Carrier mobility in ethylene-vinylacetate copolymer estimated by transient space charge
Carrier mobility in ethylene-vinylacetate copolymer estimated by transient space charge
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通过瞬态空间电荷估计乙烯-醋酸乙烯酯共聚物中的载流子迁移率
DOI：
10.1109/94.959717
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发表时间：
2001
影响因子：
3.1
通讯作者：
Yewen Zhang
中科院分区：
文献类型：
--
作者：
N. Hozumi;Y. Muramoto;M. Nagao;Yewen Zhang
用一种新的方法测量了乙烯-醋酸乙烯酯共聚物（伊娃）薄膜中载流子的迁移率。当脉冲电压叠加在直流偏置电压上时，通过脉冲电声法监测随时间变化的电荷分布。在脉冲施加后不久，正电荷包从阳极注入，并向阴极移动。从电荷包的运动可以看出，在室温下，正载流子在10 ~ 60 MV/m的迁移率为10/sup-13/ m/sup 2//Vs。当脉冲电压很高时，在体块内出现电荷包，表明发生了载流子解离。
Carrier mobility in an ethylene vinyl acetate (EVA) copolymer film was measured by a new technique. The time-dependent charge distribution was monitored by the pulsed-electroacoustic method when a pulse voltage was superposed on a dc bias voltage. A positive charge packet was injected from the anode soon after the pulse application, and moved towards the cathode. It was suggested from the movement of the charge packet that the mobility of the positive carrier at 10 to 60 MV/m was in the order of 10/sup -13/ m/sup 2//Vs at room temperature. When the pulse voltage was very high, a charge packet appeared within the bulk, suggesting that carrier dissociation takes place.