Dielectric constant of diamond

Electrical and Electronic. Diamond is an electrical insulator (-- lO H/cm) unless doped with boron when it becomes ap-ty e semiconductor with a resistivity in the range of 10 to 100 Q/cm. n-Ty e doping has often been claimed but is less certainly estabUshed. The dielectric constant of diamond is 5.58. 

The dielectric constant of diamond (5.7) is low compared to that of other semiconductors such as silicon or germanium but not as low as most organic polymers (in the 2 to 4 range) or glasses (approximately 4). 

Applications of diamond substrates include heat sinks for laser diodes and laser diode arrays. The low dielectric constant of diamond coupled with its high thermal conductivity makes it attractive for microwave circuits as well. As improved methods of fabrication lower the cost, the use of diamond substrates is expected to expand rapidly. 

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See also in sourсe #XX -- [ ]

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