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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
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The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
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Diamond for Electronics: Materials, Processing and Devices.

Daniel Araujo1, Mariko Suzuki1, Fernando Lloret2

  • 1Department of Materials Science and Engineering, University of Cádiz, 11510 Puerto Real, Spain.

Materials (Basel, Switzerland)
|November 27, 2021
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Summary

Diamond exhibits superior properties for power electronic devices, but technological challenges hinder its adoption. This review covers diamond crystal growth, fabrication, and device performance compared to other wide bandgap materials.

Keywords:
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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Solid-State Physics

Background:

  • Wide bandgap (WBG) materials are crucial for advanced power electronic devices.
  • Diamond possesses exceptional properties like high breakdown voltage and thermal conductivity, surpassing other WBG materials.
  • Despite its potential, diamond device technology faces significant hurdles due to material hardness and substrate size limitations.

Purpose of the Study:

  • To provide a comprehensive overview of diamond technology for power electronics.
  • To highlight key scientific and technological challenges in diamond device fabrication.
  • To compare diamond-based devices with other WBG semiconductor devices.

Main Methods:

  • Review of scientific literature on diamond crystal growth and characterization.
  • Analysis of fabrication processes and surface state importance.
  • Comparative study of diamond device performance against other WBG materials.

Main Results:

  • Diamond offers superior intrinsic properties for power electronics, indicated by its high Baliga's figure of merit.
  • Significant advancements in crystal growth and fabrication techniques are being made.
  • Surface states critically influence device performance and require careful management.

Conclusions:

  • Diamond remains a highly promising material for next-generation power electronics.
  • Overcoming fabrication challenges is key to realizing diamond's full potential.
  • Further research is needed to establish diamond as a mainstream WBG power device material.