Wide bandgap semiconductor -- why higher temperature tolerance?

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SUMMARY

Wide bandgap semiconductors exhibit higher temperature tolerance due to their larger bandgaps, which make it more difficult for electrons to be thermally excited from the valence band to the conduction band. This characteristic allows these materials to operate effectively at elevated temperatures without significant performance degradation. Consequently, the ability to withstand higher temperatures correlates with the potential for achieving higher operational frequencies. The discussion highlights the relationship between thermal properties and frequency capabilities in wide bandgap materials compared to traditional silicon semiconductors.

PREREQUISITES
  • Understanding of semiconductor physics
  • Knowledge of bandgap energy concepts
  • Familiarity with thermal properties of materials
  • Basic grasp of frequency modulation in electronic devices
NEXT STEPS
  • Research the thermal properties of wide bandgap semiconductors like Gallium Nitride (GaN) and Silicon Carbide (SiC)
  • Study the relationship between bandgap energy and electron mobility in semiconductors
  • Learn about the impact of temperature on the performance of electronic devices
  • Explore frequency tuning techniques in high-temperature semiconductor applications
USEFUL FOR

Electrical engineers, semiconductor researchers, and professionals involved in high-temperature electronics design will benefit from this discussion.

ceeeejay
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I was wondering if anyone knows the relationship with temperature and frequency tuning in wide bandgap semiconductors. I just want to know why wider bandgaps have higher temperature tolerance and why does that mean high frequencies can be achieved? Explanation with formulas would be great!
 
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I don't know any formulas offhand but I can tell you that if the bandgap is larger, then it is harder to thermally excite electrons from the valence band to the conduction band. I don't know how that relates to frequencies though.
 
gckaufman said:
I don't know any formulas offhand but I can tell you that if the bandgap is larger, then it is harder to thermally excite electrons from the valence band to the conduction band. I don't know how that relates to frequencies though.
well silicon are currently used in most integrated devices due to its high thermal properties. i was wondering if the thermal coefficient of semiconductors were higher than that of silicon would that mean it would be able to achieve higher frequencies due to its wider bandgap?
 

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