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A new method for direct determination of trap level distribution from TSC measurement

  • Fuqiang Tian
  • , Wenbin Bu
  • , Chun Yang
  • , Lijuan He
  • , Yi Wang
  • , Xuan Wang
  • , Qingquan Lei
  • Beijing Jiaotong University
  • Harbin University of Science and Technology
  • Shanghai Jiao Tong University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

14 Scopus citations

Abstract

Thermally stimulated current (TSC) is developed and a new method for direct determination of trap level distribution in polymer film is proposed. In this method, a new function is defined to weight the contribution of a trap level to the current at any temperature. The demarcation energy is used to study the trap empty process. Analysis shows that only electrons with trap levels very close to the demarcation energy significantly contribute to the external circuit. Based on this method, the trap level distribution of polyimide is investigated. Experiments found that a broad peak appeared at about 440K on TSC spectrum. The trap level distribution exhibits a density peak at about 1.35eV. This is in accordance with the theoretical analysis by the proposed method which shows that only electrons with trap levels close to 1.3eV contribute to the current at 440K around.

Original languageEnglish
Title of host publication2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
Pages980-983
Number of pages4
DOIs
StatePublished - 2009
Externally publishedYes
Event2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009 - Harbin, China
Duration: 19 Jul 200923 Jul 2009

Publication series

NameProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials

Conference

Conference2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
Country/TerritoryChina
CityHarbin
Period19/07/0923/07/09

Keywords

  • Demarcation energy
  • TSC
  • Trap level distribution

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