State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China.
Sensors (Basel). 2019 Mar 14;19(6):1290. doi: 10.3390/s19061290.
A highly sensitive and flexible hydrogen sensor based on organic nanofibers decorated by Pd nanoparticles (NPs) was designed and fabricated for low-concentration hydrogen detection. Pd NPs were deposited on organic nanofiber materials by DC magnetron sputtering. The temperature dependence of the sensitivity at 25 ppm H₂ was characterized and discussed, and the maximum response of the sensor increased linearly with increasing measurement temperature. Performances of the hydrogen sensor were investigated with hydrogen concentration ranging from 5 ppm to 50 ppm. This sensor exhibits high sensitivity, with the response up to 6.55% for H₂ as low as 5 ppm, and the output response of the hydrogen sensor increased linearly with the square root of hydrogen concentration. A cycling test between pure nitrogen and 25 ppm hydrogen concentration was performed, and the hydrogen sensor exhibited excellent consistency.
基于钯纳米粒子（NPs）修饰的有机纳米纤维设计并制造了一种高灵敏度和高柔性的氢气传感器，用于低浓度氢气检测。通过直流磁控溅射将 Pd NPs 沉积在有机纳米纤维材料上。对 25ppmH₂下的灵敏度的温度依赖性进行了表征和讨论，并且传感器的最大响应随测量温度的升高呈线性增加。使用氢气浓度范围为 5ppm 至 50ppm 的氢气对氢气传感器的性能进行了研究。该传感器表现出高灵敏度，对于低至 5ppm 的氢气，响应高达 6.55%，并且氢气传感器的输出响应与氢气浓度的平方根呈线性增加。在纯氮气和 25ppm 氢气浓度之间进行了循环测试，氢气传感器表现出优异的一致性。
