论文标题
氮掺杂$ _2 $ o $ _3 $ -zno纳米复合薄膜基于敏感和选择性乙醇传感器
Nitrogen doped In$_2$O$_3$-ZnO nanocomposite thin film based sensitive and selective ethanol sensor
论文作者
论文摘要
纳米复合金属氧化物薄膜表现出在气体传感器领域的质量，这是由于异源地层提供的集体机会。在这项工作中，我们介绍了$ _2 $ o $ _3 $ -zno纳米复合薄膜的氮掺杂中孔的合成，该薄膜采用简单的湿化学方法，使用尿素作为氮前体。 SEM调查表明形成了介孔纳米复合薄膜，其中表面孔分布的均匀性取决于$ _2 $ o $ $ _3 $和复合材料中的Zno的相对比例。 HRTEM调查表明，在纳米复合薄膜中，N-in $ _2 $ o $ _3 $和n-Zno Grains之间形成了尖锐的接口。纳米复合薄膜已经在广泛的温度，乙醇蒸气浓度和相对湿度的范围内测试了其乙醇感应性能。氮掺杂的纳米复合薄膜，在$ _2 $ o $ _3 $中的比例均等，ZnO在合理的工作温度下表现出出色的乙醇感测性能（在200°C时约为94％，在50 ppm的乙醇中，乙醇的乙醇），快速响应时间（〜2秒），稳定性越来越多，可以增强弹性的稳定性。
Nanocomposite metal oxide thin films exhibit assuring qualities in the field of gas sensors because of the collective opportunities provided by the heterointerface formation. In this work, we present the synthesis of nitrogen doped mesoporous In$_2$O$_3$-ZnO nano-composite thin films by simple wet chemical method using urea as the nitrogen precursor. SEM investigation suggests formation of mesoporous nano-composite thin films, where the uniformity of surface pore distribution depends on the relative proportion of In$_2$O$_3$ and ZnO in the composites. HRTEM investigation suggest formation of sharp interfaces between N-In$_2$O$_3$ and N-ZnO grains in the nano-composite thin films. The nano-composite thin films have been tested for their ethanol sensing performance over an extensive range of temperature, ethanol vapor concentration and relative humidity. Nitrogen doped nano-composite thin film with equal proportion of In$_2$O$_3$ and ZnO exhibits excellent ethanol sensing performance at a reasonable operating temperature (~94 % at 200 °C for 50 ppm of ethanol), fast response time (~two seconds), stability over time, enhanced resilience against humidity and selectivity to ethanol over various other volatile organic compounds.
