电晕极化PVDF薄膜中补偿电荷的捕获
Trapping of Compensating Charges in Corona Poled PVDF Films
摘要：
为电晕极化PVDF薄膜的极化与空间电荷的密切关系提供了实验依据。结果表明，去极化场是由宏观过渡区中捕获的电荷补偿的，通过该过渡区，体积的极化部分与非极化部分分离。补偿电荷要么注入体中，要么由于热发射而在内部产生，然后在微晶中形成铁电极化时被捕获。
英文摘要：
Experimental evidence is provided on close relation between polarization and space charge in corona poled PVDF films. It is shown that the depolarizing field is compensated by charges trapped in macroscopic transition zones, by which polarized parts of the volume are separated from non-polarized ones. The compensating charges are either injected in the bulk, or created inside due to the thermal emission and then trapped when the ferroelectric polarization in crystallites is formed.
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