Ultraviolet-induced discharge currents and reduction of the piezoelectric coefficient in cellular polypropylene films

被引：37

作者：

Mellinger, A ^{[1
]}

González, FC ^{[1
]}

Gerhard-Multhaupt, R ^{[1
]}

机构：

[1] Univ Potsdam, Dept Phys, D-14469 Potsdam, Germany

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 02期

关键词：

D O I：

10.1063/1.1537051

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Photostimulated discharge spectroscopy of cellular polypropylene films between 200 and 400 nm showed the existence of at least three distinct trapping levels at 4.6, 5.6, and 6.3 eV. The effects of UV irradiation on the piezoelectric d(33) coefficient was studied by monitoring thickness-extension resonances in the dielectric spectrum. Prolonged irradiation at wavelengths below 210 nm led to a reduction of the piezoelectric coefficient, caused by partial discharge of the polymer foam. (C) 2003 American Institute of Physics.

引用

页码：254 / 256

页数：3

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