Electrical Conductivity of Tetrapod-Shaped ZnO Whiskers
Electrical Conductivity of Tetrapod-Shaped ZnO Whiskers
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DOI：
10.1143/jjap.32.4377
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发表时间：
1993-09
影响因子：
1.5
通讯作者：
M. Oku
中科院分区：
文献类型：
--
作者：
M. Oku
测定了四足形ZnO晶须在不同大气条件下的电导率。压缩晶须粉末的视电阻率为104~108 Ωcm。电导率在很大程度上取决于压缩压力、电场强度和大气。用一对平行平面电极对晶须进行电流电压测量，观察到整流效应。精流的主要原因是由于氧在晶体表面的化学吸附而在晶体表面附近形成损耗层。
The electrical conductivity of tetrapod-shaped ZnO whiskers was measured under different atmospheric conditions. Apparent resistivity of 104~108 Ωcm was obtained in the form of the compressed whisker powder. The conductivity was found to depend strongly on the compressive pressure, the electrical field strength and the atmosphere. The rectification effect was observed in current-voltage measurements of the whiskers using a pair of parallel-plane electrodes for powder material. The rectification was interpreted to be mainly caused by the depletion layer formed near the crystal surface due to the oxygen chemisorption on the crystal surface.