Anisotropic thermal conductivity of vertically self-ordered Nanocrystalline Boron Nitride thin films for thermal hotspot mitigation in electronics

Abstract

Thermal-crosstalk has become a prominent issue in modern electronic. Here, we present a new type of vertically-ordered Boron Nitride (voBN) thin films to address such limitation. voBN has a high anisotropic thermal conductivity with 16 times difference between through-plane and in-plane and can be deposited in room temperature. We studied the thermal properties with 3\omega method and verified with COMSOL Multiphysics simulations. Such characteristic would allow hotspot density to increase by 295%.