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MOHAMMAD JAVAD JAFARI1,* , MOHAMMAD ESMAEIL AZIM-ARAGHI1, MAHTAB GHOLAMI1
Electrical properties of chloroaluminum phthalocyanine (CIAlPc) were investigated as a function of chemical environments. ClAlPc thin films were deposited onto interdigitated gold electrodes by thermal evaporation method with a thickness about 200 nm. The field emission scanning electron microscopy (FESEM) image showed ClAlPc nanosized particles (50- 80 nm) and X-ray diffraction confirmed that the thin films are in α-phase structure. Electrical measurements demonstrated that the semiconducting and photoconducting properties of ClAlPc thin films are influenced by working temperature and chemical environments. The sensitivity of devices versus humidity, ammonia and ethanol has been investigated as function of analyte concentration and working temperature. Devices were also used as chemiresistive sensors in chemical environments and it was found that devices can be also calibrated as humidity-selective sensor with respect to chemical vapor concentration at room temperature. Finally, long-time stability of devices was also investigated for a period of time and obtained results showed that the stability of devices is optimum in dry air in comparison with other environments..
Chloro-aluminum phthalocyanine, Electrical properties, Chemical environments, Humidity sensor, Chemiresistor.
MOHAMMAD JAVAD JAFARI, MOHAMMAD ESMAEIL AZIM-ARAGHI, MAHTAB GHOLAMI, Chemiresistive electrical properties of chloroaluminum phthalocyanine nanostructured thin films, Optoelectronics and Advanced Materials - Rapid Communications, 6, 9-10, September-October 2012, pp.868-874 (2012).
Submitted at: May 27, 2012
Accepted at: Sept. 20, 2012
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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