DETRAPPING CURRENT AND DISCRETE TRAPPING LEVELS OF γ-IRRADIATED POLYETHYLENE TEREPHTHALATE ELECTRETS
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DETRAPPING CURRENT AND DISCRETE TRAPPING LEVELS OF γ-IRRADIATED POLYETHYLENE TEREPHTHALATE ELECTRETS
Journal of Radiation Research and Radiation ProcessingVol. 11, Issue 2, Pages: 65-69(1993)
作者机构:
1.中国科学技术大学应用化学系,合肥 230026
2.青岛大学化学系,青岛 266071
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Zhang Xingyuan, Zhou Yiqin. DETRAPPING CURRENT AND DISCRETE TRAPPING LEVELS OF γ-IRRADIATED POLYETHYLENE TEREPHTHALATE ELECTRETS. [J]. Journal of Radiation Research and Radiation Processing 11(2):65-69(1993)
DOI:
Zhang Xingyuan, Zhou Yiqin. DETRAPPING CURRENT AND DISCRETE TRAPPING LEVELS OF γ-IRRADIATED POLYETHYLENE TEREPHTHALATE ELECTRETS. [J]. Journal of Radiation Research and Radiation Processing 11(2):65-69(1993)DOI:
DETRAPPING CURRENT AND DISCRETE TRAPPING LEVELS OF γ-IRRADIATED POLYETHYLENE TEREPHTHALATE ELECTRETS
γ-irradiation of a large dose (0.5—4 MGy) leads to the breaking of macromolecular chain and the rising of group density of phenyl with oxygen in(polyethylene terephthalate) (PET) films. The detrapping current of trapped charge carriers and the depth of trapping level of irradiated PET electrets increase with increasing irradiation dose. Due to the change of molecular structure, the kinds of structural defect rise resulting in increase of the number of discrete trapping levels(from two of amorphous to four of R-5).