連續離子層吸附沉積SnO2/Co3O4複合於水熱法成長之ZnO奈米線應用於異丙醇氣體感測器

Synthesis of SnO2/Co3O4 Composite via Sequential Ionic Layer Adsorption and Reaction Deposition on ZnO Nanowires Growth by Hydrothermal Method for Isopropanol Gas Sensing Application

本實驗主要採用水熱法以及連續離子層吸附沉積作為主要製成方法，以水熱法製備的ZnO奈米線具有成本低廉、易於製備、立體結構優異等特點。且ZnO奈米線擁有的高表面積的特點，使其用作氣體感測器具有很好的效果。連續離子層吸附沉積這個製程方法具有成本低廉、易於製備等特點。本實驗使用連續離子層吸附沉積複合半導體殼層（SnO2 ／Co3O4）於ZnO奈米線上，形成N-P異質接面，透過調整初始阻抗大小增強氣體感測能力以及複合特定材料增強針對異丙醇的選擇性。

This experiment primarily employs the hydrothermal method and sequential ionic layer adsorption and reaction deposition (SILAR) as the main fabrication techniques. ZnO nanowires prepared by the hydrothermal method exhibit characteristics such as low cost, easy preparation, and excellent three-dimensional structure. The high surface area of ZnO nanowires makes them effective for gas sensing applications. SILAR, as a cost-effective and easily prepared process, is utilized in this experiment to deposit a composite semiconductor shell (SnO2/Co3O4) onto ZnO nanowires, forming N-P heterojunction interfaces. By adjusting the initial impedance magnitude, the gas sensing capability is enhanced, and specific materials are integrated to enhance selectivity towards isopropanol.