두께와 온도에 따른 Octa(2-ethylhexyloxy) Copper-phthalocyanine LB막의 NO₂ 가스 탐지 특성에 관한 연구

A Study on the NO₂ Gas Detection Chracteristics of the Octa(2-ethylhexyloxy) Copper-Phthalocyanine LB Film Depending on the Film Thickness and Temperature

It is well known that the metallo- phthalocyanine(MPcs) are sensitive to toxic gaseous molecules such as NO₂ and also chemically and thermally stable, Therefore, lots of MPcs have been studied for the potential chemical sensor for NO₂ gas using quartz crystal microbalance(QCM) or electrical conductivity. In this study, ultra-thin films of octa(2-ethylhexyloxy)copper-phthalocyanine were prepared by Langmuir-Blodgett method and characterized by using UV-VIS absortion spectroscopy and ellipsometry. Transfer condition, and characterization of LB films were investigated and preliminary results of current-voltage(Ⅰ-Ⅴ) characteristics of these films exposed to NO₂ gas as a function of film thickness and temperature were discussed.