ELECTRIC-FIELD DISTRIBUTION AND NEAR-SURFACE MODIFICATIONS IN SODA LIME GLASS SUBMITTED TO A DC POTENTIAL
ELECTRIC-FIELD DISTRIBUTION AND NEAR-SURFACE MODIFICATIONS IN SODA LIME GLASS SUBMITTED TO A DC POTENTIAL
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DOI：
10.1016/0022-3093(93)90224-l
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发表时间：
1993-07-01
影响因子：
3.5
通讯作者：
ACHETE, CA
中科院分区：
文献类型：
--
作者：
LEPIENSKI, CM;GIACOMETTI, JA;ACHETE, CA
采用激光诱导压力脉冲法（LIPP）研究了施加直流电位（直流极化）后钠石灰玻璃样品中的电场分布。采用卢瑟福后向散射光谱（RBS）、弹性反冲检测分析（ERD）和核反应分析三种近表面分析方法，确定了直流极化过程对近表面成分的影响。在阳极附近形成缺碱层。这个耗尽层在直流极点后持续很长时间。该区域的电场是本征介电击穿的量级，其结构取决于氢的穿透与否。在此基础上，讨论了失碱层的导电机理。这表明，当使用氢阻断电极时，电离电子可能是碱耗尽层中的电荷载流子。
The laser-induced pressure pulse method (LIPP) is employed to investigate the electric field distribution in soda-lime glass samples after application of a dc potential (dc poling). The modifications of near-surface composition resulting from the dc polarization procedure were determined by means of three nuclear techniques for near-surface analysis: Rutherford backscattering spectrometry (RBS), elastic recoil detection analysis (ERD) and nuclear reaction analysis. An alkali-depleted layer is formed near the anode. This depletion layer persists for a long time after the dc poling. The electric field in this region is of the order of the intrinsic dielectric breakdown, and its configuration depends on the penetration, or not, of hydrogen. Based on these results, the conduction mechanism in the alkali-depleted layer is discussed. It is suggested that when hydrogen blocking electrodes are used ionized electrons are probably the charge carriers in the alkali-depleted layer.