类金刚石薄膜直流电导特性研究  

THE STUDY OF THE D.C. CONDUCTIVITY PROPERTIES OF DLC FILMS

作　　者：陈光华[1] 卢阳华[1] 马国斌[1] 

机构地区：[1]兰州大学物理系

出　　处：《物理学报》1996年第4期661-666,共6页Acta Physica Sinica

摘　　要：研究类金刚石薄膜的直流电导率随温度的变化.结果表明在110到650K范围内,导电机制分别在低温、室温和高温三个区域内具有明显的规律.在低温区电导率服从logσ-T^(-1/4)的线性关系;在室温区(中温区)和高温区电导率服从logσ-T^(-1)的线性关系,但具有不同的热激活能和指数前系数.文中应用两相模型,对这些实验结果作了说明.In this paper, we have studied the temperature dependence of the d. c. conductivity of DLC films. The results show that there are obviously different conductive mechanism in the three tempera ture regions (i.e., low, room and high). In the low temperature region , it agrees with the logσ-T-1/4 rule, while in the room and the high temperature regions, it agrees with the logσ-T -1rule, but the thermoactive energies and the pre-exponential coefficients are different. The experi-ment results are discussed using the two-phase model.

关 键 词：类金刚石 薄膜 直流电导性 

分 类 号：O484.42[理学—固体物理]