A study on the analysis of carrier properties and trap energy depth in the low-density polythylene electrets

저밀도 폴리에틸렌 일렉트렉트에 있어서 케리어의 성질과 Trap 깊이 해석에 대한 연구

The thermostimulated discharge currents of low-density polyethylene electrets were measured versus the principal experimental variables. Several electrode types were used for the charging and discharging procedures. The results led to know the experimental conditions for the heterocharge and homocharge accumulating and decreasing. The electronic structure parameters of polyethylene such as trap level, density of traps, hopping length, mobility, trap time constants were deduced. A method for evaluating the local electric field inside the electret is proposed.