Thermal Diffusivity Of Diamond Films

Sacharia Albin; William P. Winfree; B. Scott Crews

doi:10.1117/12.962065

15 January 1989 Thermal Diffusivity Of Diamond Films

Sacharia Albin, William P. Winfree, B. Scott Crews

Proceedings Volume 1146, Diamond Optics II; (1989) https://doi.org/10.1117/12.962065
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

We have developed a laser pulse technique to measure the thermal diffusivity of diamond films deposited on a silicon substrate. The effective thermal diffusivity of diamond film on silicon was measured by observing the phase and amplitude of the cyclic thermal waves generated by the laser pulses. An analytical model is developed to calculate the effective in-plane (face-parallel) diffusivity of a two layer system. The model is used to reduce the effective thermal diffusivity of the diamond/silicon sample to a value for the thermal diffusivity and conductivity of the diamond film. Phase and amplitude measurements give similar results. The thermal conductivity of the films is found to be better than that of type la natural diamond.

Citation Download Citation

Sacharia Albin, William P. Winfree, and B. Scott Crews "Thermal Diffusivity Of Diamond Films", Proc. SPIE 1146, Diamond Optics II, (15 January 1989); https://doi.org/10.1117/12.962065

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