Enhanced Dielectric Properties of Ferroelectric Polymer Composites Induced by Metal-Semiconductor Zn-ZnO Core-Shell Structure
Enhanced Dielectric Properties of Ferroelectric Polymer Composites Induced by Metal-Semiconductor Zn-ZnO Core-Shell Structure
复制标题
金属-半导体Zn-ZnO核壳结构增强铁电聚合物复合材料的介电性能
DOI：
10.1021/am2016156
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发表时间：
2012-01-01
影响因子：
9.5
通讯作者：
Bai, Jinbo
中科院分区：
文献类型：
--
作者：
Zhang, Ye;Wang, Yao;Bai, Jinbo
研究了金属半导体Zn-ZnO核壳结构对聚偏氟乙烯（PVDF）复合材料介电性能的影响。将生锌颗粒在空气中热处理，得到锌氧化锌填料。Zn-ZnO/PVDF复合材料介电常数的提高是由金属-半导体界面和半导体-绝缘体界面引起的双极性引起的。由于在锌金属芯和绝缘体PVDF基体之间存在ZnO半导体壳层，因此介质损耗仍然很低。此外，通过调整半导体壳层厚度可以进一步优化复合材料的介电性能。
The effect of metal-semiconductor Zn-ZnO core-shell structure on dielectric properties of polyvinylidene fluoride (PVDF) composites was investigated. Zn-ZnO fillers were obtained by the heat-treatment of raw Zn particles under air. The enhanced dielectric constant of Zn-ZnO/PVDF composites results from the duplex interfacial polarizations induced by metal-semiconductor interface and semiconductor-insulator interface. The dielectric loss is still low because of the presence of ZnO semiconductor shell between Zn metal core and insulator PVDF matrix. Furthermore, the dielectric performance of as-prepared composites could be further optimized through adjusting the thickness of semiconductor shell.