Volume 37 Issue 12
Dec.  2012
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Lü Weimin, Hu Dong, Xie Jinsong, et al. Experiments of aluminum migration of power silicon transistor using planar process[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(12): 1515-1518. (in Chinese)
Citation: Lü Weimin, Hu Dong, Xie Jinsong, et al. Experiments of aluminum migration of power silicon transistor using planar process[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(12): 1515-1518. (in Chinese)

Experiments of aluminum migration of power silicon transistor using planar process

  • Received Date: 26 Oct 2010
  • Publish Date: 30 Dec 2012
  • Experiments have been carried out on to study a phenomenon of aluminum migration across a 50 micron semi-insulation gap on the die surface of a power silicon transistor under a high-intensity electric field, which is manufactured using a typical planar process with aluminum as the metallization material. After physical observation and analysis by opening cap, testing at low temperature and validation by drying and analysis and comparison of composition in the migration, the chemical composition of the substances involved in the migration process was verified. Then the correlation between the migration process and environmental conditions of temperature and humidity, contaminants on the die surface as well as local structure of transistor were identified respectively. Based on the experiment results obtained in this study, a hypothesis was made on the mechanism of this migration phenomenon. The analysis provides direction for verification and quantization of the migration mechanism under different induced conditions.

     

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