Analysis of the electrically stimulated acoustic-wave method for observing space charge in semi-insulating films.
Analysis of the electrically stimulated acoustic-wave method for observing space charge in semi-insulating films.
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电刺激声波法观察半绝缘薄膜空间电荷的分析。
DOI：
10.1103/physrevb.44.10804
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
Bernstein
中科院分区：
文献类型：
--
作者：
Bernstein
用于观察介电绝缘体中驻留空间电荷的电刺激声波 (ESAW) 方法已用于表征毫米厚的聚合物绝缘体样品的极化行为。其原理包括在含有空间电荷的材料上施加电压脉冲，并通过压电传感器记录现有的应力波信号。这是一种非侵入性技术，可以在任何空间电荷生成实验期间原位进行。该方法能够检测空间电荷，其品质因数等于灵敏度乘以分辨率 130 pC/${\mathrm{cm}}^{2}$，并且据我们所知，这是所有非破坏性空间电荷分析技术中报道的最低值。
The electrically stimulated acoustic-wave (ESAW) method for observing resident space charge in dielectric insulators has been used to characterize the poling behavior of millimeter-thick samples of polymeric insulation. The principle involves applying a voltage pulse across a material containing space charge and recording the exiting stress-wave signal by means of a piezoelectric transducer. This is a noninvasive technique and may be performed, in situ, during any space-charge-generating experiment. This method is able to detect space charge with a figure of merit equal to the sensitivity times the resolution of 130 pC/${\mathrm{cm}}^{2}$, and, to our knowledge, is the lowest reported for any nondestructive space-charge-profiling technique.