摘要
采用电致发光测量方法对聚丙烯薄膜在均匀直流电场作用下的发光变化进行了研究,分析了聚丙烯薄膜在高电场作用下的发光特性和电场对发光的影响。研究结果表明:聚丙烯的发光量随电场而增大,场强越大,从两极注入的载流子获得的动能越大,越容易与发光中心发生碰撞,将能量转化为激发过程。在3.9MV/cm以下,发光量随时间变化不大,在4.0 MV/cm时,发光量陡增,发生预击穿。
In this paper, luminescence of polypropylene films under dc electric field is studied by using the electroluminescence measuring experiments. The luminescence characteristic under high electric field of polymer films, and the effect of electric field on luminescence are investigated. Experimental resuits show that the luminescence intensity of polypropylene films increase along with the electric field and higher the electric field is, the higher the kinetic energy of charge carriers injected from the two electrodes are and the easier the collision of charge carriers with luminescence center become, turning energy into the excitation process. Under 3.9 MV/cm, the luminescence intensity hardly change, until 4.0 MV/ cm,while luminescence intensity increase so acutely that prebreakdown phenomenon occurs.
出处
《黑龙江科技学院学报》
CAS
2006年第1期45-47,共3页
Journal of Heilongjiang Institute of Science and Technology
关键词
聚丙烯
薄膜
老化
击穿
polypropylene
films
wear-out
breakdown
