| 用光刺激放电法研究纳米粉末掺杂低密度聚乙烯中陷阱能级 |
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| 引用本文： | 朱智恩,张冶文,安振连,郑飞虎.用光刺激放电法研究纳米粉末掺杂低密度聚乙烯中陷阱能级[J].物理学报,2012,61(6):67701-067701. |
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| 作者姓名： | 朱智恩 张冶文 安振连 郑飞虎 |
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| 作者单位： | 同济大学物理系, 先进微结构材料教育部重点实验室, 上海 200092;同济大学物理系, 先进微结构材料教育部重点实验室, 上海 200092;同济大学物理系, 先进微结构材料教育部重点实验室, 上海 200092;同济大学物理系, 先进微结构材料教育部重点实验室, 上海 200092 |
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| 基金项目： | 国家自然科学基金(批准号: 51077101, 50807040)和 国家重点基础研究发展计划 (批准号: 2009CB724505)资助的课题. |
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| 摘 要： | 通过光刺激放电(PSD)技术研究了纳米粉末掺杂低密度聚乙烯(LDPE)中的陷阱能级.利用连续扫描法得到了不同掺杂比例的Al2O3,MgO纳米粉末掺杂试样以及相同掺杂比例的多种纳米粉末掺杂试样的PSD电流谱,定性地得出了试样陷阱能级的深浅变化.分步扫描法定量地描述了LDPE试样在Al2O3纳米掺杂前后陷阱能量分布的变化.结果表明,掺杂比例大于0.2%的Al2O3纳米粉末掺杂、大于0.5%的MgO纳米粉末掺杂能够显著地使得LDPE陷阱能级变深.结合纳米掺杂对LDPE空间电荷注入影响的相关报道,可推测纳米掺杂对空间电荷注入的抑制与试样中陷阱能级变深存在密切的关联.
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| 关 键 词： | 低密度聚乙烯 纳米粉末掺杂 陷阱能级 光刺激放电 |
| 收稿时间： | 2011-07-13 |
| 修稿时间： | 8/1/2011 12:00:00 AM |
Trap levels in low density polyethylene doped with nanoparticles by photo-stimulated discharge |
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| Zhu Zhi-En,Zhang Ye-Wen,An Zhen-Lian and Zheng Fei-Hu.Trap levels in low density polyethylene doped with nanoparticles by photo-stimulated discharge[J].Acta Physica Sinica,2012,61(6):67701-067701. |
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| Authors: | Zhu Zhi-En Zhang Ye-Wen An Zhen-Lian and Zheng Fei-Hu |
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| Institution: | MOE Key Laboratory of Advanced Micro-structure Material, Department of Physics, Tongji University, Shanghai 200092, China;MOE Key Laboratory of Advanced Micro-structure Material, Department of Physics, Tongji University, Shanghai 200092, China;MOE Key Laboratory of Advanced Micro-structure Material, Department of Physics, Tongji University, Shanghai 200092, China;MOE Key Laboratory of Advanced Micro-structure Material, Department of Physics, Tongji University, Shanghai 200092, China |
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| Abstract: | Trap levels in nanoparticle doped low density polyethylene (LDPE) are investigated by photo-stimulated discharge (PSD). The PSD spectra in MgO/LDPE and Al2O3/LDPE nanocomposites with the different mass percentages and different nanocomposites with the same mass percentage are obtained by continuous scanning mode, which can be qualitatively estimate the trap energy distribution. The trap levels in Al2O3/LDPE nanocomposite are quantitatively described by step scanning mode. The experimental results indicate that the trap levels in Al2O3/LDPE nanocomposites with the Al2O3 content of more than 0.2% and MgO/LDPE nanocomposites with the MgO content of more than 0.5% are deeper than those of the virgin LDPE. According to the relevant reports on the effect of nanoparticle doping on space charge injection, it is considered that the suppression of space charge is probably correlated with the deeper trap levels in nanocomposites. |
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| Keywords: | low density polyethylene nano-powder doping trap levels photo-stimulated discharge |
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