کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1672292 | 1008931 | 2009 | 5 صفحه PDF | دانلود رایگان |
In this study, the effect of oxidizing gases, such as oxygen (O2), nitrogen dioxide (NO2), and ozone (O3), on a liquid-crystalline copper octakisalkylthiophthalocyanine[(C6S)8PcCu] thin film was investigated in the temperature range of 25–150 °C. Starting from a chloroform solution of (C6S)8PcCu, a jet-spray technique in an inert ambient atmosphere was used to coat the thin film of the compound on to an Interdigital Transducer (IDT) with gold electrodes. The concentration ranges for NO2 and O3 exposed to the (C6S)8PcCu thin film were 1–10 ppm and 50 ppb–50 ppm, respectively. The response time in NO2 measurements was observed to be approximately 1 min at room temperature, and it decreased to a few seconds with increasing temperature. A good sensor response of 2000% ppm− 1 was observed when the sensor was exposed to 1 ppm NO2 at room temperature. The oxidizing gases were found to be desorbed by annealing the thin film.
Journal: Thin Solid Films - Volume 517, Issue 22, 30 September 2009, Pages 6206–6210