| Review of the thermally stimulated depolarization current (TSDC) technique for characterizing dielectric materials |
| Hyunseok Song1, J. Pundareekam Goud1, Jiwon Ye1, Wonsik Jung2, Jaehoon Ji2, Jungho Ryu1,3 |
1School of Materials Science and Engineering , Yeungnam University , Gyeongsan 38541 , Korea
2Corporate R&D Institute, Samsung Electro-Mechanics , Suwon 16674 , Korea
3Institute of Materials Technology , Yeungnam University , Gyeongsan 38541 , Korea |
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Received: February 15, 2023; Revised: March 30, 2023 Accepted: April 5, 2023. Published online: April 18, 2023.
*Hyunseok Song and J. Pundareekam Goud contributed equally to this work. |
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| ABSTRACT |
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Atomic defects, particularly oxygen vacancies, aff ect the charge transport mechanisms and DC resistance changes in dielectric materials; therefore, their concentrations and distributions are crucial for understanding the electrical property deterioration of materials. The thermally stimulated depolarization current (TSDC) technique has been introduced to investigate the behavior and characteristics of atomic defects in dielectric materials, which is one of the best and most widely used methods among various techniques. The relaxation type including dipoles, trap charges, and mobile ions, and the concentration of defects in dielectrics can be determined through information such as maximum temperature ( Tm ), and maximum current density ( Jm ) from each peak in the TSDC results and activation energy ( Em ) calculated from the slope. In this review, an overview of the TSDC technique, including fundamental theory, characterizing procedures such as poling processes and current measurement during depolarization, an analytical method according to the variables, and applications to various dielectric systems, is presented. |
| Key words:
Thermally stimulated depolarization current · Defect relaxation · Dielectric · Activation energy · Dopant |
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