고체산화물 연료전지 박막의 전기적 특성 연구

Abstract

The electrical properties of sputtered GDC thin films on Al_2O_3 substrates was studied. The electrical properties of the films were measured to evaluate the ion conductivity of GDC thin films for co-planar SOFC electrolytes. The impedance of the GDC thin films on Al_2O_3 substrates was affected by the film thickness and the impedance of thin film exhibited higher value than thick films. Similarly, the conductivity of the thick film showed much higher value than thin films. It indicated that the film thickness is the main factor affecting the conductivity and impedance of the GDC electrolyte for the co-planar SOFC.