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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xiaobing Dong Yi Yin Zhe Li Xuguang Li |
| Copyright Year | 2007 |
| Description | Author affiliation: Dept. of Electr. Eng., Shanghai Jiao Tong Univ., Shanghai (Xiaobing Dong; Yi Yin; Zhe Li; Xuguang Li) |
| Abstract | $Nano-SiO_{x}$ and $micro-SiO_{2}$ particles were homogeneously dispersed in low-density polyethylene with a method of double-solution mixture. Both kinds of the composites were sputtered with Au and Ag on both surfaces as electrodes, respectively. Space charge in the composites was investigated with pulsed electro-acoustic method (PEA). It is shown that space charge distribution in the sample with different metal electrode pairs relates with the electrode polarity. The amount of hetero-polarity space charge in pure LDPE after being electrically prestressed with Au (+)~Ag(-) electrode pair is greater than that with Au $(-)_{~}Ag(+)$ electrode pair. However, homo-polarity space charge appears in the microcomposite after being electrically prestressed with either Au $(+)_{~}Ag$ (-) or Au $(-)_{~}Ag$ (+) electrode pair, and the amount of space charge increases with $micro-SiO_{2}$ content. It also could be seen that the amount of homo-polarity space charge in the microcomposite with $Au(-)_{~}Ag(+)$ electrode pair is greater than that with $Au(+)_{~}Ag(-)$ electrode pair. With electrically prestressing, hetero-polarity space charge appears in the nanocomposite with either Au $(+)_{~}Ag(-)or$ $Au(-)_{~}Ag(+)$ electrode pair and the amount of space charge increases with $nano-SiO_{x}$ content. In addition, the amount of space charge in the nanocomposite with Au $(-)_{~}Ag(+)$ electrode pair is lower than that with $Au(+)_{~}Ag(-)$ electrode pair. The space charge distribution difference in all samples with different electrode pairs has close relation to electron and (or) hole injection efficiency of different electrode material, as well as charge trapping and detrapping process in the interfaces of the samples. |
| Starting Page | 377 |
| Ending Page | 380 |
| File Size | 1519042 |
| Page Count | 4 |
| File Format | |
| ISBN | 1424407508 |
| DOI | 10.1109/ICSD.2007.4290831 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-07-08 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Polyethylene Space charge Electrodes Gold Pulsed electroacoustic methods Dielectric materials Polymers Current measurement Charge measurement Charge carrier processes |
| Content Type | Text |
| Resource Type | Article |
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