INVESTIGATION OF SPACE CHARGE TRAP LEVELS IN Al2O3 NANO-POWDER DOPED POLYETHYLENE BY PHOTO-STIMULATED DISCHARGE METHOD
INVESTIGATION OF SPACE CHARGE TRAP LEVELS IN Al2O3 NANO-POWDER DOPED POLYETHYLENE BY PHOTO-STIMULATED DISCHARGE METHOD
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DOI：
10.1142/s0217979212501408
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发表时间：
2012-09
影响因子：
1.7
通讯作者：
Zhien Zhu;Yewen Zhang;Z. An;F. Zheng
中科院分区：
文献类型：
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作者：
Zhien Zhu;Yewen Zhang;Z. An;F. Zheng
采用PSD技术研究了不同Al2O3含量的Al2O3纳米粉体掺杂LDPE的陷阱能级。连续扫描法可以通过PSD谱定性估计掺杂LDPE中陷阱深度的变化，步进扫描法可以定量描述样品中陷阱能级的分布。结果表明，Al2O3纳米粉体掺杂量大于0.1 wt%，可以明显加深LDPE的陷阱能级。根据纳米粉体掺杂对空间电荷注入影响的相关报道，认为空间电荷的抑制可能与Al2O3纳米粉体掺杂LDPE中更深的陷阱能级有关。
The trap levels of Al2O3 nano-powder doped LDPE with different Al2O3 contents are investigated by PSD technique. The variation of trap depth in the doped LDPE can be qualitatively estimated by PSD spectra in continuous scanning method, and the distribution of trap levels in the samples can be quantitatively described in step scanning method. It is indicated that the trap levels of LDPE can be evidently deepened by Al2O3 nano-powder doping with the content more than 0.1 wt%. According to the relative reports on the effect of nano-powder doping to space charge injection, it is considered that the suppression of space charge is probably correlated to the deeper trap levels in Al2O3 nano-powder doped LDPE.