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Surface accumulation conduction controlled sensing characteristic of p-type CuO nanorods induced by oxygen adsorption

机译:氧吸附诱导p型CuO纳米棒的表面累积传导控制传感特性

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摘要

P-type CuO nanorods were synthesized by a hydrothermal method and the ethanol-sensing properties of sensors based on CuO were investigated. The sensor resistance increased when it was exposed to ethanol and decreased in the air, which is contrary to the case for sensors realized from n-type semiconductor. The resistance of the CuO-based sensor was about 2 k OMEGA in air and 6 k OMEGA in ethanol vapour with concentration of 2000 ppm. Such a sensing property is attributed to surface accumulation conduction. Sensors based on CuO nanorods have potential applications in detecting ethanol in low concentration.
机译:利用水热法合成了P型CuO纳米棒,并研究了基于CuO的传感器的乙醇传感性能。当传感器暴露于乙醇中时,传感器电阻增加,而在空气中则减小,这与由n型半导体实现的传感器的情况相反。浓度为2000 ppm的基于CuO的传感器的电阻在空气中约为2 k OMEGA,在乙醇蒸气中约为6 k OMEGA。这样的感测特性归因于表面累积传导。基于CuO纳米棒的传感器在检测低浓度乙醇中具有潜在的应用。

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