聚N-乙烯基咔唑-2,4,7三硝基芴酮电荷转移复合物的暗导(Ⅱ)

• 作 者: 钱人元 万梅香 英新芳 陈尚贤
• 机 构: 中国科学院化学研究所,中国科学院化学研究所,中国科学院化学研究所,中国科学院化学研究所 北京,北京,北京,北京
• 出 处: 科学通报
• 发表日期: 1982年17期
• 关键词: 三硝基芴酮 电荷转移复合物 伏-安特性 Schottky 银电极 烯基 线性关系 金电极 金属电极 界面效应

前文已报道聚N-乙烯基咔唑(PVCz)-2,4,7三硝基芴酮(TNF)(1:0.5)电荷转移复合物的暗导,其伏-安特性的非欧姆部分电导的对数与V~(1/2)成线性关系,但其斜率与Schottky或Poole-Frenkd效应的计算值均有偏差。为了更好地判断暗导的非欧姆性是来自界面效应还是来自体效应。作者改用对称的金属电极夹心池进行暗导伏-安特性测定,采用电子逸出功不同的金属电极,如金电极(逸出功5.leV),铜电极(4.7),银电极(4.3),所得结果如图1所

It has been previously reported that the dark conductance of the charge-transfer complex of poly (N-vinylcarbazole) -2,4,7 trinitrofluorenone (TNF) (1: 0.5), the non-ohmic partial conductance of its volt- Has a linear relationship with V ~ (1/2), but its slope deviates from the calculated value of Schottky or Poole-Frenkd effect. In order to better determine whether the non-ohmic dark led by the interface effect or from the body effect. The authors use a symmetrical metal electrode sandwich cell for the dark lead-amperometric determination using a metal electrode with different work functions of the electrons, such as a gold electrode (work function 5.leV), a copper electrode (4.7), a silver electrode ), The results shown in Figure 1