The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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Study on the Blocking Voltage and Leakage Current Characteristic Degradation of the Thyristor due to the Surface Charge in Passivation Material

표면 전하에 의한 Thyristor 소자의 차단전압 및 누설전류특성 연구

  • 김형우 (한국전기연구원 전력반도체연구그룹) ;
  • 서길수 (한국전기연구원 전력반도체연구그룹) ;
  • 방욱 (한국전기연구원) ;
  • 김기현 (한국전기연구원 전력반도체연구그룹) ;
  • 김남균 (한국전기연구원 전력반도체연구그룹)
  • Published : 2006.01.01
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Abstract

In high-voltage devices such as thyristor, beveling is mostly used junction termination method to reduce the surface electric field far below the bulk electric field and to expand the depletion region thus that breakdown occurs in the bulk of the device rather than at the surface. However, coating material used to protect the surface of the device contain so many charges which affect the electrical characteristics of the device. And device reliability is also affected by this charge. Therefore, it is needed to analyze the effect of surface charge on electrical characteristics of the device. In this paper, we analyzed the breakdown voltage and leakage current characteristics of the thyristor as a function of the amount of surface charge density. Two dimensional process simulator ATHENA and two-dimensional device simulator ATLAS is used to analyze the surface charge effects.

Keywords

References

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