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Formaldehyde(HCHO),a colorless and pungent-smelling gas,is confirmed be a huge threat to human health.The detection of formaldehyde is necessary and important.The Poly(3-hexythiophene)(P3HT)/ZnO organic-inorganic composite thin film was fabricated and used as the sensitive layer of organic thin film transistors(OTFT) by spray-deposited method to detect HCHO at room temperature.The process parameters such as P3HT/ZnO weight ratios and airbrushed masses were optimized.The results showed that P3HT/ZnO OTFT exhibited good sensing response to HCHO.Airbrushed mass of 1ml was the optimal mass,and the 1:1 and 1:5 weight ratios of P3HT/ZnO exhibited better sensing properties compared with others.OTFT gas sensors based on P3HT/ZnO composite film provides a novel promising approach to the detection of HCHO.
Formaldehyde (HCHO), a colorless and pungent-smelling gas, is confirmed as a huge threat to human health. The detection of formaldehyde is necessary and important. The Poly (3-hexythiophene) (P3HT) / ZnO organic-inorganic composite thin film was fabricated and used as the sensitive layer of organic thin film transistors (OTFT) by spray-deposited method to detect HCHO at room temperature. The process parameters such as P3HT / ZnO weight ratios and airbrushed masses were optimized. The results showed that P3HT / ZnO OTFT exhibited good sensing response to HCHO. Airbrushed mass of 1 ml was the optimal mass, and the 1: 1 and 1: 5 weight ratios of P3HT / ZnO reported better sensing properties than others. OTFT gas sensors based on P3HT / ZnO composite film provides a novel promising approach to the detection of HCHO.