixtures respectively. ZnO nanorods based sensors showed rapid response times and moderate recovery times together with good selectivity for methanol and ethanol vapors. For tequila-methanol mixtures samples, the change in photoluminescence intensity of both said emissions of ZnO nanorods presented an opposite behavior in comparison against methanol and ethanol samples. Intensity changes of the NBE emission showed a linear trend depending on the increase in methanol concentration, while the yellow emission intensity presented an exponential trend for concentrations below 50 % of methanol in tequila.

通过化学浴沉积方法，通过使用常规浸涂技术在硅基板上沉积的ZnO种子层，通过化学浴沉积方法制备了厚度为700 nm的氧化锌（ZnO）纳米棒膜。通过场发射扫描电子显微镜和拉曼光谱表征了所得ZnO纳米棒的形貌和结构性能。光致发光光谱显示出与近带边缘（NBE）重组有关的位于380 nm处的强发射，以及归因于ZnO固有缺陷的在575 nm处的黄色发射带。当分别暴露于乙醇，甲醇和龙舌兰酒-甲醇混合物的蒸汽中时，通过室温ZnO纳米棒膜的光致发光测量来确定NBE强度和黄色发射的变化。基于ZnO纳米棒的传感器显示出快速的响应时间和适度的恢复时间，以及对甲醇和乙醇蒸气的良好选择性。对于龙舌兰酒-甲醇混合物样品，与甲醇和乙醇样品相比，上述两种ZnO纳米棒发射光致发光强度的变化呈现相反的行为。NBE排放强度的变化呈线性趋势，具体取决于甲醇浓度的增加，而黄色排放强度呈现的龙舌兰酒中甲醇浓度低于50％时呈指数趋势。与甲醇和乙醇样品相比，上述两种ZnO纳米棒发射光致发光强度的变化呈现出相反的行为。NBE排放强度的变化呈线性趋势，具体取决于甲醇浓度的增加，而黄色排放强度呈现的龙舌兰酒中甲醇浓度低于50％时呈指数趋势。与甲醇和乙醇样品相比，上述两种ZnO纳米棒发射光致发光强度的变化呈现相反的行为。NBE排放强度的变化呈线性趋势，具体取决于甲醇浓度的增加，而黄色排放强度呈现的龙舌兰酒中甲醇浓度低于50％时呈指数趋势。