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Facile depositing strategy to fabricate a hetero-affinity hybrid film for improving gas-sensing performance

机译：易于沉积策略，用于制造杂交杂交膜，以改善气体传感性能

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A novel co-spray method was proposed to fabricate a reduced graphene oxide (rGO)-poly (3-hexylthiophene) (P3HT) hybrid sensing device utilizing immiscible solution for ammonia detection at room temperature. The spectrum and Scanning Electron Microscopy (SEM) results revealed uniformly crimped morphology and favorable pi-pi interaction for the hybrid film. The hybrid film-based sensor showed obviously enhanced ammonia sensing performance, such as increased response, reduced response time, and reinforced sensitivity, in comparison to bare rGO, P3HT, and traditional rGO/P3HT layered film-based sensors, which could be attributed to an adsorption energy barrier and the p-n heterojunction effect. The synergetic strengthened sensing mechanism is discussed. Meanwhile, recovery ratio was introduced to evaluate the abnormal baseline drift induced high-response behavior. The excellent sensing properties of the hybrid sensor indicate that the co-spray method could be an alternative process for the preparation of hetero-affinity hybrid films or functional devices.
机译：提出了一种新的共喷雾方法，利用非混溶溶液在室温下制备还原氧化石墨烯（rGO）-聚（3-己基噻吩）（P3HT）混合传感器件，用于氨检测。光谱和扫描电子显微镜（SEM）结果显示，杂化膜具有均匀的卷曲形态和良好的pi相互作用。与裸rGO、P3HT和传统rGO/P3HT层状膜基传感器相比，混合膜基传感器表现出明显增强的氨传感性能，如响应增加、响应时间缩短和灵敏度增强，这可能归因于吸附能垒和p-n异质结效应。讨论了协同强化传感机理。同时，引入恢复率来评估异常基线漂移引起的高响应行为。混合传感器优异的传感性能表明，共喷雾法可以作为制备异质亲和性混合薄膜或功能器件的替代方法。

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