低密度聚乙烯的导电性

Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics Pub Date : 1989-07-03 DOI:10.1109/ICSD.1989.69204

G. Chen, H. M. Banford, R. Fouracre, D. Tedford

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引用次数: 14

摘要

研究了无添加剂低密度聚乙烯(LDPE)在稳态、瞬态电流和热激放电电流下的电荷输运特性。瞬态电流表现为空间电荷限制电流(SCLC)。从瞬态SCLC曲线计算的载流子迁移率与其他测量结果一致，并且发现随施加电压的平方而增加。等时测量的log I和log V图显示一条梯度为3的直线。这似乎表明一个SCLC进程。TSDC和瞬态放电电流结果表明，LDPE中可能发生双注入，这可能影响载流子迁移率随外加电压的变化，并在高场下以log I和log V曲线的曲率为特征

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Electrical conduction in low-density polyethylene

Charge transport in additive-free low-density polyethylene (LDPE) was investigated by examining the behavior of both steady-state and transient currents as well as thermally stimulated discharge currents (TSDCs). The transient current behavior indicated space-charge-limited current (SCLC). The carrier mobility calculated from the transient SCLC curves was in agreement with other measurements and was found to increase with the square of the applied voltage. log I versus log V plots of isochronal measurements showed a straight line of gradient 3. This would appear to indicate an SCLC process. TSDC and transient discharge current results revealed that double injection can occur in LDPE, which could influence the variation of carrier mobility with applied voltage and would be characterized by curvature in the log I versus log V plots at high fields.<>

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Proceedings of the 3rd International Conference on Conduction and Breakdown in Solid Dielectrics

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