酞菁铜蒸发膜电导特性的电极效应

本文研究了不同电极材料(Au、Ag、Cu、Al和SnO₂、In₂O₃)对酞菁铜(PcCu)蒸发膜V-I特性的影响.用同样的金属(Au、Ag、Cu)作顶底电极时,改变电极极性所得暗电流是对称的,V-I特性属典型的SCLC型.而Al/PcCu/Al体系呈现阻挡接触,估计这是蒸得的Al电极上存在氧化层之故.当Al作顶电极,玻璃基片上的SnO₂或In₂O₃层作底电极时,Al极加负电压观察到SCLC,而当SnO₂极加负电压时观察到电极限制电流,In₂O₃极加负电压时观察到负阻效应.

EFFECT OF ELECTRODE MATERIALS ON V-I CHARACTERISTICS OF EVAPORATED FILMS OF COPPER PHTHALOCYANINE

The effect of electrode materials on the V-I characteristics of evaporated film of copper phthalooyanine (PcCu) has been studied. The electrode materials used were Au, Ag, Cu, Al and SnO₂, In₂O₃. If the top and bottom electrodes are made of the same metal-Au, Ag, Ou, the dark currents are symmetric with respect to the change of polarity of the applied voltage to the electrodes, and the V-I characteristics are typical of the SOLO type. The system Al/PoOu/Al showed blocking contact, presumably due to the oxide layer present on the evaporated Al electrode. In the case of Al as the top electrode and SnO₂ or In₂O₃ layer on a glass substrate as the bottom electrode, SOLC was observed when Al was biased negative. However, when SnO₂ was biased negative, electrode limited current behavior was observed. When In₂O₃ was biased negative, a negative resistance effect was observed.