Zhang Renyun, Hummelgård Magnus, Ljunggren Joel, Olin Håkan
Department of Natural Science, Mid Sweden University, SE-851 70 Sundsvall, Sweden.
Department of Chemical Engineering, Mid Sweden University, SE-851 70 Sundsvall, Sweden.
Sensors (Basel). 2019 Sep 4;19(18):3815. doi: 10.3390/s19183815.
Metal-semiconductor junctions and interfaces have been studied for many years due to their importance in applications such as semiconductor electronics and solar cells. However, semiconductor-metal networks are less studied because there is a lack of effective methods to fabricate such structures. Here, we report a novel Au-ZnO-based metal-semiconductor (M-S) network in which ZnO nanowires were grown horizontally on gold particles and extended to reach the neighboring particles, forming an (M-S) network. The (M-S) network was further used as a gas sensor for sensing ethanol and acetone gases. The results show that the (M-S) network is sensitive to ethanol (28.1 ppm) and acetone (22.3 ppm) gases and has the capacity to recognize the two gases based on differences in the saturation time. This study provides a method for producing a new type of metal-semiconductor network structure and demonstrates its application in gas sensing.
金属-半导体结和界面因其在半导体电子学和太阳能电池等应用中的重要性而被研究了多年。然而，半导体-金属网络的研究较少，因为缺乏制造此类结构的有效方法。在此，我们报道了一种新型的基于金-氧化锌的金属-半导体（M-S）网络，其中氧化锌纳米线在金颗粒上水平生长并延伸至相邻颗粒，形成一个（M-S）网络。该（M-S）网络进一步用作气体传感器来检测乙醇和丙酮气体。结果表明，该（M-S）网络对乙醇（28.1 ppm）和丙酮（22.3 ppm）气体敏感，并且有能力基于饱和时间的差异识别这两种气体。本研究提供了一种制备新型金属-半导体网络结构的方法，并展示了其在气体传感中的应用。
